diff options
Diffstat (limited to 'fs')
112 files changed, 2206 insertions, 1815 deletions
diff --git a/fs/9p/fid.c b/fs/9p/fid.c index 0ee594569dcc..85b67ffa2a43 100644 --- a/fs/9p/fid.c +++ b/fs/9p/fid.c @@ -286,11 +286,9 @@ static struct p9_fid *v9fs_fid_clone_with_uid(struct dentry *dentry, uid_t uid) struct p9_fid *v9fs_writeback_fid(struct dentry *dentry) { - int err, flags; + int err; struct p9_fid *fid; - struct v9fs_session_info *v9ses; - v9ses = v9fs_dentry2v9ses(dentry); fid = v9fs_fid_clone_with_uid(dentry, 0); if (IS_ERR(fid)) goto error_out; @@ -299,17 +297,8 @@ struct p9_fid *v9fs_writeback_fid(struct dentry *dentry) * dirty pages. We always request for the open fid in read-write * mode so that a partial page write which result in page * read can work. - * - * we don't have a tsyncfs operation for older version - * of protocol. So make sure the write back fid is - * opened in O_SYNC mode. */ - if (!v9fs_proto_dotl(v9ses)) - flags = O_RDWR | O_SYNC; - else - flags = O_RDWR; - - err = p9_client_open(fid, flags); + err = p9_client_open(fid, O_RDWR); if (err < 0) { p9_client_clunk(fid); fid = ERR_PTR(err); diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h index 9665c2b840e6..e5ebedfc5ed8 100644 --- a/fs/9p/v9fs.h +++ b/fs/9p/v9fs.h @@ -116,7 +116,6 @@ struct v9fs_session_info { struct list_head slist; /* list of sessions registered with v9fs */ struct backing_dev_info bdi; struct rw_semaphore rename_sem; - struct p9_fid *root_fid; /* Used for file system sync */ }; /* cache_validity flags */ diff --git a/fs/9p/vfs_dentry.c b/fs/9p/vfs_dentry.c index b6a3b9f7fe4d..e022890c6f40 100644 --- a/fs/9p/vfs_dentry.c +++ b/fs/9p/vfs_dentry.c @@ -126,7 +126,9 @@ static int v9fs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd) retval = v9fs_refresh_inode_dotl(fid, inode); else retval = v9fs_refresh_inode(fid, inode); - if (retval <= 0) + if (retval == -ENOENT) + return 0; + if (retval < 0) return retval; } out_valid: diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index ffbb113d5f33..82a7c38ddad0 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -811,7 +811,7 @@ v9fs_vfs_follow_link_dotl(struct dentry *dentry, struct nameidata *nd) fid = v9fs_fid_lookup(dentry); if (IS_ERR(fid)) { __putname(link); - link = ERR_PTR(PTR_ERR(fid)); + link = ERR_CAST(fid); goto ndset; } retval = p9_client_readlink(fid, &target); diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c index f3eed3383e4f..feef6cdc1fd2 100644 --- a/fs/9p/vfs_super.c +++ b/fs/9p/vfs_super.c @@ -154,6 +154,7 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags, retval = PTR_ERR(inode); goto release_sb; } + root = d_alloc_root(inode); if (!root) { iput(inode); @@ -185,21 +186,10 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags, p9stat_free(st); kfree(st); } - v9fs_fid_add(root, fid); retval = v9fs_get_acl(inode, fid); if (retval) goto release_sb; - /* - * Add the root fid to session info. This is used - * for file system sync. We want a cloned fid here - * so that we can do a sync_filesystem after a - * shrink_dcache_for_umount - */ - v9ses->root_fid = v9fs_fid_clone(root); - if (IS_ERR(v9ses->root_fid)) { - retval = PTR_ERR(v9ses->root_fid); - goto release_sb; - } + v9fs_fid_add(root, fid); P9_DPRINTK(P9_DEBUG_VFS, " simple set mount, return 0\n"); return dget(sb->s_root); @@ -210,11 +200,15 @@ close_session: v9fs_session_close(v9ses); kfree(v9ses); return ERR_PTR(retval); + release_sb: /* - * we will do the session_close and root dentry - * release in the below call. + * we will do the session_close and root dentry release + * in the below call. But we need to clunk fid, because we haven't + * attached the fid to dentry so it won't get clunked + * automatically. */ + p9_client_clunk(fid); deactivate_locked_super(sb); return ERR_PTR(retval); } @@ -232,7 +226,7 @@ static void v9fs_kill_super(struct super_block *s) P9_DPRINTK(P9_DEBUG_VFS, " %p\n", s); kill_anon_super(s); - p9_client_clunk(v9ses->root_fid); + v9fs_session_cancel(v9ses); v9fs_session_close(v9ses); kfree(v9ses); @@ -285,14 +279,6 @@ done: return res; } -static int v9fs_sync_fs(struct super_block *sb, int wait) -{ - struct v9fs_session_info *v9ses = sb->s_fs_info; - - P9_DPRINTK(P9_DEBUG_VFS, "v9fs_sync_fs: super_block %p\n", sb); - return p9_client_sync_fs(v9ses->root_fid); -} - static int v9fs_drop_inode(struct inode *inode) { struct v9fs_session_info *v9ses; @@ -307,6 +293,51 @@ static int v9fs_drop_inode(struct inode *inode) return 1; } +static int v9fs_write_inode(struct inode *inode, + struct writeback_control *wbc) +{ + int ret; + struct p9_wstat wstat; + struct v9fs_inode *v9inode; + /* + * send an fsync request to server irrespective of + * wbc->sync_mode. + */ + P9_DPRINTK(P9_DEBUG_VFS, "%s: inode %p\n", __func__, inode); + v9inode = V9FS_I(inode); + if (!v9inode->writeback_fid) + return 0; + v9fs_blank_wstat(&wstat); + + ret = p9_client_wstat(v9inode->writeback_fid, &wstat); + if (ret < 0) { + __mark_inode_dirty(inode, I_DIRTY_DATASYNC); + return ret; + } + return 0; +} + +static int v9fs_write_inode_dotl(struct inode *inode, + struct writeback_control *wbc) +{ + int ret; + struct v9fs_inode *v9inode; + /* + * send an fsync request to server irrespective of + * wbc->sync_mode. + */ + P9_DPRINTK(P9_DEBUG_VFS, "%s: inode %p\n", __func__, inode); + v9inode = V9FS_I(inode); + if (!v9inode->writeback_fid) + return 0; + ret = p9_client_fsync(v9inode->writeback_fid, 0); + if (ret < 0) { + __mark_inode_dirty(inode, I_DIRTY_DATASYNC); + return ret; + } + return 0; +} + static const struct super_operations v9fs_super_ops = { .alloc_inode = v9fs_alloc_inode, .destroy_inode = v9fs_destroy_inode, @@ -314,17 +345,18 @@ static const struct super_operations v9fs_super_ops = { .evict_inode = v9fs_evict_inode, .show_options = generic_show_options, .umount_begin = v9fs_umount_begin, + .write_inode = v9fs_write_inode, }; static const struct super_operations v9fs_super_ops_dotl = { .alloc_inode = v9fs_alloc_inode, .destroy_inode = v9fs_destroy_inode, - .sync_fs = v9fs_sync_fs, .statfs = v9fs_statfs, .drop_inode = v9fs_drop_inode, .evict_inode = v9fs_evict_inode, .show_options = generic_show_options, .umount_begin = v9fs_umount_begin, + .write_inode = v9fs_write_inode_dotl, }; struct file_system_type v9fs_fs_type = { diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index f34078d702d3..303983fabfd6 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -941,9 +941,13 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs) current->mm->start_stack = bprm->p; #ifdef arch_randomize_brk - if ((current->flags & PF_RANDOMIZE) && (randomize_va_space > 1)) + if ((current->flags & PF_RANDOMIZE) && (randomize_va_space > 1)) { current->mm->brk = current->mm->start_brk = arch_randomize_brk(current->mm); +#ifdef CONFIG_COMPAT_BRK + current->brk_randomized = 1; +#endif + } #endif if (current->personality & MMAP_PAGE_ZERO) { diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c index de34bfad9ec3..5d505aaa72fb 100644 --- a/fs/btrfs/acl.c +++ b/fs/btrfs/acl.c @@ -178,16 +178,17 @@ static int btrfs_xattr_acl_set(struct dentry *dentry, const char *name, if (value) { acl = posix_acl_from_xattr(value, size); - if (acl == NULL) { - value = NULL; - size = 0; + if (acl) { + ret = posix_acl_valid(acl); + if (ret) + goto out; } else if (IS_ERR(acl)) { return PTR_ERR(acl); } } ret = btrfs_set_acl(NULL, dentry->d_inode, acl, type); - +out: posix_acl_release(acl); return ret; diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 3458b5725540..8f4b81de3ae2 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -718,7 +718,7 @@ struct btrfs_space_info { u64 total_bytes; /* total bytes in the space, this doesn't take mirrors into account */ u64 bytes_used; /* total bytes used, - this does't take mirrors into account */ + this doesn't take mirrors into account */ u64 bytes_pinned; /* total bytes pinned, will be freed when the transaction finishes */ u64 bytes_reserved; /* total bytes the allocator has reserved for @@ -740,8 +740,10 @@ struct btrfs_space_info { */ unsigned long reservation_progress; - int full; /* indicates that we cannot allocate any more + int full:1; /* indicates that we cannot allocate any more chunks for this space */ + int chunk_alloc:1; /* set if we are allocating a chunk */ + int force_alloc; /* set if we need to force a chunk alloc for this space */ @@ -2576,6 +2578,11 @@ int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode, int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, struct inode *inode, u64 start, u64 end); int btrfs_release_file(struct inode *inode, struct file *file); +void btrfs_drop_pages(struct page **pages, size_t num_pages); +int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, + struct page **pages, size_t num_pages, + loff_t pos, size_t write_bytes, + struct extent_state **cached); /* tree-defrag.c */ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 8f1d44ba332f..228cf36ece83 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2824,6 +2824,7 @@ static int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans, spin_lock(&delayed_refs->lock); if (delayed_refs->num_entries == 0) { + spin_unlock(&delayed_refs->lock); printk(KERN_INFO "delayed_refs has NO entry\n"); return ret; } @@ -3057,7 +3058,7 @@ static int btrfs_cleanup_transaction(struct btrfs_root *root) btrfs_destroy_pinned_extent(root, root->fs_info->pinned_extents); - t->use_count = 0; + atomic_set(&t->use_count, 0); list_del_init(&t->list); memset(t, 0, sizeof(*t)); kmem_cache_free(btrfs_transaction_cachep, t); diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index f619c3cb13b7..cd52f7f556ef 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -33,6 +33,25 @@ #include "locking.h" #include "free-space-cache.h" +/* control flags for do_chunk_alloc's force field + * CHUNK_ALLOC_NO_FORCE means to only allocate a chunk + * if we really need one. + * + * CHUNK_ALLOC_FORCE means it must try to allocate one + * + * CHUNK_ALLOC_LIMITED means to only try and allocate one + * if we have very few chunks already allocated. This is + * used as part of the clustering code to help make sure + * we have a good pool of storage to cluster in, without + * filling the FS with empty chunks + * + */ +enum { + CHUNK_ALLOC_NO_FORCE = 0, + CHUNK_ALLOC_FORCE = 1, + CHUNK_ALLOC_LIMITED = 2, +}; + static int update_block_group(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 bytenr, u64 num_bytes, int alloc); @@ -3019,7 +3038,8 @@ static int update_space_info(struct btrfs_fs_info *info, u64 flags, found->bytes_readonly = 0; found->bytes_may_use = 0; found->full = 0; - found->force_alloc = 0; + found->force_alloc = CHUNK_ALLOC_NO_FORCE; + found->chunk_alloc = 0; *space_info = found; list_add_rcu(&found->list, &info->space_info); atomic_set(&found->caching_threads, 0); @@ -3150,7 +3170,7 @@ again: if (!data_sinfo->full && alloc_chunk) { u64 alloc_target; - data_sinfo->force_alloc = 1; + data_sinfo->force_alloc = CHUNK_ALLOC_FORCE; spin_unlock(&data_sinfo->lock); alloc: alloc_target = btrfs_get_alloc_profile(root, 1); @@ -3160,7 +3180,8 @@ alloc: ret = do_chunk_alloc(trans, root->fs_info->extent_root, bytes + 2 * 1024 * 1024, - alloc_target, 0); + alloc_target, + CHUNK_ALLOC_NO_FORCE); btrfs_end_transaction(trans, root); if (ret < 0) { if (ret != -ENOSPC) @@ -3239,31 +3260,56 @@ static void force_metadata_allocation(struct btrfs_fs_info *info) rcu_read_lock(); list_for_each_entry_rcu(found, head, list) { if (found->flags & BTRFS_BLOCK_GROUP_METADATA) - found->force_alloc = 1; + found->force_alloc = CHUNK_ALLOC_FORCE; } rcu_read_unlock(); } static int should_alloc_chunk(struct btrfs_root *root, - struct btrfs_space_info *sinfo, u64 alloc_bytes) + struct btrfs_space_info *sinfo, u64 alloc_bytes, + int force) { u64 num_bytes = sinfo->total_bytes - sinfo->bytes_readonly; + u64 num_allocated = sinfo->bytes_used + sinfo->bytes_reserved; u64 thresh; - if (sinfo->bytes_used + sinfo->bytes_reserved + - alloc_bytes + 256 * 1024 * 1024 < num_bytes) + if (force == CHUNK_ALLOC_FORCE) + return 1; + + /* + * in limited mode, we want to have some free space up to + * about 1% of the FS size. + */ + if (force == CHUNK_ALLOC_LIMITED) { + thresh = btrfs_super_total_bytes(&root->fs_info->super_copy); + thresh = max_t(u64, 64 * 1024 * 1024, + div_factor_fine(thresh, 1)); + + if (num_bytes - num_allocated < thresh) + return 1; + } + + /* + * we have two similar checks here, one based on percentage + * and once based on a hard number of 256MB. The idea + * is that if we have a good amount of free + * room, don't allocate a chunk. A good mount is + * less than 80% utilized of the chunks we have allocated, + * or more than 256MB free + */ + if (num_allocated + alloc_bytes + 256 * 1024 * 1024 < num_bytes) return 0; - if (sinfo->bytes_used + sinfo->bytes_reserved + - alloc_bytes < div_factor(num_bytes, 8)) + if (num_allocated + alloc_bytes < div_factor(num_bytes, 8)) return 0; thresh = btrfs_super_total_bytes(&root->fs_info->super_copy); + + /* 256MB or 5% of the FS */ thresh = max_t(u64, 256 * 1024 * 1024, div_factor_fine(thresh, 5)); if (num_bytes > thresh && sinfo->bytes_used < div_factor(num_bytes, 3)) return 0; - return 1; } @@ -3273,10 +3319,9 @@ static int do_chunk_alloc(struct btrfs_trans_handle *trans, { struct btrfs_space_info *space_info; struct btrfs_fs_info *fs_info = extent_root->fs_info; + int wait_for_alloc = 0; int ret = 0; - mutex_lock(&fs_info->chunk_mutex); - flags = btrfs_reduce_alloc_profile(extent_root, flags); space_info = __find_space_info(extent_root->fs_info, flags); @@ -3287,21 +3332,40 @@ static int do_chunk_alloc(struct btrfs_trans_handle *trans, } BUG_ON(!space_info); +again: spin_lock(&space_info->lock); if (space_info->force_alloc) - force = 1; + force = space_info->force_alloc; if (space_info->full) { spin_unlock(&space_info->lock); - goto out; + return 0; } - if (!force && !should_alloc_chunk(extent_root, space_info, - alloc_bytes)) { + if (!should_alloc_chunk(extent_root, space_info, alloc_bytes, force)) { spin_unlock(&space_info->lock); - goto out; + return 0; + } else if (space_info->chunk_alloc) { + wait_for_alloc = 1; + } else { + space_info->chunk_alloc = 1; } + spin_unlock(&space_info->lock); + mutex_lock(&fs_info->chunk_mutex); + + /* + * The chunk_mutex is held throughout the entirety of a chunk + * allocation, so once we've acquired the chunk_mutex we know that the + * other guy is done and we need to recheck and see if we should + * allocate. + */ + if (wait_for_alloc) { + mutex_unlock(&fs_info->chunk_mutex); + wait_for_alloc = 0; + goto again; + } + /* * If we have mixed data/metadata chunks we want to make sure we keep * allocating mixed chunks instead of individual chunks. @@ -3327,9 +3391,10 @@ static int do_chunk_alloc(struct btrfs_trans_handle *trans, space_info->full = 1; else ret = 1; - space_info->force_alloc = 0; + + space_info->force_alloc = CHUNK_ALLOC_NO_FORCE; + space_info->chunk_alloc = 0; spin_unlock(&space_info->lock); -out: mutex_unlock(&extent_root->fs_info->chunk_mutex); return ret; } @@ -5303,11 +5368,13 @@ loop: if (allowed_chunk_alloc) { ret = do_chunk_alloc(trans, root, num_bytes + - 2 * 1024 * 1024, data, 1); + 2 * 1024 * 1024, data, + CHUNK_ALLOC_LIMITED); allowed_chunk_alloc = 0; done_chunk_alloc = 1; - } else if (!done_chunk_alloc) { - space_info->force_alloc = 1; + } else if (!done_chunk_alloc && + space_info->force_alloc == CHUNK_ALLOC_NO_FORCE) { + space_info->force_alloc = CHUNK_ALLOC_LIMITED; } if (loop < LOOP_NO_EMPTY_SIZE) { @@ -5393,7 +5460,8 @@ again: */ if (empty_size || root->ref_cows) ret = do_chunk_alloc(trans, root->fs_info->extent_root, - num_bytes + 2 * 1024 * 1024, data, 0); + num_bytes + 2 * 1024 * 1024, data, + CHUNK_ALLOC_NO_FORCE); WARN_ON(num_bytes < root->sectorsize); ret = find_free_extent(trans, root, num_bytes, empty_size, @@ -5405,7 +5473,7 @@ again: num_bytes = num_bytes & ~(root->sectorsize - 1); num_bytes = max(num_bytes, min_alloc_size); do_chunk_alloc(trans, root->fs_info->extent_root, - num_bytes, data, 1); + num_bytes, data, CHUNK_ALLOC_FORCE); goto again; } if (ret == -ENOSPC && btrfs_test_opt(root, ENOSPC_DEBUG)) { @@ -7991,6 +8059,10 @@ static noinline int relocate_one_extent(struct btrfs_root *extent_root, u64 group_start = group->key.objectid; new_extents = kmalloc(sizeof(*new_extents), GFP_NOFS); + if (!new_extents) { + ret = -ENOMEM; + goto out; + } nr_extents = 1; ret = get_new_locations(reloc_inode, extent_key, @@ -8109,13 +8181,15 @@ int btrfs_set_block_group_ro(struct btrfs_root *root, alloc_flags = update_block_group_flags(root, cache->flags); if (alloc_flags != cache->flags) - do_chunk_alloc(trans, root, 2 * 1024 * 1024, alloc_flags, 1); + do_chunk_alloc(trans, root, 2 * 1024 * 1024, alloc_flags, + CHUNK_ALLOC_FORCE); ret = set_block_group_ro(cache); if (!ret) goto out; alloc_flags = get_alloc_profile(root, cache->space_info->flags); - ret = do_chunk_alloc(trans, root, 2 * 1024 * 1024, alloc_flags, 1); + ret = do_chunk_alloc(trans, root, 2 * 1024 * 1024, alloc_flags, + CHUNK_ALLOC_FORCE); if (ret < 0) goto out; ret = set_block_group_ro(cache); @@ -8128,7 +8202,8 @@ int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 type) { u64 alloc_flags = get_alloc_profile(root, type); - return do_chunk_alloc(trans, root, 2 * 1024 * 1024, alloc_flags, 1); + return do_chunk_alloc(trans, root, 2 * 1024 * 1024, alloc_flags, + CHUNK_ALLOC_FORCE); } /* diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 20ddb28602a8..ba41da59e31b 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -690,6 +690,15 @@ static void cache_state(struct extent_state *state, } } +static void uncache_state(struct extent_state **cached_ptr) +{ + if (cached_ptr && (*cached_ptr)) { + struct extent_state *state = *cached_ptr; + *cached_ptr = NULL; + free_extent_state(state); + } +} + /* * set some bits on a range in the tree. This may require allocations or * sleeping, so the gfp mask is used to indicate what is allowed. @@ -940,10 +949,10 @@ static int clear_extent_new(struct extent_io_tree *tree, u64 start, u64 end, } int set_extent_uptodate(struct extent_io_tree *tree, u64 start, u64 end, - gfp_t mask) + struct extent_state **cached_state, gfp_t mask) { - return set_extent_bit(tree, start, end, EXTENT_UPTODATE, 0, NULL, - NULL, mask); + return set_extent_bit(tree, start, end, EXTENT_UPTODATE, 0, + NULL, cached_state, mask); } static int clear_extent_uptodate(struct extent_io_tree *tree, u64 start, @@ -1012,8 +1021,7 @@ int unlock_extent_cached(struct extent_io_tree *tree, u64 start, u64 end, mask); } -int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end, - gfp_t mask) +int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end, gfp_t mask) { return clear_extent_bit(tree, start, end, EXTENT_LOCKED, 1, 0, NULL, mask); @@ -1735,6 +1743,9 @@ static void end_bio_extent_readpage(struct bio *bio, int err) do { struct page *page = bvec->bv_page; + struct extent_state *cached = NULL; + struct extent_state *state; + tree = &BTRFS_I(page->mapping->host)->io_tree; start = ((u64)page->index << PAGE_CACHE_SHIFT) + @@ -1749,9 +1760,20 @@ static void end_bio_extent_readpage(struct bio *bio, int err) if (++bvec <= bvec_end) prefetchw(&bvec->bv_page->flags); + spin_lock(&tree->lock); + state = find_first_extent_bit_state(tree, start, EXTENT_LOCKED); + if (state && state->start == start) { + /* + * take a reference on the state, unlock will drop + * the ref + */ + cache_state(state, &cached); + } + spin_unlock(&tree->lock); + if (uptodate && tree->ops && tree->ops->readpage_end_io_hook) { ret = tree->ops->readpage_end_io_hook(page, start, end, - NULL); + state); if (ret) uptodate = 0; } @@ -1764,15 +1786,16 @@ static void end_bio_extent_readpage(struct bio *bio, int err) test_bit(BIO_UPTODATE, &bio->bi_flags); if (err) uptodate = 0; + uncache_state(&cached); continue; } } if (uptodate) { - set_extent_uptodate(tree, start, end, + set_extent_uptodate(tree, start, end, &cached, GFP_ATOMIC); } - unlock_extent(tree, start, end, GFP_ATOMIC); + unlock_extent_cached(tree, start, end, &cached, GFP_ATOMIC); if (whole_page) { if (uptodate) { @@ -1811,6 +1834,7 @@ static void end_bio_extent_preparewrite(struct bio *bio, int err) do { struct page *page = bvec->bv_page; + struct extent_state *cached = NULL; tree = &BTRFS_I(page->mapping->host)->io_tree; start = ((u64)page->index << PAGE_CACHE_SHIFT) + @@ -1821,13 +1845,14 @@ static void end_bio_extent_preparewrite(struct bio *bio, int err) prefetchw(&bvec->bv_page->flags); if (uptodate) { - set_extent_uptodate(tree, start, end, GFP_ATOMIC); + set_extent_uptodate(tree, start, end, &cached, + GFP_ATOMIC); } else { ClearPageUptodate(page); SetPageError(page); } - unlock_extent(tree, start, end, GFP_ATOMIC); + unlock_extent_cached(tree, start, end, &cached, GFP_ATOMIC); } while (bvec >= bio->bi_io_vec); @@ -2016,14 +2041,17 @@ static int __extent_read_full_page(struct extent_io_tree *tree, while (cur <= end) { if (cur >= last_byte) { char *userpage; + struct extent_state *cached = NULL; + iosize = PAGE_CACHE_SIZE - page_offset; userpage = kmap_atomic(page, KM_USER0); memset(userpage + page_offset, 0, iosize); flush_dcache_page(page); kunmap_atomic(userpage, KM_USER0); set_extent_uptodate(tree, cur, cur + iosize - 1, - GFP_NOFS); - unlock_extent(tree, cur, cur + iosize - 1, GFP_NOFS); + &cached, GFP_NOFS); + unlock_extent_cached(tree, cur, cur + iosize - 1, + &cached, GFP_NOFS); break; } em = get_extent(inode, page, page_offset, cur, @@ -2063,14 +2091,17 @@ static int __extent_read_full_page(struct extent_io_tree *tree, /* we've found a hole, just zero and go on */ if (block_start == EXTENT_MAP_HOLE) { char *userpage; + struct extent_state *cached = NULL; + userpage = kmap_atomic(page, KM_USER0); memset(userpage + page_offset, 0, iosize); flush_dcache_page(page); kunmap_atomic(userpage, KM_USER0); set_extent_uptodate(tree, cur, cur + iosize - 1, - GFP_NOFS); - unlock_extent(tree, cur, cur + iosize - 1, GFP_NOFS); + &cached, GFP_NOFS); + unlock_extent_cached(tree, cur, cur + iosize - 1, + &cached, GFP_NOFS); cur = cur + iosize; page_offset += iosize; continue; @@ -2650,7 +2681,7 @@ int extent_readpages(struct extent_io_tree *tree, prefetchw(&page->flags); list_del(&page->lru); if (!add_to_page_cache_lru(page, mapping, - page->index, GFP_KERNEL)) { + page->index, GFP_NOFS)) { __extent_read_full_page(tree, page, get_extent, &bio, 0, &bio_flags); } @@ -2789,9 +2820,12 @@ int extent_prepare_write(struct extent_io_tree *tree, iocount++; block_start = block_start + iosize; } else { - set_extent_uptodate(tree, block_start, cur_end, + struct extent_state *cached = NULL; + + set_extent_uptodate(tree, block_start, cur_end, &cached, GFP_NOFS); - unlock_extent(tree, block_start, cur_end, GFP_NOFS); + unlock_extent_cached(tree, block_start, cur_end, + &cached, GFP_NOFS); block_start = cur_end + 1; } page_offset = block_start & (PAGE_CACHE_SIZE - 1); @@ -3457,7 +3491,7 @@ int set_extent_buffer_uptodate(struct extent_io_tree *tree, num_pages = num_extent_pages(eb->start, eb->len); set_extent_uptodate(tree, eb->start, eb->start + eb->len - 1, - GFP_NOFS); + NULL, GFP_NOFS); for (i = 0; i < num_pages; i++) { page = extent_buffer_page(eb, i); if ((i == 0 && (eb->start & (PAGE_CACHE_SIZE - 1))) || @@ -3885,6 +3919,12 @@ static void move_pages(struct page *dst_page, struct page *src_page, kunmap_atomic(dst_kaddr, KM_USER0); } +static inline bool areas_overlap(unsigned long src, unsigned long dst, unsigned long len) +{ + unsigned long distance = (src > dst) ? src - dst : dst - src; + return distance < len; +} + static void copy_pages(struct page *dst_page, struct page *src_page, unsigned long dst_off, unsigned long src_off, unsigned long len) @@ -3892,10 +3932,12 @@ static void copy_pages(struct page *dst_page, struct page *src_page, char *dst_kaddr = kmap_atomic(dst_page, KM_USER0); char *src_kaddr; - if (dst_page != src_page) + if (dst_page != src_page) { src_kaddr = kmap_atomic(src_page, KM_USER1); - else + } else { src_kaddr = dst_kaddr; + BUG_ON(areas_overlap(src_off, dst_off, len)); + } memcpy(dst_kaddr + dst_off, src_kaddr + src_off, len); kunmap_atomic(dst_kaddr, KM_USER0); @@ -3970,7 +4012,7 @@ void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset, "len %lu len %lu\n", dst_offset, len, dst->len); BUG_ON(1); } - if (dst_offset < src_offset) { + if (!areas_overlap(src_offset, dst_offset, len)) { memcpy_extent_buffer(dst, dst_offset, src_offset, len); return; } diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index f62c5442835d..af2d7179c372 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -208,7 +208,7 @@ int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, int bits, int exclusive_bits, u64 *failed_start, struct extent_state **cached_state, gfp_t mask); int set_extent_uptodate(struct extent_io_tree *tree, u64 start, u64 end, - gfp_t mask); + struct extent_state **cached_state, gfp_t mask); int set_extent_new(struct extent_io_tree *tree, u64 start, u64 end, gfp_t mask); int set_extent_dirty(struct extent_io_tree *tree, u64 start, u64 end, diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index e621ea54a3fd..75899a01dded 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -104,7 +104,7 @@ static noinline int btrfs_copy_from_user(loff_t pos, int num_pages, /* * unlocks pages after btrfs_file_write is done with them */ -static noinline void btrfs_drop_pages(struct page **pages, size_t num_pages) +void btrfs_drop_pages(struct page **pages, size_t num_pages) { size_t i; for (i = 0; i < num_pages; i++) { @@ -127,16 +127,13 @@ static noinline void btrfs_drop_pages(struct page **pages, size_t num_pages) * this also makes the decision about creating an inline extent vs * doing real data extents, marking pages dirty and delalloc as required. */ -static noinline int dirty_and_release_pages(struct btrfs_root *root, - struct file *file, - struct page **pages, - size_t num_pages, - loff_t pos, - size_t write_bytes) +int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, + struct page **pages, size_t num_pages, + loff_t pos, size_t write_bytes, + struct extent_state **cached) { int err = 0; int i; - struct inode *inode = fdentry(file)->d_inode; u64 num_bytes; u64 start_pos; u64 end_of_last_block; @@ -149,7 +146,7 @@ static noinline int dirty_and_release_pages(struct btrfs_root *root, end_of_last_block = start_pos + num_bytes - 1; err = btrfs_set_extent_delalloc(inode, start_pos, end_of_last_block, - NULL); + cached); if (err) return err; @@ -992,9 +989,9 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file, } if (copied > 0) { - ret = dirty_and_release_pages(root, file, pages, - dirty_pages, pos, - copied); + ret = btrfs_dirty_pages(root, inode, pages, + dirty_pages, pos, copied, + NULL); if (ret) { btrfs_delalloc_release_space(inode, dirty_pages << PAGE_CACHE_SHIFT); diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index f561c953205b..63731a1fb0a1 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -508,6 +508,7 @@ int btrfs_write_out_cache(struct btrfs_root *root, struct inode *inode; struct rb_node *node; struct list_head *pos, *n; + struct page **pages; struct page *page; struct extent_state *cached_state = NULL; struct btrfs_free_cluster *cluster = NULL; @@ -517,13 +518,13 @@ int btrfs_write_out_cache(struct btrfs_root *root, u64 start, end, len; u64 bytes = 0; u32 *crc, *checksums; - pgoff_t index = 0, last_index = 0; unsigned long first_page_offset; - int num_checksums; + int index = 0, num_pages = 0; int entries = 0; int bitmaps = 0; int ret = 0; bool next_page = false; + bool out_of_space = false; root = root->fs_info->tree_root; @@ -551,24 +552,31 @@ int btrfs_write_out_cache(struct btrfs_root *root, return 0; } - last_index = (i_size_read(inode) - 1) >> PAGE_CACHE_SHIFT; + num_pages = (i_size_read(inode) + PAGE_CACHE_SIZE - 1) >> + PAGE_CACHE_SHIFT; filemap_write_and_wait(inode->i_mapping); btrfs_wait_ordered_range(inode, inode->i_size & ~(root->sectorsize - 1), (u64)-1); /* We need a checksum per page. */ - num_checksums = i_size_read(inode) / PAGE_CACHE_SIZE; - crc = checksums = kzalloc(sizeof(u32) * num_checksums, GFP_NOFS); + crc = checksums = kzalloc(sizeof(u32) * num_pages, GFP_NOFS); if (!crc) { iput(inode); return 0; } + pages = kzalloc(sizeof(struct page *) * num_pages, GFP_NOFS); + if (!pages) { + kfree(crc); + iput(inode); + return 0; + } + /* Since the first page has all of our checksums and our generation we * need to calculate the offset into the page that we can start writing * our entries. */ - first_page_offset = (sizeof(u32) * num_checksums) + sizeof(u64); + first_page_offset = (sizeof(u32) * num_pages) + sizeof(u64); /* Get the cluster for this block_group if it exists */ if (!list_empty(&block_group->cluster_list)) @@ -590,20 +598,18 @@ int btrfs_write_out_cache(struct btrfs_root *root, * after find_get_page at this point. Just putting this here so people * know and don't freak out. */ - while (index <= last_index) { + while (index < num_pages) { page = grab_cache_page(inode->i_mapping, index); if (!page) { - pgoff_t i = 0; + int i; - while (i < index) { - page = find_get_page(inode->i_mapping, i); - unlock_page(page); - page_cache_release(page); - page_cache_release(page); - i++; + for (i = 0; i < num_pages; i++) { + unlock_page(pages[i]); + page_cache_release(pages[i]); } goto out_free; } + pages[index] = page; index++; } @@ -631,7 +637,12 @@ int btrfs_write_out_cache(struct btrfs_root *root, offset = start_offset; } - page = find_get_page(inode->i_mapping, index); + if (index >= num_pages) { + out_of_space = true; + break; + } + + page = pages[index]; addr = kmap(page); entry = addr + start_offset; @@ -708,23 +719,6 @@ int btrfs_write_out_cache(struct btrfs_root *root, bytes += PAGE_CACHE_SIZE; - ClearPageChecked(page); - set_page_extent_mapped(page); - SetPageUptodate(page); - set_page_dirty(page); - - /* - * We need to release our reference we got for grab_cache_page, - * except for the first page which will hold our checksums, we - * do that below. - */ - if (index != 0) { - unlock_page(page); - page_cache_release(page); - } - - page_cache_release(page); - index++; } while (node || next_page); @@ -734,7 +728,11 @@ int btrfs_write_out_cache(struct btrfs_root *root, struct btrfs_free_space *entry = list_entry(pos, struct btrfs_free_space, list); - page = find_get_page(inode->i_mapping, index); + if (index >= num_pages) { + out_of_space = true; + break; + } + page = pages[index]; addr = kmap(page); memcpy(addr, entry->bitmap, PAGE_CACHE_SIZE); @@ -745,64 +743,58 @@ int btrfs_write_out_cache(struct btrfs_root *root, crc++; bytes += PAGE_CACHE_SIZE; - ClearPageChecked(page); - set_page_extent_mapped(page); - SetPageUptodate(page); - set_page_dirty(page); - unlock_page(page); - page_cache_release(page); - page_cache_release(page); list_del_init(&entry->list); index++; } + if (out_of_space) { + btrfs_drop_pages(pages, num_pages); + unlock_extent_cached(&BTRFS_I(inode)->io_tree, 0, + i_size_read(inode) - 1, &cached_state, + GFP_NOFS); + ret = 0; + goto out_free; + } + /* Zero out the rest of the pages just to make sure */ - while (index <= last_index) { + while (index < num_pages) { void *addr; - page = find_get_page(inode->i_mapping, index); - + page = pages[index]; addr = kmap(page); memset(addr, 0, PAGE_CACHE_SIZE); kunmap(page); - ClearPageChecked(page); - set_page_extent_mapped(page); - SetPageUptodate(page); - set_page_dirty(page); - unlock_page(page); - page_cache_release(page); - page_cache_release(page); bytes += PAGE_CACHE_SIZE; index++; } - btrfs_set_extent_delalloc(inode, 0, bytes - 1, &cached_state); - /* Write the checksums and trans id to the first page */ { void *addr; u64 *gen; - page = find_get_page(inode->i_mapping, 0); + page = pages[0]; addr = kmap(page); - memcpy(addr, checksums, sizeof(u32) * num_checksums); - gen = addr + (sizeof(u32) * num_checksums); + memcpy(addr, checksums, sizeof(u32) * num_pages); + gen = addr + (sizeof(u32) * num_pages); *gen = trans->transid; kunmap(page); - ClearPageChecked(page); - set_page_extent_mapped(page); - SetPageUptodate(page); - set_page_dirty(page); - unlock_page(page); - page_cache_release(page); - page_cache_release(page); } - BTRFS_I(inode)->generation = trans->transid; + ret = btrfs_dirty_pages(root, inode, pages, num_pages, 0, + bytes, &cached_state); + btrfs_drop_pages(pages, num_pages); unlock_extent_cached(&BTRFS_I(inode)->io_tree, 0, i_size_read(inode) - 1, &cached_state, GFP_NOFS); + if (ret) { + ret = 0; + goto out_free; + } + + BTRFS_I(inode)->generation = trans->transid; + filemap_write_and_wait(inode->i_mapping); key.objectid = BTRFS_FREE_SPACE_OBJECTID; @@ -853,6 +845,7 @@ out_free: BTRFS_I(inode)->generation = 0; } kfree(checksums); + kfree(pages); btrfs_update_inode(trans, root, inode); iput(inode); return ret; @@ -1775,10 +1768,13 @@ void btrfs_remove_free_space_cache(struct btrfs_block_group_cache *block_group) while ((node = rb_last(&block_group->free_space_offset)) != NULL) { info = rb_entry(node, struct btrfs_free_space, offset_index); - unlink_free_space(block_group, info); - if (info->bitmap) - kfree(info->bitmap); - kmem_cache_free(btrfs_free_space_cachep, info); + if (!info->bitmap) { + unlink_free_space(block_group, info); + kmem_cache_free(btrfs_free_space_cachep, info); + } else { + free_bitmap(block_group, info); + } + if (need_resched()) { spin_unlock(&block_group->tree_lock); cond_resched(); @@ -2308,7 +2304,7 @@ int btrfs_trim_block_group(struct btrfs_block_group_cache *block_group, start = entry->offset; bytes = min(entry->bytes, end - start); unlink_free_space(block_group, entry); - kfree(entry); + kmem_cache_free(btrfs_free_space_cachep, entry); } spin_unlock(&block_group->tree_lock); diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 5cc64ab9c485..7cd8ab0ef04d 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -954,6 +954,7 @@ static int cow_file_range_async(struct inode *inode, struct page *locked_page, 1, 0, NULL, GFP_NOFS); while (start < end) { async_cow = kmalloc(sizeof(*async_cow), GFP_NOFS); + BUG_ON(!async_cow); async_cow->inode = inode; async_cow->root = root; async_cow->locked_page = locked_page; @@ -1770,9 +1771,12 @@ static int btrfs_finish_ordered_io(struct inode *inode, u64 start, u64 end) add_pending_csums(trans, inode, ordered_extent->file_offset, &ordered_extent->list); - btrfs_ordered_update_i_size(inode, 0, ordered_extent); - ret = btrfs_update_inode(trans, root, inode); - BUG_ON(ret); + ret = btrfs_ordered_update_i_size(inode, 0, ordered_extent); + if (!ret) { + ret = btrfs_update_inode(trans, root, inode); + BUG_ON(ret); + } + ret = 0; out: if (nolock) { if (trans) @@ -2590,6 +2594,13 @@ static void fill_inode_item(struct btrfs_trans_handle *trans, struct btrfs_inode_item *item, struct inode *inode) { + if (!leaf->map_token) + map_private_extent_buffer(leaf, (unsigned long)item, + sizeof(struct btrfs_inode_item), + &leaf->map_token, &leaf->kaddr, + &leaf->map_start, &leaf->map_len, + KM_USER1); + btrfs_set_inode_uid(leaf, item, inode->i_uid); btrfs_set_inode_gid(leaf, item, inode->i_gid); btrfs_set_inode_size(leaf, item, BTRFS_I(inode)->disk_i_size); @@ -2618,6 +2629,11 @@ static void fill_inode_item(struct btrfs_trans_handle *trans, btrfs_set_inode_rdev(leaf, item, inode->i_rdev); btrfs_set_inode_flags(leaf, item, BTRFS_I(inode)->flags); btrfs_set_inode_block_group(leaf, item, BTRFS_I(inode)->block_group); + + if (leaf->map_token) { + unmap_extent_buffer(leaf, leaf->map_token, KM_USER1); + leaf->map_token = NULL; + } } /* @@ -4207,10 +4223,8 @@ static int btrfs_real_readdir(struct file *filp, void *dirent, struct btrfs_key found_key; struct btrfs_path *path; int ret; - u32 nritems; struct extent_buffer *leaf; int slot; - int advance; unsigned char d_type; int over = 0; u32 di_cur; @@ -4253,27 +4267,19 @@ static int btrfs_real_readdir(struct file *filp, void *dirent, ret = btrfs_search_slot(NULL, root, &key, path, 0, 0); if (ret < 0) goto err; - advance = 0; while (1) { leaf = path->nodes[0]; - nritems = btrfs_header_nritems(leaf); slot = path->slots[0]; - if (advance || slot >= nritems) { - if (slot >= nritems - 1) { - ret = btrfs_next_leaf(root, path); - if (ret) - break; - leaf = path->nodes[0]; - nritems = btrfs_header_nritems(leaf); - slot = path->slots[0]; - } else { - slot++; - path->slots[0]++; - } + if (slot >= btrfs_header_nritems(leaf)) { + ret = btrfs_next_leaf(root, path); + if (ret < 0) + goto err; + else if (ret > 0) + break; + continue; } - advance = 1; item = btrfs_item_nr(leaf, slot); btrfs_item_key_to_cpu(leaf, &found_key, slot); @@ -4282,7 +4288,7 @@ static int btrfs_real_readdir(struct file *filp, void *dirent, if (btrfs_key_type(&found_key) != key_type) break; if (found_key.offset < filp->f_pos) - continue; + goto next; filp->f_pos = found_key.offset; @@ -4335,6 +4341,8 @@ skip: di_cur += di_len; di = (struct btrfs_dir_item *)((char *)di + di_len); } +next: + path->slots[0]++; } /* Reached end of directory/root. Bump pos past the last item. */ @@ -4527,14 +4535,17 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, BUG_ON(!path); inode = new_inode(root->fs_info->sb); - if (!inode) + if (!inode) { + btrfs_free_path(path); return ERR_PTR(-ENOMEM); + } if (dir) { trace_btrfs_inode_request(dir); ret = btrfs_set_inode_index(dir, index); if (ret) { + btrfs_free_path(path); iput(inode); return ERR_PTR(ret); } @@ -4721,9 +4732,10 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry, inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name, dentry->d_name.len, dir->i_ino, objectid, BTRFS_I(dir)->block_group, mode, &index); - err = PTR_ERR(inode); - if (IS_ERR(inode)) + if (IS_ERR(inode)) { + err = PTR_ERR(inode); goto out_unlock; + } err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name); if (err) { @@ -4782,9 +4794,10 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry, inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name, dentry->d_name.len, dir->i_ino, objectid, BTRFS_I(dir)->block_group, mode, &index); - err = PTR_ERR(inode); - if (IS_ERR(inode)) + if (IS_ERR(inode)) { + err = PTR_ERR(inode); goto out_unlock; + } err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name); if (err) { @@ -4834,9 +4847,6 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir, if (inode->i_nlink == ~0U) return -EMLINK; - btrfs_inc_nlink(inode); - inode->i_ctime = CURRENT_TIME; - err = btrfs_set_inode_index(dir, &index); if (err) goto fail; @@ -4852,6 +4862,9 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir, goto fail; } + btrfs_inc_nlink(inode); + inode->i_ctime = CURRENT_TIME; + btrfs_set_trans_block_group(trans, dir); ihold(inode); @@ -4989,6 +5002,8 @@ static noinline int uncompress_inline(struct btrfs_path *path, inline_size = btrfs_file_extent_inline_item_len(leaf, btrfs_item_nr(leaf, path->slots[0])); tmp = kmalloc(inline_size, GFP_NOFS); + if (!tmp) + return -ENOMEM; ptr = btrfs_file_extent_inline_start(item); read_extent_buffer(leaf, tmp, ptr, inline_size); @@ -5221,7 +5236,7 @@ again: btrfs_mark_buffer_dirty(leaf); } set_extent_uptodate(io_tree, em->start, - extent_map_end(em) - 1, GFP_NOFS); + extent_map_end(em) - 1, NULL, GFP_NOFS); goto insert; } else { printk(KERN_ERR "btrfs unknown found_type %d\n", found_type); @@ -5428,17 +5443,30 @@ out: } static struct extent_map *btrfs_new_extent_direct(struct inode *inode, + struct extent_map *em, u64 start, u64 len) { struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_trans_handle *trans; - struct extent_map *em; struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree; struct btrfs_key ins; u64 alloc_hint; int ret; + bool insert = false; - btrfs_drop_extent_cache(inode, start, start + len - 1, 0); + /* + * Ok if the extent map we looked up is a hole and is for the exact + * range we want, there is no reason to allocate a new one, however if + * it is not right then we need to free this one and drop the cache for + * our range. + */ + if (em->block_start != EXTENT_MAP_HOLE || em->start != start || + em->len != len) { + free_extent_map(em); + em = NULL; + insert = true; + btrfs_drop_extent_cache(inode, start, start + len - 1, 0); + } trans = btrfs_join_transaction(root, 0); if (IS_ERR(trans)) @@ -5454,10 +5482,12 @@ static struct extent_map *btrfs_new_extent_direct(struct inode *inode, goto out; } - em = alloc_extent_map(GFP_NOFS); if (!em) { - em = ERR_PTR(-ENOMEM); - goto out; + em = alloc_extent_map(GFP_NOFS); + if (!em) { + em = ERR_PTR(-ENOMEM); + goto out; + } } em->start = start; @@ -5467,9 +5497,15 @@ static struct extent_map *btrfs_new_extent_direct(struct inode *inode, em->block_start = ins.objectid; em->block_len = ins.offset; em->bdev = root->fs_info->fs_devices->latest_bdev; + + /* + * We need to do this because if we're using the original em we searched + * for, we could have EXTENT_FLAG_VACANCY set, and we don't want that. + */ + em->flags = 0; set_bit(EXTENT_FLAG_PINNED, &em->flags); - while (1) { + while (insert) { write_lock(&em_tree->lock); ret = add_extent_mapping(em_tree, em); write_unlock(&em_tree->lock); @@ -5687,8 +5723,7 @@ must_cow: * it above */ len = bh_result->b_size; - free_extent_map(em); - em = btrfs_new_extent_direct(inode, start, len); + em = btrfs_new_extent_direct(inode, em, start, len); if (IS_ERR(em)) return PTR_ERR(em); len = min(len, em->len - (start - em->start)); @@ -5851,8 +5886,10 @@ again: } add_pending_csums(trans, inode, ordered->file_offset, &ordered->list); - btrfs_ordered_update_i_size(inode, 0, ordered); - btrfs_update_inode(trans, root, inode); + ret = btrfs_ordered_update_i_size(inode, 0, ordered); + if (!ret) + btrfs_update_inode(trans, root, inode); + ret = 0; out_unlock: unlock_extent_cached(&BTRFS_I(inode)->io_tree, ordered->file_offset, ordered->file_offset + ordered->len - 1, @@ -5938,7 +5975,7 @@ static struct bio *btrfs_dio_bio_alloc(struct block_device *bdev, static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode, int rw, u64 file_offset, int skip_sum, - u32 *csums) + u32 *csums, int async_submit) { int write = rw & REQ_WRITE; struct btrfs_root *root = BTRFS_I(inode)->root; @@ -5949,13 +5986,24 @@ static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode, if (ret) goto err; - if (write && !skip_sum) { + if (skip_sum) + goto map; + + if (write && async_submit) { ret = btrfs_wq_submit_bio(root->fs_info, inode, rw, bio, 0, 0, file_offset, __btrfs_submit_bio_start_direct_io, __btrfs_submit_bio_done); goto err; + } else if (write) { + /* + * If we aren't doing async submit, calculate the csum of the + * bio now. + */ + ret = btrfs_csum_one_bio(root, inode, bio, file_offset, 1); + if (ret) + goto err; } else if (!skip_sum) { ret = btrfs_lookup_bio_sums_dio(root, inode, bio, file_offset, csums); @@ -5963,7 +6011,8 @@ static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode, goto err; } - ret = btrfs_map_bio(root, rw, bio, 0, 1); +map: + ret = btrfs_map_bio(root, rw, bio, 0, async_submit); err: bio_put(bio); return ret; @@ -5985,23 +6034,30 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, int nr_pages = 0; u32 *csums = dip->csums; int ret = 0; + int async_submit = 0; int write = rw & REQ_WRITE; - bio = btrfs_dio_bio_alloc(orig_bio->bi_bdev, start_sector, GFP_NOFS); - if (!bio) - return -ENOMEM; - bio->bi_private = dip; - bio->bi_end_io = btrfs_end_dio_bio; - atomic_inc(&dip->pending_bios); - map_length = orig_bio->bi_size; ret = btrfs_map_block(map_tree, READ, start_sector << 9, &map_length, NULL, 0); if (ret) { - bio_put(bio); + bio_put(orig_bio); return -EIO; } + if (map_length >= orig_bio->bi_size) { + bio = orig_bio; + goto submit; + } + + async_submit = 1; + bio = btrfs_dio_bio_alloc(orig_bio->bi_bdev, start_sector, GFP_NOFS); + if (!bio) + return -ENOMEM; + bio->bi_private = dip; + bio->bi_end_io = btrfs_end_dio_bio; + atomic_inc(&dip->pending_bios); + while (bvec <= (orig_bio->bi_io_vec + orig_bio->bi_vcnt - 1)) { if (unlikely(map_length < submit_len + bvec->bv_len || bio_add_page(bio, bvec->bv_page, bvec->bv_len, @@ -6015,7 +6071,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, atomic_inc(&dip->pending_bios); ret = __btrfs_submit_dio_bio(bio, inode, rw, file_offset, skip_sum, - csums); + csums, async_submit); if (ret) { bio_put(bio); atomic_dec(&dip->pending_bios); @@ -6052,8 +6108,9 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, } } +submit: ret = __btrfs_submit_dio_bio(bio, inode, rw, file_offset, skip_sum, - csums); + csums, async_submit); if (!ret) return 0; @@ -6148,6 +6205,7 @@ static ssize_t check_direct_IO(struct btrfs_root *root, int rw, struct kiocb *io unsigned long nr_segs) { int seg; + int i; size_t size; unsigned long addr; unsigned blocksize_mask = root->sectorsize - 1; @@ -6162,8 +6220,22 @@ static ssize_t check_direct_IO(struct btrfs_root *root, int rw, struct kiocb *io addr = (unsigned long)iov[seg].iov_base; size = iov[seg].iov_len; end += size; - if ((addr & blocksize_mask) || (size & blocksize_mask)) + if ((addr & blocksize_mask) || (size & blocksize_mask)) goto out; + + /* If this is a write we don't need to check anymore */ + if (rw & WRITE) + continue; + + /* + * Check to make sure we don't have duplicate iov_base's in this + * iovec, if so return EINVAL, otherwise we'll get csum errors + * when reading back. + */ + for (i = seg + 1; i < nr_segs; i++) { + if (iov[seg].iov_base == iov[i].iov_base) + goto out; + } } retval = 0; out: @@ -7206,9 +7278,10 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry, dentry->d_name.len, dir->i_ino, objectid, BTRFS_I(dir)->block_group, S_IFLNK|S_IRWXUGO, &index); - err = PTR_ERR(inode); - if (IS_ERR(inode)) + if (IS_ERR(inode)) { + err = PTR_ERR(inode); goto out_unlock; + } err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name); if (err) { diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index cfc264fefdb0..ffb48d6c5433 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -2287,7 +2287,7 @@ long btrfs_ioctl_space_info(struct btrfs_root *root, void __user *arg) struct btrfs_ioctl_space_info space; struct btrfs_ioctl_space_info *dest; struct btrfs_ioctl_space_info *dest_orig; - struct btrfs_ioctl_space_info *user_dest; + struct btrfs_ioctl_space_info __user *user_dest; struct btrfs_space_info *info; u64 types[] = {BTRFS_BLOCK_GROUP_DATA, BTRFS_BLOCK_GROUP_SYSTEM, diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 58e7de9cc90c..0ac712efcdf2 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -159,7 +159,7 @@ enum { Opt_compress_type, Opt_compress_force, Opt_compress_force_type, Opt_notreelog, Opt_ratio, Opt_flushoncommit, Opt_discard, Opt_space_cache, Opt_clear_cache, Opt_user_subvol_rm_allowed, - Opt_enospc_debug, Opt_err, + Opt_enospc_debug, Opt_subvolrootid, Opt_err, }; static match_table_t tokens = { @@ -189,6 +189,7 @@ static match_table_t tokens = { {Opt_clear_cache, "clear_cache"}, {Opt_user_subvol_rm_allowed, "user_subvol_rm_allowed"}, {Opt_enospc_debug, "enospc_debug"}, + {Opt_subvolrootid, "subvolrootid=%d"}, {Opt_err, NULL}, }; @@ -232,6 +233,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options) break; case Opt_subvol: case Opt_subvolid: + case Opt_subvolrootid: case Opt_device: /* * These are parsed by btrfs_parse_early_options @@ -388,7 +390,7 @@ out: */ static int btrfs_parse_early_options(const char *options, fmode_t flags, void *holder, char **subvol_name, u64 *subvol_objectid, - struct btrfs_fs_devices **fs_devices) + u64 *subvol_rootid, struct btrfs_fs_devices **fs_devices) { substring_t args[MAX_OPT_ARGS]; char *opts, *orig, *p; @@ -429,6 +431,18 @@ static int btrfs_parse_early_options(const char *options, fmode_t flags, *subvol_objectid = intarg; } break; + case Opt_subvolrootid: + intarg = 0; + error = match_int(&args[0], &intarg); + if (!error) { + /* we want the original fs_tree */ + if (!intarg) + *subvol_rootid = + BTRFS_FS_TREE_OBJECTID; + else + *subvol_rootid = intarg; + } + break; case Opt_device: error = btrfs_scan_one_device(match_strdup(&args[0]), flags, holder, fs_devices); @@ -736,6 +750,7 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags, fmode_t mode = FMODE_READ; char *subvol_name = NULL; u64 subvol_objectid = 0; + u64 subvol_rootid = 0; int error = 0; if (!(flags & MS_RDONLY)) @@ -743,7 +758,7 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags, error = btrfs_parse_early_options(data, mode, fs_type, &subvol_name, &subvol_objectid, - &fs_devices); + &subvol_rootid, &fs_devices); if (error) return ERR_PTR(error); @@ -807,15 +822,17 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags, s->s_flags |= MS_ACTIVE; } - root = get_default_root(s, subvol_objectid); - if (IS_ERR(root)) { - error = PTR_ERR(root); - deactivate_locked_super(s); - goto error_free_subvol_name; - } /* if they gave us a subvolume name bind mount into that */ if (strcmp(subvol_name, ".")) { struct dentry *new_root; + + root = get_default_root(s, subvol_rootid); + if (IS_ERR(root)) { + error = PTR_ERR(root); + deactivate_locked_super(s); + goto error_free_subvol_name; + } + mutex_lock(&root->d_inode->i_mutex); new_root = lookup_one_len(subvol_name, root, strlen(subvol_name)); @@ -836,6 +853,13 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags, } dput(root); root = new_root; + } else { + root = get_default_root(s, subvol_objectid); + if (IS_ERR(root)) { + error = PTR_ERR(root); + deactivate_locked_super(s); + goto error_free_subvol_name; + } } kfree(subvol_name); diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 5b158da7e0bb..c571734d5e5a 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -32,10 +32,8 @@ static noinline void put_transaction(struct btrfs_transaction *transaction) { - WARN_ON(transaction->use_count == 0); - transaction->use_count--; - if (transaction->use_count == 0) { - list_del_init(&transaction->list); + WARN_ON(atomic_read(&transaction->use_count) == 0); + if (atomic_dec_and_test(&transaction->use_count)) { memset(transaction, 0, sizeof(*transaction)); kmem_cache_free(btrfs_transaction_cachep, transaction); } @@ -60,14 +58,14 @@ static noinline int join_transaction(struct btrfs_root *root) if (!cur_trans) return -ENOMEM; root->fs_info->generation++; - cur_trans->num_writers = 1; + atomic_set(&cur_trans->num_writers, 1); cur_trans->num_joined = 0; cur_trans->transid = root->fs_info->generation; init_waitqueue_head(&cur_trans->writer_wait); init_waitqueue_head(&cur_trans->commit_wait); cur_trans->in_commit = 0; cur_trans->blocked = 0; - cur_trans->use_count = 1; + atomic_set(&cur_trans->use_count, 1); cur_trans->commit_done = 0; cur_trans->start_time = get_seconds(); @@ -88,7 +86,7 @@ static noinline int join_transaction(struct btrfs_root *root) root->fs_info->running_transaction = cur_trans; spin_unlock(&root->fs_info->new_trans_lock); } else { - cur_trans->num_writers++; + atomic_inc(&cur_trans->num_writers); cur_trans->num_joined++; } @@ -145,7 +143,7 @@ static void wait_current_trans(struct btrfs_root *root) cur_trans = root->fs_info->running_transaction; if (cur_trans && cur_trans->blocked) { DEFINE_WAIT(wait); - cur_trans->use_count++; + atomic_inc(&cur_trans->use_count); while (1) { prepare_to_wait(&root->fs_info->transaction_wait, &wait, TASK_UNINTERRUPTIBLE); @@ -181,6 +179,7 @@ static struct btrfs_trans_handle *start_transaction(struct btrfs_root *root, { struct btrfs_trans_handle *h; struct btrfs_transaction *cur_trans; + int retries = 0; int ret; if (root->fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR) @@ -204,7 +203,7 @@ again: } cur_trans = root->fs_info->running_transaction; - cur_trans->use_count++; + atomic_inc(&cur_trans->use_count); if (type != TRANS_JOIN_NOLOCK) mutex_unlock(&root->fs_info->trans_mutex); @@ -224,10 +223,18 @@ again: if (num_items > 0) { ret = btrfs_trans_reserve_metadata(h, root, num_items); - if (ret == -EAGAIN) { + if (ret == -EAGAIN && !retries) { + retries++; btrfs_commit_transaction(h, root); goto again; + } else if (ret == -EAGAIN) { + /* + * We have already retried and got EAGAIN, so really we + * don't have space, so set ret to -ENOSPC. + */ + ret = -ENOSPC; } + if (ret < 0) { btrfs_end_transaction(h, root); return ERR_PTR(ret); @@ -327,7 +334,7 @@ int btrfs_wait_for_commit(struct btrfs_root *root, u64 transid) goto out_unlock; /* nothing committing|committed */ } - cur_trans->use_count++; + atomic_inc(&cur_trans->use_count); mutex_unlock(&root->fs_info->trans_mutex); wait_for_commit(root, cur_trans); @@ -457,18 +464,14 @@ static int __btrfs_end_transaction(struct btrfs_trans_handle *trans, wake_up_process(info->transaction_kthread); } - if (lock) - mutex_lock(&info->trans_mutex); WARN_ON(cur_trans != info->running_transaction); - WARN_ON(cur_trans->num_writers < 1); - cur_trans->num_writers--; + WARN_ON(atomic_read(&cur_trans->num_writers) < 1); + atomic_dec(&cur_trans->num_writers); smp_mb(); if (waitqueue_active(&cur_trans->writer_wait)) wake_up(&cur_trans->writer_wait); put_transaction(cur_trans); - if (lock) - mutex_unlock(&info->trans_mutex); if (current->journal_info == trans) current->journal_info = NULL; @@ -1178,7 +1181,7 @@ int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans, /* take transaction reference */ mutex_lock(&root->fs_info->trans_mutex); cur_trans = trans->transaction; - cur_trans->use_count++; + atomic_inc(&cur_trans->use_count); mutex_unlock(&root->fs_info->trans_mutex); btrfs_end_transaction(trans, root); @@ -1237,7 +1240,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, mutex_lock(&root->fs_info->trans_mutex); if (cur_trans->in_commit) { - cur_trans->use_count++; + atomic_inc(&cur_trans->use_count); mutex_unlock(&root->fs_info->trans_mutex); btrfs_end_transaction(trans, root); @@ -1259,7 +1262,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, prev_trans = list_entry(cur_trans->list.prev, struct btrfs_transaction, list); if (!prev_trans->commit_done) { - prev_trans->use_count++; + atomic_inc(&prev_trans->use_count); mutex_unlock(&root->fs_info->trans_mutex); wait_for_commit(root, prev_trans); @@ -1300,14 +1303,14 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, TASK_UNINTERRUPTIBLE); smp_mb(); - if (cur_trans->num_writers > 1) + if (atomic_read(&cur_trans->num_writers) > 1) schedule_timeout(MAX_SCHEDULE_TIMEOUT); else if (should_grow) schedule_timeout(1); mutex_lock(&root->fs_info->trans_mutex); finish_wait(&cur_trans->writer_wait, &wait); - } while (cur_trans->num_writers > 1 || + } while (atomic_read(&cur_trans->num_writers) > 1 || (should_grow && cur_trans->num_joined != joined)); ret = create_pending_snapshots(trans, root->fs_info); @@ -1394,6 +1397,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, wake_up(&cur_trans->commit_wait); + list_del_init(&cur_trans->list); put_transaction(cur_trans); put_transaction(cur_trans); diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h index 229a594cacd5..e441acc6c584 100644 --- a/fs/btrfs/transaction.h +++ b/fs/btrfs/transaction.h @@ -27,11 +27,11 @@ struct btrfs_transaction { * total writers in this transaction, it must be zero before the * transaction can end */ - unsigned long num_writers; + atomic_t num_writers; unsigned long num_joined; int in_commit; - int use_count; + atomic_t use_count; int commit_done; int blocked; struct list_head list; diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index c50271ad3157..f997ec0c1ba4 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -2209,8 +2209,10 @@ int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans, log = root->log_root; path = btrfs_alloc_path(); - if (!path) - return -ENOMEM; + if (!path) { + err = -ENOMEM; + goto out_unlock; + } di = btrfs_lookup_dir_item(trans, log, path, dir->i_ino, name, name_len, -1); @@ -2271,6 +2273,7 @@ int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans, } fail: btrfs_free_path(path); +out_unlock: mutex_unlock(&BTRFS_I(dir)->log_mutex); if (ret == -ENOSPC) { root->fs_info->last_trans_log_full_commit = trans->transid; diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 309a57b9fc85..c7367ae5a3e6 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -155,6 +155,15 @@ static noinline int run_scheduled_bios(struct btrfs_device *device) unsigned long limit; unsigned long last_waited = 0; int force_reg = 0; + struct blk_plug plug; + + /* + * this function runs all the bios we've collected for + * a particular device. We don't want to wander off to + * another device without first sending all of these down. + * So, setup a plug here and finish it off before we return + */ + blk_start_plug(&plug); bdi = blk_get_backing_dev_info(device->bdev); fs_info = device->dev_root->fs_info; @@ -294,6 +303,7 @@ loop_lock: spin_unlock(&device->io_lock); done: + blk_finish_plug(&plug); return 0; } diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c index a5303b871b13..cfd660550ded 100644 --- a/fs/btrfs/xattr.c +++ b/fs/btrfs/xattr.c @@ -180,11 +180,10 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size) struct btrfs_path *path; struct extent_buffer *leaf; struct btrfs_dir_item *di; - int ret = 0, slot, advance; + int ret = 0, slot; size_t total_size = 0, size_left = size; unsigned long name_ptr; size_t name_len; - u32 nritems; /* * ok we want all objects associated with this id. @@ -204,34 +203,24 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size) ret = btrfs_search_slot(NULL, root, &key, path, 0, 0); if (ret < 0) goto err; - advance = 0; + while (1) { leaf = path->nodes[0]; - nritems = btrfs_header_nritems(leaf); slot = path->slots[0]; /* this is where we start walking through the path */ - if (advance || slot >= nritems) { + if (slot >= btrfs_header_nritems(leaf)) { /* * if we've reached the last slot in this leaf we need * to go to the next leaf and reset everything */ - if (slot >= nritems-1) { - ret = btrfs_next_leaf(root, path); - if (ret) - break; - leaf = path->nodes[0]; - nritems = btrfs_header_nritems(leaf); - slot = path->slots[0]; - } else { - /* - * just walking through the slots on this leaf - */ - slot++; - path->slots[0]++; - } + ret = btrfs_next_leaf(root, path); + if (ret < 0) + goto err; + else if (ret > 0) + break; + continue; } - advance = 1; btrfs_item_key_to_cpu(leaf, &found_key, slot); @@ -250,7 +239,7 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size) /* we are just looking for how big our buffer needs to be */ if (!size) - continue; + goto next; if (!buffer || (name_len + 1) > size_left) { ret = -ERANGE; @@ -263,6 +252,8 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size) size_left -= name_len + 1; buffer += name_len + 1; +next: + path->slots[0]++; } ret = total_size; diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index e159c529fd2b..38b8ab554924 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -775,6 +775,13 @@ get_more_pages: ci->i_truncate_seq, ci->i_truncate_size, &inode->i_mtime, true, 1, 0); + + if (!req) { + rc = -ENOMEM; + unlock_page(page); + break; + } + max_pages = req->r_num_pages; alloc_page_vec(fsc, req); diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 5323c330bbf3..2a5404c1c42f 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -819,7 +819,7 @@ int __ceph_caps_used(struct ceph_inode_info *ci) used |= CEPH_CAP_FILE_CACHE; if (ci->i_wr_ref) used |= CEPH_CAP_FILE_WR; - if (ci->i_wrbuffer_ref) + if (ci->i_wb_ref || ci->i_wrbuffer_ref) used |= CEPH_CAP_FILE_BUFFER; return used; } @@ -1331,10 +1331,11 @@ static void ceph_flush_snaps(struct ceph_inode_info *ci) } /* - * Mark caps dirty. If inode is newly dirty, add to the global dirty - * list. + * Mark caps dirty. If inode is newly dirty, return the dirty flags. + * Caller is then responsible for calling __mark_inode_dirty with the + * returned flags value. */ -void __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask) +int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask) { struct ceph_mds_client *mdsc = ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; @@ -1357,7 +1358,7 @@ void __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask) list_add(&ci->i_dirty_item, &mdsc->cap_dirty); spin_unlock(&mdsc->cap_dirty_lock); if (ci->i_flushing_caps == 0) { - igrab(inode); + ihold(inode); dirty |= I_DIRTY_SYNC; } } @@ -1365,9 +1366,8 @@ void __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask) if (((was | ci->i_flushing_caps) & CEPH_CAP_FILE_BUFFER) && (mask & CEPH_CAP_FILE_BUFFER)) dirty |= I_DIRTY_DATASYNC; - if (dirty) - __mark_inode_dirty(inode, dirty); __cap_delay_requeue(mdsc, ci); + return dirty; } /* @@ -1990,11 +1990,11 @@ static void __take_cap_refs(struct ceph_inode_info *ci, int got) if (got & CEPH_CAP_FILE_WR) ci->i_wr_ref++; if (got & CEPH_CAP_FILE_BUFFER) { - if (ci->i_wrbuffer_ref == 0) - igrab(&ci->vfs_inode); - ci->i_wrbuffer_ref++; - dout("__take_cap_refs %p wrbuffer %d -> %d (?)\n", - &ci->vfs_inode, ci->i_wrbuffer_ref-1, ci->i_wrbuffer_ref); + if (ci->i_wb_ref == 0) + ihold(&ci->vfs_inode); + ci->i_wb_ref++; + dout("__take_cap_refs %p wb %d -> %d (?)\n", + &ci->vfs_inode, ci->i_wb_ref-1, ci->i_wb_ref); } } @@ -2169,12 +2169,12 @@ void ceph_put_cap_refs(struct ceph_inode_info *ci, int had) if (--ci->i_rdcache_ref == 0) last++; if (had & CEPH_CAP_FILE_BUFFER) { - if (--ci->i_wrbuffer_ref == 0) { + if (--ci->i_wb_ref == 0) { last++; put++; } - dout("put_cap_refs %p wrbuffer %d -> %d (?)\n", - inode, ci->i_wrbuffer_ref+1, ci->i_wrbuffer_ref); + dout("put_cap_refs %p wb %d -> %d (?)\n", + inode, ci->i_wb_ref+1, ci->i_wb_ref); } if (had & CEPH_CAP_FILE_WR) if (--ci->i_wr_ref == 0) { diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 159b512d5a27..203252d88d9f 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -734,9 +734,12 @@ retry_snap: } } if (ret >= 0) { + int dirty; spin_lock(&inode->i_lock); - __ceph_mark_dirty_caps(ci, CEPH_CAP_FILE_WR); + dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_FILE_WR); spin_unlock(&inode->i_lock); + if (dirty) + __mark_inode_dirty(inode, dirty); } out: diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index b54c97da1c43..70b6a4839c38 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -355,6 +355,7 @@ struct inode *ceph_alloc_inode(struct super_block *sb) ci->i_rd_ref = 0; ci->i_rdcache_ref = 0; ci->i_wr_ref = 0; + ci->i_wb_ref = 0; ci->i_wrbuffer_ref = 0; ci->i_wrbuffer_ref_head = 0; ci->i_shared_gen = 0; @@ -1567,6 +1568,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr) int release = 0, dirtied = 0; int mask = 0; int err = 0; + int inode_dirty_flags = 0; if (ceph_snap(inode) != CEPH_NOSNAP) return -EROFS; @@ -1725,13 +1727,16 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr) dout("setattr %p ATTR_FILE ... hrm!\n", inode); if (dirtied) { - __ceph_mark_dirty_caps(ci, dirtied); + inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied); inode->i_ctime = CURRENT_TIME; } release &= issued; spin_unlock(&inode->i_lock); + if (inode_dirty_flags) + __mark_inode_dirty(inode, inode_dirty_flags); + if (mask) { req->r_inode = igrab(inode); req->r_inode_drop = release; diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index f60b07b0feb0..d0fae4ce9ba5 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -3304,8 +3304,8 @@ static void con_put(struct ceph_connection *con) { struct ceph_mds_session *s = con->private; + dout("mdsc con_put %p (%d)\n", s, atomic_read(&s->s_ref) - 1); ceph_put_mds_session(s); - dout("mdsc con_put %p (%d)\n", s, atomic_read(&s->s_ref)); } /* diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c index e86ec1155f8f..24067d68a554 100644 --- a/fs/ceph/snap.c +++ b/fs/ceph/snap.c @@ -206,7 +206,7 @@ void ceph_put_snap_realm(struct ceph_mds_client *mdsc, up_write(&mdsc->snap_rwsem); } else { spin_lock(&mdsc->snap_empty_lock); - list_add(&mdsc->snap_empty, &realm->empty_item); + list_add(&realm->empty_item, &mdsc->snap_empty); spin_unlock(&mdsc->snap_empty_lock); } } diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 619fe719968f..f5cabefa98dc 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -293,7 +293,7 @@ struct ceph_inode_info { /* held references to caps */ int i_pin_ref; - int i_rd_ref, i_rdcache_ref, i_wr_ref; + int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref; int i_wrbuffer_ref, i_wrbuffer_ref_head; u32 i_shared_gen; /* increment each time we get FILE_SHARED */ u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ @@ -506,7 +506,7 @@ static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) { return ci->i_dirty_caps | ci->i_flushing_caps; } -extern void __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask); +extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask); extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); extern int __ceph_caps_used(struct ceph_inode_info *ci); diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c index 8c9eba6ef9df..f2b628696180 100644 --- a/fs/ceph/xattr.c +++ b/fs/ceph/xattr.c @@ -703,6 +703,7 @@ int ceph_setxattr(struct dentry *dentry, const char *name, struct ceph_inode_xattr *xattr = NULL; int issued; int required_blob_size; + int dirty; if (ceph_snap(inode) != CEPH_NOSNAP) return -EROFS; @@ -763,11 +764,12 @@ retry: dout("setxattr %p issued %s\n", inode, ceph_cap_string(issued)); err = __set_xattr(ci, newname, name_len, newval, val_len, 1, 1, 1, &xattr); - __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL); + dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL); ci->i_xattrs.dirty = true; inode->i_ctime = CURRENT_TIME; spin_unlock(&inode->i_lock); - + if (dirty) + __mark_inode_dirty(inode, dirty); return err; do_sync: @@ -810,6 +812,7 @@ int ceph_removexattr(struct dentry *dentry, const char *name) struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode); int issued; int err; + int dirty; if (ceph_snap(inode) != CEPH_NOSNAP) return -EROFS; @@ -833,12 +836,13 @@ int ceph_removexattr(struct dentry *dentry, const char *name) goto do_sync; err = __remove_xattr_by_name(ceph_inode(inode), name); - __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL); + dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL); ci->i_xattrs.dirty = true; inode->i_ctime = CURRENT_TIME; spin_unlock(&inode->i_lock); - + if (dirty) + __mark_inode_dirty(inode, dirty); return err; do_sync: spin_unlock(&inode->i_lock); diff --git a/fs/cifs/README b/fs/cifs/README index fe1683590828..74ab165fc646 100644 --- a/fs/cifs/README +++ b/fs/cifs/README @@ -685,22 +685,6 @@ LinuxExtensionsEnabled If set to one then the client will attempt to support and want to map the uid and gid fields to values supplied at mount (rather than the actual values, then set this to zero. (default 1) -Experimental When set to 1 used to enable certain experimental - features (currently enables multipage writes - when signing is enabled, the multipage write - performance enhancement was disabled when - signing turned on in case buffer was modified - just before it was sent, also this flag will - be used to use the new experimental directory change - notification code). When set to 2 enables - an additional experimental feature, "raw ntlmssp" - session establishment support (which allows - specifying "sec=ntlmssp" on mount). The Linux cifs - module will use ntlmv2 authentication encapsulated - in "raw ntlmssp" (not using SPNEGO) when - "sec=ntlmssp" is specified on mount. - This support also requires building cifs with - the CONFIG_CIFS_EXPERIMENTAL configuration flag. These experimental features and tracing can be enabled by changing flags in /proc/fs/cifs (after the cifs module has been installed or built into the diff --git a/fs/cifs/cache.c b/fs/cifs/cache.c index e654dfd092c3..53d57a3fe427 100644 --- a/fs/cifs/cache.c +++ b/fs/cifs/cache.c @@ -50,7 +50,7 @@ void cifs_fscache_unregister(void) */ struct cifs_server_key { uint16_t family; /* address family */ - uint16_t port; /* IP port */ + __be16 port; /* IP port */ union { struct in_addr ipv4_addr; struct in6_addr ipv6_addr; diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c index 65829d32128c..30d01bc90855 100644 --- a/fs/cifs/cifs_debug.c +++ b/fs/cifs/cifs_debug.c @@ -423,7 +423,6 @@ static const struct file_operations cifs_lookup_cache_proc_fops; static const struct file_operations traceSMB_proc_fops; static const struct file_operations cifs_multiuser_mount_proc_fops; static const struct file_operations cifs_security_flags_proc_fops; -static const struct file_operations cifs_experimental_proc_fops; static const struct file_operations cifs_linux_ext_proc_fops; void @@ -441,8 +440,6 @@ cifs_proc_init(void) proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops); proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops); proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops); - proc_create("Experimental", 0, proc_fs_cifs, - &cifs_experimental_proc_fops); proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs, &cifs_linux_ext_proc_fops); proc_create("MultiuserMount", 0, proc_fs_cifs, @@ -469,7 +466,6 @@ cifs_proc_clean(void) remove_proc_entry("OplockEnabled", proc_fs_cifs); remove_proc_entry("SecurityFlags", proc_fs_cifs); remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs); - remove_proc_entry("Experimental", proc_fs_cifs); remove_proc_entry("LookupCacheEnabled", proc_fs_cifs); remove_proc_entry("fs/cifs", NULL); } @@ -550,45 +546,6 @@ static const struct file_operations cifs_oplock_proc_fops = { .write = cifs_oplock_proc_write, }; -static int cifs_experimental_proc_show(struct seq_file *m, void *v) -{ - seq_printf(m, "%d\n", experimEnabled); - return 0; -} - -static int cifs_experimental_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, cifs_experimental_proc_show, NULL); -} - -static ssize_t cifs_experimental_proc_write(struct file *file, - const char __user *buffer, size_t count, loff_t *ppos) -{ - char c; - int rc; - - rc = get_user(c, buffer); - if (rc) - return rc; - if (c == '0' || c == 'n' || c == 'N') - experimEnabled = 0; - else if (c == '1' || c == 'y' || c == 'Y') - experimEnabled = 1; - else if (c == '2') - experimEnabled = 2; - - return count; -} - -static const struct file_operations cifs_experimental_proc_fops = { - .owner = THIS_MODULE, - .open = cifs_experimental_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .write = cifs_experimental_proc_write, -}; - static int cifs_linux_ext_proc_show(struct seq_file *m, void *v) { seq_printf(m, "%d\n", linuxExtEnabled); diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c index 4dfba8283165..33d221394aca 100644 --- a/fs/cifs/cifs_spnego.c +++ b/fs/cifs/cifs_spnego.c @@ -113,7 +113,7 @@ cifs_get_spnego_key(struct cifsSesInfo *sesInfo) MAX_MECH_STR_LEN + UID_KEY_LEN + (sizeof(uid_t) * 2) + CREDUID_KEY_LEN + (sizeof(uid_t) * 2) + - USER_KEY_LEN + strlen(sesInfo->userName) + + USER_KEY_LEN + strlen(sesInfo->user_name) + PID_KEY_LEN + (sizeof(pid_t) * 2) + 1; spnego_key = ERR_PTR(-ENOMEM); @@ -153,7 +153,7 @@ cifs_get_spnego_key(struct cifsSesInfo *sesInfo) sprintf(dp, ";creduid=0x%x", sesInfo->cred_uid); dp = description + strlen(description); - sprintf(dp, ";user=%s", sesInfo->userName); + sprintf(dp, ";user=%s", sesInfo->user_name); dp = description + strlen(description); sprintf(dp, ";pid=0x%x", current->pid); diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c index fc0fd4fde306..23d43cde4306 100644 --- a/fs/cifs/cifs_unicode.c +++ b/fs/cifs/cifs_unicode.c @@ -90,7 +90,7 @@ cifs_mapchar(char *target, const __u16 src_char, const struct nls_table *cp, case UNI_COLON: *target = ':'; break; - case UNI_ASTERIK: + case UNI_ASTERISK: *target = '*'; break; case UNI_QUESTION: @@ -264,40 +264,40 @@ cifs_strndup_from_ucs(const char *src, const int maxlen, const bool is_unicode, * names are little endian 16 bit Unicode on the wire */ int -cifsConvertToUCS(__le16 *target, const char *source, int maxlen, +cifsConvertToUCS(__le16 *target, const char *source, int srclen, const struct nls_table *cp, int mapChars) { int i, j, charlen; - int len_remaining = maxlen; char src_char; - __u16 temp; + __le16 dst_char; + wchar_t tmp; if (!mapChars) return cifs_strtoUCS(target, source, PATH_MAX, cp); - for (i = 0, j = 0; i < maxlen; j++) { + for (i = 0, j = 0; i < srclen; j++) { src_char = source[i]; switch (src_char) { case 0: - put_unaligned_le16(0, &target[j]); + put_unaligned(0, &target[j]); goto ctoUCS_out; case ':': - temp = UNI_COLON; + dst_char = cpu_to_le16(UNI_COLON); break; case '*': - temp = UNI_ASTERIK; + dst_char = cpu_to_le16(UNI_ASTERISK); break; case '?': - temp = UNI_QUESTION; + dst_char = cpu_to_le16(UNI_QUESTION); break; case '<': - temp = UNI_LESSTHAN; + dst_char = cpu_to_le16(UNI_LESSTHAN); break; case '>': - temp = UNI_GRTRTHAN; + dst_char = cpu_to_le16(UNI_GRTRTHAN); break; case '|': - temp = UNI_PIPE; + dst_char = cpu_to_le16(UNI_PIPE); break; /* * FIXME: We can not handle remapping backslash (UNI_SLASH) @@ -305,17 +305,17 @@ cifsConvertToUCS(__le16 *target, const char *source, int maxlen, * as they use backslash as separator. */ default: - charlen = cp->char2uni(source+i, len_remaining, - &temp); + charlen = cp->char2uni(source + i, srclen - i, &tmp); + dst_char = cpu_to_le16(tmp); + /* * if no match, use question mark, which at least in * some cases serves as wild card */ if (charlen < 1) { - temp = 0x003f; + dst_char = cpu_to_le16(0x003f); charlen = 1; } - len_remaining -= charlen; /* * character may take more than one byte in the source * string, but will take exactly two bytes in the @@ -324,9 +324,8 @@ cifsConvertToUCS(__le16 *target, const char *source, int maxlen, i += charlen; continue; } - put_unaligned_le16(temp, &target[j]); + put_unaligned(dst_char, &target[j]); i++; /* move to next char in source string */ - len_remaining--; } ctoUCS_out: diff --git a/fs/cifs/cifs_unicode.h b/fs/cifs/cifs_unicode.h index 7fe6b52df507..644dd882a560 100644 --- a/fs/cifs/cifs_unicode.h +++ b/fs/cifs/cifs_unicode.h @@ -44,7 +44,7 @@ * reserved symbols (along with \ and /), otherwise illegal to store * in filenames in NTFS */ -#define UNI_ASTERIK (__u16) ('*' + 0xF000) +#define UNI_ASTERISK (__u16) ('*' + 0xF000) #define UNI_QUESTION (__u16) ('?' + 0xF000) #define UNI_COLON (__u16) (':' + 0xF000) #define UNI_GRTRTHAN (__u16) ('>' + 0xF000) diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index a51585f9852b..d1a016be73ba 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -30,12 +30,13 @@ #include <linux/ctype.h> #include <linux/random.h> -/* Calculate and return the CIFS signature based on the mac key and SMB PDU */ -/* the 16 byte signature must be allocated by the caller */ -/* Note we only use the 1st eight bytes */ -/* Note that the smb header signature field on input contains the - sequence number before this function is called */ - +/* + * Calculate and return the CIFS signature based on the mac key and SMB PDU. + * The 16 byte signature must be allocated by the caller. Note we only use the + * 1st eight bytes and that the smb header signature field on input contains + * the sequence number before this function is called. Also, this function + * should be called with the server->srv_mutex held. + */ static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu, struct TCP_Server_Info *server, char *signature) { @@ -209,8 +210,10 @@ int cifs_verify_signature(struct smb_hdr *cifs_pdu, cpu_to_le32(expected_sequence_number); cifs_pdu->Signature.Sequence.Reserved = 0; + mutex_lock(&server->srv_mutex); rc = cifs_calculate_signature(cifs_pdu, server, what_we_think_sig_should_be); + mutex_unlock(&server->srv_mutex); if (rc) return rc; @@ -469,15 +472,15 @@ static int calc_ntlmv2_hash(struct cifsSesInfo *ses, char *ntlmv2_hash, return rc; } - /* convert ses->userName to unicode and uppercase */ - len = strlen(ses->userName); + /* convert ses->user_name to unicode and uppercase */ + len = strlen(ses->user_name); user = kmalloc(2 + (len * 2), GFP_KERNEL); if (user == NULL) { cERROR(1, "calc_ntlmv2_hash: user mem alloc failure\n"); rc = -ENOMEM; goto calc_exit_2; } - len = cifs_strtoUCS((__le16 *)user, ses->userName, len, nls_cp); + len = cifs_strtoUCS((__le16 *)user, ses->user_name, len, nls_cp); UniStrupr(user); crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index f2970136d17d..5c412b33cd7c 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -53,7 +53,6 @@ int cifsFYI = 0; int cifsERROR = 1; int traceSMB = 0; unsigned int oplockEnabled = 1; -unsigned int experimEnabled = 0; unsigned int linuxExtEnabled = 1; unsigned int lookupCacheEnabled = 1; unsigned int multiuser_mount = 0; @@ -127,6 +126,7 @@ cifs_read_super(struct super_block *sb, void *data, kfree(cifs_sb); return rc; } + cifs_sb->bdi.ra_pages = default_backing_dev_info.ra_pages; #ifdef CONFIG_CIFS_DFS_UPCALL /* copy mount params to sb for use in submounts */ @@ -409,8 +409,8 @@ cifs_show_options(struct seq_file *s, struct vfsmount *m) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) seq_printf(s, ",multiuser"); - else if (tcon->ses->userName) - seq_printf(s, ",username=%s", tcon->ses->userName); + else if (tcon->ses->user_name) + seq_printf(s, ",username=%s", tcon->ses->user_name); if (tcon->ses->domainName) seq_printf(s, ",domain=%s", tcon->ses->domainName); diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 17afb0fbcaed..a5d1106fcbde 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -37,10 +37,9 @@ #define MAX_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1) #define MAX_SERVER_SIZE 15 -#define MAX_SHARE_SIZE 64 /* used to be 20, this should still be enough */ -#define MAX_USERNAME_SIZE 32 /* 32 is to allow for 15 char names + null - termination then *2 for unicode versions */ -#define MAX_PASSWORD_SIZE 512 /* max for windows seems to be 256 wide chars */ +#define MAX_SHARE_SIZE 80 +#define MAX_USERNAME_SIZE 256 /* reasonable maximum for current servers */ +#define MAX_PASSWORD_SIZE 512 /* max for windows seems to be 256 wide chars */ #define CIFS_MIN_RCV_POOL 4 @@ -92,7 +91,8 @@ enum statusEnum { CifsNew = 0, CifsGood, CifsExiting, - CifsNeedReconnect + CifsNeedReconnect, + CifsNeedNegotiate }; enum securityEnum { @@ -274,7 +274,7 @@ struct cifsSesInfo { int capabilities; char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for TCP names - will ipv6 and sctp addresses fit? */ - char userName[MAX_USERNAME_SIZE + 1]; + char *user_name; char *domainName; char *password; struct session_key auth_key; @@ -817,7 +817,6 @@ GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions have the uid/password or Kerberos credential or equivalent for current user */ GLOBAL_EXTERN unsigned int oplockEnabled; -GLOBAL_EXTERN unsigned int experimEnabled; GLOBAL_EXTERN unsigned int lookupCacheEnabled; GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent with more secure ntlmssp2 challenge/resp */ diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 2644a5d6cc67..df959bae6728 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -142,9 +142,9 @@ cifs_reconnect_tcon(struct cifsTconInfo *tcon, int smb_command) */ while (server->tcpStatus == CifsNeedReconnect) { wait_event_interruptible_timeout(server->response_q, - (server->tcpStatus == CifsGood), 10 * HZ); + (server->tcpStatus != CifsNeedReconnect), 10 * HZ); - /* is TCP session is reestablished now ?*/ + /* are we still trying to reconnect? */ if (server->tcpStatus != CifsNeedReconnect) break; @@ -729,7 +729,7 @@ CIFSSMBEcho(struct TCP_Server_Info *server) return rc; /* set up echo request */ - smb->hdr.Tid = cpu_to_le16(0xffff); + smb->hdr.Tid = 0xffff; smb->hdr.WordCount = 1; put_unaligned_le16(1, &smb->EchoCount); put_bcc_le(1, &smb->hdr); @@ -1884,10 +1884,10 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, __constant_cpu_to_le16(CIFS_WRLCK)) pLockData->fl_type = F_WRLCK; - pLockData->fl_start = parm_data->start; - pLockData->fl_end = parm_data->start + - parm_data->length - 1; - pLockData->fl_pid = parm_data->pid; + pLockData->fl_start = le64_to_cpu(parm_data->start); + pLockData->fl_end = pLockData->fl_start + + le64_to_cpu(parm_data->length) - 1; + pLockData->fl_pid = le32_to_cpu(parm_data->pid); } } diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 6e2b2addfc78..05f1dcf7d79a 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -199,8 +199,7 @@ cifs_reconnect(struct TCP_Server_Info *server) } spin_unlock(&GlobalMid_Lock); - while ((server->tcpStatus != CifsExiting) && - (server->tcpStatus != CifsGood)) { + while (server->tcpStatus == CifsNeedReconnect) { try_to_freeze(); /* we should try only the port we connected to before */ @@ -212,7 +211,7 @@ cifs_reconnect(struct TCP_Server_Info *server) atomic_inc(&tcpSesReconnectCount); spin_lock(&GlobalMid_Lock); if (server->tcpStatus != CifsExiting) - server->tcpStatus = CifsGood; + server->tcpStatus = CifsNeedNegotiate; spin_unlock(&GlobalMid_Lock); } } @@ -248,24 +247,24 @@ static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount); data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount); - remaining = total_data_size - data_in_this_rsp; - - if (remaining == 0) + if (total_data_size == data_in_this_rsp) return 0; - else if (remaining < 0) { + else if (total_data_size < data_in_this_rsp) { cFYI(1, "total data %d smaller than data in frame %d", total_data_size, data_in_this_rsp); return -EINVAL; - } else { - cFYI(1, "missing %d bytes from transact2, check next response", - remaining); - if (total_data_size > maxBufSize) { - cERROR(1, "TotalDataSize %d is over maximum buffer %d", - total_data_size, maxBufSize); - return -EINVAL; - } - return remaining; } + + remaining = total_data_size - data_in_this_rsp; + + cFYI(1, "missing %d bytes from transact2, check next response", + remaining); + if (total_data_size > maxBufSize) { + cERROR(1, "TotalDataSize %d is over maximum buffer %d", + total_data_size, maxBufSize); + return -EINVAL; + } + return remaining; } static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) @@ -275,7 +274,8 @@ static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) char *data_area_of_target; char *data_area_of_buf2; int remaining; - __u16 byte_count, total_data_size, total_in_buf, total_in_buf2; + unsigned int byte_count, total_in_buf; + __u16 total_data_size, total_in_buf2; total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount); @@ -288,7 +288,7 @@ static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) remaining = total_data_size - total_in_buf; if (remaining < 0) - return -EINVAL; + return -EPROTO; if (remaining == 0) /* nothing to do, ignore */ return 0; @@ -309,20 +309,29 @@ static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) data_area_of_target += total_in_buf; /* copy second buffer into end of first buffer */ - memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); total_in_buf += total_in_buf2; + /* is the result too big for the field? */ + if (total_in_buf > USHRT_MAX) + return -EPROTO; put_unaligned_le16(total_in_buf, &pSMBt->t2_rsp.DataCount); + + /* fix up the BCC */ byte_count = get_bcc_le(pTargetSMB); byte_count += total_in_buf2; + /* is the result too big for the field? */ + if (byte_count > USHRT_MAX) + return -EPROTO; put_bcc_le(byte_count, pTargetSMB); byte_count = pTargetSMB->smb_buf_length; byte_count += total_in_buf2; - - /* BB also add check that we are not beyond maximum buffer size */ - + /* don't allow buffer to overflow */ + if (byte_count > CIFSMaxBufSize) + return -ENOBUFS; pTargetSMB->smb_buf_length = byte_count; + memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); + if (remaining == total_in_buf2) { cFYI(1, "found the last secondary response"); return 0; /* we are done */ @@ -421,7 +430,7 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server) pdu_length = 4; /* enough to get RFC1001 header */ incomplete_rcv: - if (echo_retries > 0 && + if (echo_retries > 0 && server->tcpStatus == CifsGood && time_after(jiffies, server->lstrp + (echo_retries * SMB_ECHO_INTERVAL))) { cERROR(1, "Server %s has not responded in %d seconds. " @@ -608,59 +617,63 @@ incomplete_rcv: list_for_each_safe(tmp, tmp2, &server->pending_mid_q) { mid_entry = list_entry(tmp, struct mid_q_entry, qhead); - if ((mid_entry->mid == smb_buffer->Mid) && - (mid_entry->midState == MID_REQUEST_SUBMITTED) && - (mid_entry->command == smb_buffer->Command)) { - if (length == 0 && - check2ndT2(smb_buffer, server->maxBuf) > 0) { - /* We have a multipart transact2 resp */ - isMultiRsp = true; - if (mid_entry->resp_buf) { - /* merge response - fix up 1st*/ - if (coalesce_t2(smb_buffer, - mid_entry->resp_buf)) { - mid_entry->multiRsp = - true; - break; - } else { - /* all parts received */ - mid_entry->multiEnd = - true; - goto multi_t2_fnd; - } + if (mid_entry->mid != smb_buffer->Mid || + mid_entry->midState != MID_REQUEST_SUBMITTED || + mid_entry->command != smb_buffer->Command) { + mid_entry = NULL; + continue; + } + + if (length == 0 && + check2ndT2(smb_buffer, server->maxBuf) > 0) { + /* We have a multipart transact2 resp */ + isMultiRsp = true; + if (mid_entry->resp_buf) { + /* merge response - fix up 1st*/ + length = coalesce_t2(smb_buffer, + mid_entry->resp_buf); + if (length > 0) { + length = 0; + mid_entry->multiRsp = true; + break; } else { - if (!isLargeBuf) { - cERROR(1, "1st trans2 resp needs bigbuf"); - /* BB maybe we can fix this up, switch - to already allocated large buffer? */ - } else { - /* Have first buffer */ - mid_entry->resp_buf = - smb_buffer; - mid_entry->largeBuf = - true; - bigbuf = NULL; - } + /* all parts received or + * packet is malformed + */ + mid_entry->multiEnd = true; + goto multi_t2_fnd; + } + } else { + if (!isLargeBuf) { + /* + * FIXME: switch to already + * allocated largebuf? + */ + cERROR(1, "1st trans2 resp " + "needs bigbuf"); + } else { + /* Have first buffer */ + mid_entry->resp_buf = + smb_buffer; + mid_entry->largeBuf = true; + bigbuf = NULL; } - break; } - mid_entry->resp_buf = smb_buffer; - mid_entry->largeBuf = isLargeBuf; + break; + } + mid_entry->resp_buf = smb_buffer; + mid_entry->largeBuf = isLargeBuf; multi_t2_fnd: - if (length == 0) - mid_entry->midState = - MID_RESPONSE_RECEIVED; - else - mid_entry->midState = - MID_RESPONSE_MALFORMED; + if (length == 0) + mid_entry->midState = MID_RESPONSE_RECEIVED; + else + mid_entry->midState = MID_RESPONSE_MALFORMED; #ifdef CONFIG_CIFS_STATS2 - mid_entry->when_received = jiffies; + mid_entry->when_received = jiffies; #endif - list_del_init(&mid_entry->qhead); - mid_entry->callback(mid_entry); - break; - } - mid_entry = NULL; + list_del_init(&mid_entry->qhead); + mid_entry->callback(mid_entry); + break; } spin_unlock(&GlobalMid_Lock); @@ -808,8 +821,7 @@ static int cifs_parse_mount_options(char *options, const char *devname, struct smb_vol *vol) { - char *value; - char *data; + char *value, *data, *end; unsigned int temp_len, i, j; char separator[2]; short int override_uid = -1; @@ -852,6 +864,7 @@ cifs_parse_mount_options(char *options, const char *devname, if (!options) return 1; + end = options + strlen(options); if (strncmp(options, "sep=", 4) == 0) { if (options[4] != 0) { separator[0] = options[4]; @@ -881,7 +894,8 @@ cifs_parse_mount_options(char *options, const char *devname, /* null user, ie anonymous, authentication */ vol->nullauth = 1; } - if (strnlen(value, 200) < 200) { + if (strnlen(value, MAX_USERNAME_SIZE) < + MAX_USERNAME_SIZE) { vol->username = value; } else { printk(KERN_WARNING "CIFS: username too long\n"); @@ -916,6 +930,7 @@ cifs_parse_mount_options(char *options, const char *devname, the only illegal character in a password is null */ if ((value[temp_len] == 0) && + (value + temp_len < end) && (value[temp_len+1] == separator[0])) { /* reinsert comma */ value[temp_len] = separator[0]; @@ -1472,7 +1487,7 @@ srcip_matches(struct sockaddr *srcaddr, struct sockaddr *rhs) static bool match_port(struct TCP_Server_Info *server, struct sockaddr *addr) { - unsigned short int port, *sport; + __be16 port, *sport; switch (addr->sa_family) { case AF_INET: @@ -1765,6 +1780,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info) module_put(THIS_MODULE); goto out_err_crypto_release; } + tcp_ses->tcpStatus = CifsNeedNegotiate; /* thread spawned, put it on the list */ spin_lock(&cifs_tcp_ses_lock); @@ -1808,7 +1824,9 @@ cifs_find_smb_ses(struct TCP_Server_Info *server, struct smb_vol *vol) break; default: /* anything else takes username/password */ - if (strncmp(ses->userName, vol->username, + if (ses->user_name == NULL) + continue; + if (strncmp(ses->user_name, vol->username, MAX_USERNAME_SIZE)) continue; if (strlen(vol->username) != 0 && @@ -1851,6 +1869,8 @@ cifs_put_smb_ses(struct cifsSesInfo *ses) cifs_put_tcp_session(server); } +static bool warned_on_ntlm; /* globals init to false automatically */ + static struct cifsSesInfo * cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info) { @@ -1906,9 +1926,11 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info) else sprintf(ses->serverName, "%pI4", &addr->sin_addr); - if (volume_info->username) - strncpy(ses->userName, volume_info->username, - MAX_USERNAME_SIZE); + if (volume_info->username) { + ses->user_name = kstrdup(volume_info->username, GFP_KERNEL); + if (!ses->user_name) + goto get_ses_fail; + } /* volume_info->password freed at unmount */ if (volume_info->password) { @@ -1923,6 +1945,15 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info) } ses->cred_uid = volume_info->cred_uid; ses->linux_uid = volume_info->linux_uid; + + /* ntlmv2 is much stronger than ntlm security, and has been broadly + supported for many years, time to update default security mechanism */ + if ((volume_info->secFlg == 0) && warned_on_ntlm == false) { + warned_on_ntlm = true; + cERROR(1, "default security mechanism requested. The default " + "security mechanism will be upgraded from ntlm to " + "ntlmv2 in kernel release 2.6.41"); + } ses->overrideSecFlg = volume_info->secFlg; mutex_lock(&ses->session_mutex); @@ -2276,7 +2307,7 @@ static int generic_ip_connect(struct TCP_Server_Info *server) { int rc = 0; - unsigned short int sport; + __be16 sport; int slen, sfamily; struct socket *socket = server->ssocket; struct sockaddr *saddr; @@ -2361,7 +2392,7 @@ generic_ip_connect(struct TCP_Server_Info *server) static int ip_connect(struct TCP_Server_Info *server) { - unsigned short int *sport; + __be16 *sport; struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&server->dstaddr; struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr; @@ -2826,7 +2857,7 @@ try_mount_again: remote_path_check: /* check if a whole path (including prepath) is not remote */ - if (!rc && cifs_sb->prepathlen && tcon) { + if (!rc && tcon) { /* build_path_to_root works only when we have a valid tcon */ full_path = cifs_build_path_to_root(cifs_sb, tcon); if (full_path == NULL) { diff --git a/fs/cifs/file.c b/fs/cifs/file.c index c27d236738fc..faf59529e847 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -575,8 +575,10 @@ reopen_error_exit: int cifs_close(struct inode *inode, struct file *file) { - cifsFileInfo_put(file->private_data); - file->private_data = NULL; + if (file->private_data != NULL) { + cifsFileInfo_put(file->private_data); + file->private_data = NULL; + } /* return code from the ->release op is always ignored */ return 0; @@ -970,6 +972,9 @@ static ssize_t cifs_write(struct cifsFileInfo *open_file, total_written += bytes_written) { rc = -EAGAIN; while (rc == -EAGAIN) { + struct kvec iov[2]; + unsigned int len; + if (open_file->invalidHandle) { /* we could deadlock if we called filemap_fdatawait from here so tell @@ -979,31 +984,14 @@ static ssize_t cifs_write(struct cifsFileInfo *open_file, if (rc != 0) break; } - if (experimEnabled || (pTcon->ses->server && - ((pTcon->ses->server->secMode & - (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) - == 0))) { - struct kvec iov[2]; - unsigned int len; - - len = min((size_t)cifs_sb->wsize, - write_size - total_written); - /* iov[0] is reserved for smb header */ - iov[1].iov_base = (char *)write_data + - total_written; - iov[1].iov_len = len; - rc = CIFSSMBWrite2(xid, pTcon, - open_file->netfid, len, - *poffset, &bytes_written, - iov, 1, 0); - } else - rc = CIFSSMBWrite(xid, pTcon, - open_file->netfid, - min_t(const int, cifs_sb->wsize, - write_size - total_written), - *poffset, &bytes_written, - write_data + total_written, - NULL, 0); + + len = min((size_t)cifs_sb->wsize, + write_size - total_written); + /* iov[0] is reserved for smb header */ + iov[1].iov_base = (char *)write_data + total_written; + iov[1].iov_len = len; + rc = CIFSSMBWrite2(xid, pTcon, open_file->netfid, len, + *poffset, &bytes_written, iov, 1, 0); } if (rc || (bytes_written == 0)) { if (total_written) @@ -1240,12 +1228,6 @@ static int cifs_writepages(struct address_space *mapping, } tcon = tlink_tcon(open_file->tlink); - if (!experimEnabled && tcon->ses->server->secMode & - (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) { - cifsFileInfo_put(open_file); - kfree(iov); - return generic_writepages(mapping, wbc); - } cifsFileInfo_put(open_file); xid = GetXid(); @@ -1980,6 +1962,24 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size, return total_read; } +/* + * If the page is mmap'ed into a process' page tables, then we need to make + * sure that it doesn't change while being written back. + */ +static int +cifs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) +{ + struct page *page = vmf->page; + + lock_page(page); + return VM_FAULT_LOCKED; +} + +static struct vm_operations_struct cifs_file_vm_ops = { + .fault = filemap_fault, + .page_mkwrite = cifs_page_mkwrite, +}; + int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma) { int rc, xid; @@ -1991,6 +1991,8 @@ int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma) cifs_invalidate_mapping(inode); rc = generic_file_mmap(file, vma); + if (rc == 0) + vma->vm_ops = &cifs_file_vm_ops; FreeXid(xid); return rc; } @@ -2007,6 +2009,8 @@ int cifs_file_mmap(struct file *file, struct vm_area_struct *vma) return rc; } rc = generic_file_mmap(file, vma); + if (rc == 0) + vma->vm_ops = &cifs_file_vm_ops; FreeXid(xid); return rc; } diff --git a/fs/cifs/link.c b/fs/cifs/link.c index e8804d373404..ce417a9764a3 100644 --- a/fs/cifs/link.c +++ b/fs/cifs/link.c @@ -239,7 +239,7 @@ CIFSQueryMFSymLink(const int xid, struct cifsTconInfo *tcon, if (rc != 0) return rc; - if (file_info.EndOfFile != CIFS_MF_SYMLINK_FILE_SIZE) { + if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) { CIFSSMBClose(xid, tcon, netfid); /* it's not a symlink */ return -EINVAL; @@ -316,7 +316,7 @@ CIFSCheckMFSymlink(struct cifs_fattr *fattr, if (rc != 0) goto out; - if (file_info.EndOfFile != CIFS_MF_SYMLINK_FILE_SIZE) { + if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) { CIFSSMBClose(xid, pTcon, netfid); /* it's not a symlink */ goto out; diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index 2a930a752a78..0c684ae4c071 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -100,6 +100,7 @@ sesInfoFree(struct cifsSesInfo *buf_to_free) memset(buf_to_free->password, 0, strlen(buf_to_free->password)); kfree(buf_to_free->password); } + kfree(buf_to_free->user_name); kfree(buf_to_free->domainName); kfree(buf_to_free); } @@ -520,7 +521,7 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv) (struct smb_com_transaction_change_notify_rsp *)buf; struct file_notify_information *pnotify; __u32 data_offset = 0; - if (pSMBr->ByteCount > sizeof(struct file_notify_information)) { + if (get_bcc_le(buf) > sizeof(struct file_notify_information)) { data_offset = le32_to_cpu(pSMBr->DataOffset); pnotify = (struct file_notify_information *) diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c index 16765703131b..645114ad0a10 100644 --- a/fs/cifs/sess.c +++ b/fs/cifs/sess.c @@ -219,12 +219,12 @@ static void unicode_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses, bcc_ptr++; } */ /* copy user */ - if (ses->userName == NULL) { + if (ses->user_name == NULL) { /* null user mount */ *bcc_ptr = 0; *(bcc_ptr+1) = 0; } else { - bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->userName, + bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->user_name, MAX_USERNAME_SIZE, nls_cp); } bcc_ptr += 2 * bytes_ret; @@ -244,12 +244,11 @@ static void ascii_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses, /* copy user */ /* BB what about null user mounts - check that we do this BB */ /* copy user */ - if (ses->userName == NULL) { - /* BB what about null user mounts - check that we do this BB */ - } else { - strncpy(bcc_ptr, ses->userName, MAX_USERNAME_SIZE); - } - bcc_ptr += strnlen(ses->userName, MAX_USERNAME_SIZE); + if (ses->user_name != NULL) + strncpy(bcc_ptr, ses->user_name, MAX_USERNAME_SIZE); + /* else null user mount */ + + bcc_ptr += strnlen(ses->user_name, MAX_USERNAME_SIZE); *bcc_ptr = 0; bcc_ptr++; /* account for null termination */ @@ -277,7 +276,7 @@ static void ascii_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses, } static void -decode_unicode_ssetup(char **pbcc_area, __u16 bleft, struct cifsSesInfo *ses, +decode_unicode_ssetup(char **pbcc_area, int bleft, struct cifsSesInfo *ses, const struct nls_table *nls_cp) { int len; @@ -285,19 +284,6 @@ decode_unicode_ssetup(char **pbcc_area, __u16 bleft, struct cifsSesInfo *ses, cFYI(1, "bleft %d", bleft); - /* - * Windows servers do not always double null terminate their final - * Unicode string. Check to see if there are an uneven number of bytes - * left. If so, then add an extra NULL pad byte to the end of the - * response. - * - * See section 2.7.2 in "Implementing CIFS" for details - */ - if (bleft % 2) { - data[bleft] = 0; - ++bleft; - } - kfree(ses->serverOS); ses->serverOS = cifs_strndup_from_ucs(data, bleft, true, nls_cp); cFYI(1, "serverOS=%s", ses->serverOS); @@ -405,8 +391,8 @@ static int decode_ntlmssp_challenge(char *bcc_ptr, int blob_len, /* BB spec says that if AvId field of MsvAvTimestamp is populated then we must set the MIC field of the AUTHENTICATE_MESSAGE */ ses->ntlmssp->server_flags = le32_to_cpu(pblob->NegotiateFlags); - tioffset = cpu_to_le16(pblob->TargetInfoArray.BufferOffset); - tilen = cpu_to_le16(pblob->TargetInfoArray.Length); + tioffset = le32_to_cpu(pblob->TargetInfoArray.BufferOffset); + tilen = le16_to_cpu(pblob->TargetInfoArray.Length); if (tilen) { ses->auth_key.response = kmalloc(tilen, GFP_KERNEL); if (!ses->auth_key.response) { @@ -523,14 +509,14 @@ static int build_ntlmssp_auth_blob(unsigned char *pbuffer, tmp += len; } - if (ses->userName == NULL) { + if (ses->user_name == NULL) { sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer); sec_blob->UserName.Length = 0; sec_blob->UserName.MaximumLength = 0; tmp += 2; } else { int len; - len = cifs_strtoUCS((__le16 *)tmp, ses->userName, + len = cifs_strtoUCS((__le16 *)tmp, ses->user_name, MAX_USERNAME_SIZE, nls_cp); len *= 2; /* unicode is 2 bytes each */ sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer); @@ -930,7 +916,9 @@ ssetup_ntlmssp_authenticate: } /* BB check if Unicode and decode strings */ - if (smb_buf->Flags2 & SMBFLG2_UNICODE) { + if (bytes_remaining == 0) { + /* no string area to decode, do nothing */ + } else if (smb_buf->Flags2 & SMBFLG2_UNICODE) { /* unicode string area must be word-aligned */ if (((unsigned long) bcc_ptr - (unsigned long) smb_buf) % 2) { ++bcc_ptr; diff --git a/fs/dcache.c b/fs/dcache.c index ad25c4cec7d5..22a0ef41bad1 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -99,12 +99,9 @@ static struct kmem_cache *dentry_cache __read_mostly; static unsigned int d_hash_mask __read_mostly; static unsigned int d_hash_shift __read_mostly; -struct dcache_hash_bucket { - struct hlist_bl_head head; -}; -static struct dcache_hash_bucket *dentry_hashtable __read_mostly; +static struct hlist_bl_head *dentry_hashtable __read_mostly; -static inline struct dcache_hash_bucket *d_hash(struct dentry *parent, +static inline struct hlist_bl_head *d_hash(struct dentry *parent, unsigned long hash) { hash += ((unsigned long) parent ^ GOLDEN_RATIO_PRIME) / L1_CACHE_BYTES; @@ -112,16 +109,6 @@ static inline struct dcache_hash_bucket *d_hash(struct dentry *parent, return dentry_hashtable + (hash & D_HASHMASK); } -static inline void spin_lock_bucket(struct dcache_hash_bucket *b) -{ - bit_spin_lock(0, (unsigned long *)&b->head.first); -} - -static inline void spin_unlock_bucket(struct dcache_hash_bucket *b) -{ - __bit_spin_unlock(0, (unsigned long *)&b->head.first); -} - /* Statistics gathering. */ struct dentry_stat_t dentry_stat = { .age_limit = 45, @@ -167,8 +154,8 @@ static void d_free(struct dentry *dentry) if (dentry->d_op && dentry->d_op->d_release) dentry->d_op->d_release(dentry); - /* if dentry was never inserted into hash, immediate free is OK */ - if (hlist_bl_unhashed(&dentry->d_hash)) + /* if dentry was never visible to RCU, immediate free is OK */ + if (!(dentry->d_flags & DCACHE_RCUACCESS)) __d_free(&dentry->d_u.d_rcu); else call_rcu(&dentry->d_u.d_rcu, __d_free); @@ -330,28 +317,19 @@ static struct dentry *d_kill(struct dentry *dentry, struct dentry *parent) */ void __d_drop(struct dentry *dentry) { - if (!(dentry->d_flags & DCACHE_UNHASHED)) { - if (unlikely(dentry->d_flags & DCACHE_DISCONNECTED)) { - bit_spin_lock(0, - (unsigned long *)&dentry->d_sb->s_anon.first); - dentry->d_flags |= DCACHE_UNHASHED; - hlist_bl_del_init(&dentry->d_hash); - __bit_spin_unlock(0, - (unsigned long *)&dentry->d_sb->s_anon.first); - } else { - struct dcache_hash_bucket *b; + if (!d_unhashed(dentry)) { + struct hlist_bl_head *b; + if (unlikely(dentry->d_flags & DCACHE_DISCONNECTED)) + b = &dentry->d_sb->s_anon; + else b = d_hash(dentry->d_parent, dentry->d_name.hash); - spin_lock_bucket(b); - /* - * We may not actually need to put DCACHE_UNHASHED - * manipulations under the hash lock, but follow - * the principle of least surprise. - */ - dentry->d_flags |= DCACHE_UNHASHED; - hlist_bl_del_rcu(&dentry->d_hash); - spin_unlock_bucket(b); - dentry_rcuwalk_barrier(dentry); - } + + hlist_bl_lock(b); + __hlist_bl_del(&dentry->d_hash); + dentry->d_hash.pprev = NULL; + hlist_bl_unlock(b); + + dentry_rcuwalk_barrier(dentry); } } EXPORT_SYMBOL(__d_drop); @@ -1304,7 +1282,7 @@ struct dentry *d_alloc(struct dentry * parent, const struct qstr *name) dname[name->len] = 0; dentry->d_count = 1; - dentry->d_flags = DCACHE_UNHASHED; + dentry->d_flags = 0; spin_lock_init(&dentry->d_lock); seqcount_init(&dentry->d_seq); dentry->d_inode = NULL; @@ -1606,10 +1584,9 @@ struct dentry *d_obtain_alias(struct inode *inode) tmp->d_inode = inode; tmp->d_flags |= DCACHE_DISCONNECTED; list_add(&tmp->d_alias, &inode->i_dentry); - bit_spin_lock(0, (unsigned long *)&tmp->d_sb->s_anon.first); - tmp->d_flags &= ~DCACHE_UNHASHED; + hlist_bl_lock(&tmp->d_sb->s_anon); hlist_bl_add_head(&tmp->d_hash, &tmp->d_sb->s_anon); - __bit_spin_unlock(0, (unsigned long *)&tmp->d_sb->s_anon.first); + hlist_bl_unlock(&tmp->d_sb->s_anon); spin_unlock(&tmp->d_lock); spin_unlock(&inode->i_lock); security_d_instantiate(tmp, inode); @@ -1789,7 +1766,7 @@ struct dentry *__d_lookup_rcu(struct dentry *parent, struct qstr *name, unsigned int len = name->len; unsigned int hash = name->hash; const unsigned char *str = name->name; - struct dcache_hash_bucket *b = d_hash(parent, hash); + struct hlist_bl_head *b = d_hash(parent, hash); struct hlist_bl_node *node; struct dentry *dentry; @@ -1813,7 +1790,7 @@ struct dentry *__d_lookup_rcu(struct dentry *parent, struct qstr *name, * * See Documentation/filesystems/path-lookup.txt for more details. */ - hlist_bl_for_each_entry_rcu(dentry, node, &b->head, d_hash) { + hlist_bl_for_each_entry_rcu(dentry, node, b, d_hash) { struct inode *i; const char *tname; int tlen; @@ -1908,7 +1885,7 @@ struct dentry *__d_lookup(struct dentry *parent, struct qstr *name) unsigned int len = name->len; unsigned int hash = name->hash; const unsigned char *str = name->name; - struct dcache_hash_bucket *b = d_hash(parent, hash); + struct hlist_bl_head *b = d_hash(parent, hash); struct hlist_bl_node *node; struct dentry *found = NULL; struct dentry *dentry; @@ -1935,7 +1912,7 @@ struct dentry *__d_lookup(struct dentry *parent, struct qstr *name) */ rcu_read_lock(); - hlist_bl_for_each_entry_rcu(dentry, node, &b->head, d_hash) { + hlist_bl_for_each_entry_rcu(dentry, node, b, d_hash) { const char *tname; int tlen; @@ -2086,13 +2063,13 @@ again: } EXPORT_SYMBOL(d_delete); -static void __d_rehash(struct dentry * entry, struct dcache_hash_bucket *b) +static void __d_rehash(struct dentry * entry, struct hlist_bl_head *b) { BUG_ON(!d_unhashed(entry)); - spin_lock_bucket(b); - entry->d_flags &= ~DCACHE_UNHASHED; - hlist_bl_add_head_rcu(&entry->d_hash, &b->head); - spin_unlock_bucket(b); + hlist_bl_lock(b); + entry->d_flags |= DCACHE_RCUACCESS; + hlist_bl_add_head_rcu(&entry->d_hash, b); + hlist_bl_unlock(b); } static void _d_rehash(struct dentry * entry) @@ -2131,7 +2108,7 @@ EXPORT_SYMBOL(d_rehash); */ void dentry_update_name_case(struct dentry *dentry, struct qstr *name) { - BUG_ON(!mutex_is_locked(&dentry->d_inode->i_mutex)); + BUG_ON(!mutex_is_locked(&dentry->d_parent->d_inode->i_mutex)); BUG_ON(dentry->d_name.len != name->len); /* d_lookup gives this */ spin_lock(&dentry->d_lock); @@ -3025,7 +3002,7 @@ static void __init dcache_init_early(void) dentry_hashtable = alloc_large_system_hash("Dentry cache", - sizeof(struct dcache_hash_bucket), + sizeof(struct hlist_bl_head), dhash_entries, 13, HASH_EARLY, @@ -3034,7 +3011,7 @@ static void __init dcache_init_early(void) 0); for (loop = 0; loop < (1 << d_hash_shift); loop++) - INIT_HLIST_BL_HEAD(&dentry_hashtable[loop].head); + INIT_HLIST_BL_HEAD(dentry_hashtable + loop); } static void __init dcache_init(void) @@ -3057,7 +3034,7 @@ static void __init dcache_init(void) dentry_hashtable = alloc_large_system_hash("Dentry cache", - sizeof(struct dcache_hash_bucket), + sizeof(struct hlist_bl_head), dhash_entries, 13, 0, @@ -3066,7 +3043,7 @@ static void __init dcache_init(void) 0); for (loop = 0; loop < (1 << d_hash_shift); loop++) - INIT_HLIST_BL_HEAD(&dentry_hashtable[loop].head); + INIT_HLIST_BL_HEAD(dentry_hashtable + loop); } /* SLAB cache for __getname() consumers */ diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c index d2a70a4561f9..b8d5c8091024 100644 --- a/fs/ecryptfs/crypto.c +++ b/fs/ecryptfs/crypto.c @@ -1452,6 +1452,25 @@ static void set_default_header_data(struct ecryptfs_crypt_stat *crypt_stat) crypt_stat->metadata_size = ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE; } +void ecryptfs_i_size_init(const char *page_virt, struct inode *inode) +{ + struct ecryptfs_mount_crypt_stat *mount_crypt_stat; + struct ecryptfs_crypt_stat *crypt_stat; + u64 file_size; + + crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat; + mount_crypt_stat = + &ecryptfs_superblock_to_private(inode->i_sb)->mount_crypt_stat; + if (mount_crypt_stat->flags & ECRYPTFS_ENCRYPTED_VIEW_ENABLED) { + file_size = i_size_read(ecryptfs_inode_to_lower(inode)); + if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) + file_size += crypt_stat->metadata_size; + } else + file_size = get_unaligned_be64(page_virt); + i_size_write(inode, (loff_t)file_size); + crypt_stat->flags |= ECRYPTFS_I_SIZE_INITIALIZED; +} + /** * ecryptfs_read_headers_virt * @page_virt: The virtual address into which to read the headers @@ -1482,6 +1501,8 @@ static int ecryptfs_read_headers_virt(char *page_virt, rc = -EINVAL; goto out; } + if (!(crypt_stat->flags & ECRYPTFS_I_SIZE_INITIALIZED)) + ecryptfs_i_size_init(page_virt, ecryptfs_dentry->d_inode); offset += MAGIC_ECRYPTFS_MARKER_SIZE_BYTES; rc = ecryptfs_process_flags(crypt_stat, (page_virt + offset), &bytes_read); diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h index bd3cafd0949d..e70282775e2c 100644 --- a/fs/ecryptfs/ecryptfs_kernel.h +++ b/fs/ecryptfs/ecryptfs_kernel.h @@ -269,6 +269,7 @@ struct ecryptfs_crypt_stat { #define ECRYPTFS_ENCFN_USE_MOUNT_FNEK 0x00000800 #define ECRYPTFS_ENCFN_USE_FEK 0x00001000 #define ECRYPTFS_UNLINK_SIGS 0x00002000 +#define ECRYPTFS_I_SIZE_INITIALIZED 0x00004000 u32 flags; unsigned int file_version; size_t iv_bytes; @@ -295,6 +296,8 @@ struct ecryptfs_crypt_stat { struct ecryptfs_inode_info { struct inode vfs_inode; struct inode *wii_inode; + struct mutex lower_file_mutex; + atomic_t lower_file_count; struct file *lower_file; struct ecryptfs_crypt_stat crypt_stat; }; @@ -626,6 +629,7 @@ struct ecryptfs_open_req { int ecryptfs_interpose(struct dentry *hidden_dentry, struct dentry *this_dentry, struct super_block *sb, u32 flags); +void ecryptfs_i_size_init(const char *page_virt, struct inode *inode); int ecryptfs_lookup_and_interpose_lower(struct dentry *ecryptfs_dentry, struct dentry *lower_dentry, struct inode *ecryptfs_dir_inode); @@ -757,7 +761,8 @@ int ecryptfs_privileged_open(struct file **lower_file, struct dentry *lower_dentry, struct vfsmount *lower_mnt, const struct cred *cred); -int ecryptfs_init_persistent_file(struct dentry *ecryptfs_dentry); +int ecryptfs_get_lower_file(struct dentry *ecryptfs_dentry); +void ecryptfs_put_lower_file(struct inode *inode); int ecryptfs_write_tag_70_packet(char *dest, size_t *remaining_bytes, size_t *packet_size, diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index cedc913d11ba..566e5472f78c 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -191,10 +191,10 @@ static int ecryptfs_open(struct inode *inode, struct file *file) | ECRYPTFS_ENCRYPTED); } mutex_unlock(&crypt_stat->cs_mutex); - rc = ecryptfs_init_persistent_file(ecryptfs_dentry); + rc = ecryptfs_get_lower_file(ecryptfs_dentry); if (rc) { printk(KERN_ERR "%s: Error attempting to initialize " - "the persistent file for the dentry with name " + "the lower file for the dentry with name " "[%s]; rc = [%d]\n", __func__, ecryptfs_dentry->d_name.name, rc); goto out_free; @@ -202,9 +202,9 @@ static int ecryptfs_open(struct inode *inode, struct file *file) if ((ecryptfs_inode_to_private(inode)->lower_file->f_flags & O_ACCMODE) == O_RDONLY && (file->f_flags & O_ACCMODE) != O_RDONLY) { rc = -EPERM; - printk(KERN_WARNING "%s: Lower persistent file is RO; eCryptfs " + printk(KERN_WARNING "%s: Lower file is RO; eCryptfs " "file must hence be opened RO\n", __func__); - goto out_free; + goto out_put; } ecryptfs_set_file_lower( file, ecryptfs_inode_to_private(inode)->lower_file); @@ -232,10 +232,11 @@ static int ecryptfs_open(struct inode *inode, struct file *file) "Plaintext passthrough mode is not " "enabled; returning -EIO\n"); mutex_unlock(&crypt_stat->cs_mutex); - goto out_free; + goto out_put; } rc = 0; - crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED); + crypt_stat->flags &= ~(ECRYPTFS_I_SIZE_INITIALIZED + | ECRYPTFS_ENCRYPTED); mutex_unlock(&crypt_stat->cs_mutex); goto out; } @@ -245,6 +246,8 @@ static int ecryptfs_open(struct inode *inode, struct file *file) "[0x%.16lx] size: [0x%.16llx]\n", inode, inode->i_ino, (unsigned long long)i_size_read(inode)); goto out; +out_put: + ecryptfs_put_lower_file(inode); out_free: kmem_cache_free(ecryptfs_file_info_cache, ecryptfs_file_to_private(file)); @@ -254,17 +257,13 @@ out: static int ecryptfs_flush(struct file *file, fl_owner_t td) { - int rc = 0; - struct file *lower_file = NULL; - - lower_file = ecryptfs_file_to_lower(file); - if (lower_file->f_op && lower_file->f_op->flush) - rc = lower_file->f_op->flush(lower_file, td); - return rc; + return file->f_mode & FMODE_WRITE + ? filemap_write_and_wait(file->f_mapping) : 0; } static int ecryptfs_release(struct inode *inode, struct file *file) { + ecryptfs_put_lower_file(inode); kmem_cache_free(ecryptfs_file_info_cache, ecryptfs_file_to_private(file)); return 0; diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index f99051b7adab..4d4cc6a90cd5 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -168,19 +168,18 @@ static int ecryptfs_initialize_file(struct dentry *ecryptfs_dentry) "context; rc = [%d]\n", rc); goto out; } - rc = ecryptfs_init_persistent_file(ecryptfs_dentry); + rc = ecryptfs_get_lower_file(ecryptfs_dentry); if (rc) { printk(KERN_ERR "%s: Error attempting to initialize " - "the persistent file for the dentry with name " + "the lower file for the dentry with name " "[%s]; rc = [%d]\n", __func__, ecryptfs_dentry->d_name.name, rc); goto out; } rc = ecryptfs_write_metadata(ecryptfs_dentry); - if (rc) { + if (rc) printk(KERN_ERR "Error writing headers; rc = [%d]\n", rc); - goto out; - } + ecryptfs_put_lower_file(ecryptfs_dentry->d_inode); out: return rc; } @@ -226,11 +225,9 @@ int ecryptfs_lookup_and_interpose_lower(struct dentry *ecryptfs_dentry, struct dentry *lower_dir_dentry; struct vfsmount *lower_mnt; struct inode *lower_inode; - struct ecryptfs_mount_crypt_stat *mount_crypt_stat; struct ecryptfs_crypt_stat *crypt_stat; char *page_virt = NULL; - u64 file_size; - int rc = 0; + int put_lower = 0, rc = 0; lower_dir_dentry = lower_dentry->d_parent; lower_mnt = mntget(ecryptfs_dentry_to_lower_mnt( @@ -277,14 +274,15 @@ int ecryptfs_lookup_and_interpose_lower(struct dentry *ecryptfs_dentry, rc = -ENOMEM; goto out; } - rc = ecryptfs_init_persistent_file(ecryptfs_dentry); + rc = ecryptfs_get_lower_file(ecryptfs_dentry); if (rc) { printk(KERN_ERR "%s: Error attempting to initialize " - "the persistent file for the dentry with name " + "the lower file for the dentry with name " "[%s]; rc = [%d]\n", __func__, ecryptfs_dentry->d_name.name, rc); goto out_free_kmem; } + put_lower = 1; crypt_stat = &ecryptfs_inode_to_private( ecryptfs_dentry->d_inode)->crypt_stat; /* TODO: lock for crypt_stat comparison */ @@ -302,18 +300,7 @@ int ecryptfs_lookup_and_interpose_lower(struct dentry *ecryptfs_dentry, } crypt_stat->flags |= ECRYPTFS_METADATA_IN_XATTR; } - mount_crypt_stat = &ecryptfs_superblock_to_private( - ecryptfs_dentry->d_sb)->mount_crypt_stat; - if (mount_crypt_stat->flags & ECRYPTFS_ENCRYPTED_VIEW_ENABLED) { - if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR) - file_size = (crypt_stat->metadata_size - + i_size_read(lower_dentry->d_inode)); - else - file_size = i_size_read(lower_dentry->d_inode); - } else { - file_size = get_unaligned_be64(page_virt); - } - i_size_write(ecryptfs_dentry->d_inode, (loff_t)file_size); + ecryptfs_i_size_init(page_virt, ecryptfs_dentry->d_inode); out_free_kmem: kmem_cache_free(ecryptfs_header_cache_2, page_virt); goto out; @@ -322,6 +309,8 @@ out_put: mntput(lower_mnt); d_drop(ecryptfs_dentry); out: + if (put_lower) + ecryptfs_put_lower_file(ecryptfs_dentry->d_inode); return rc; } @@ -538,8 +527,6 @@ static int ecryptfs_rmdir(struct inode *dir, struct dentry *dentry) dget(lower_dentry); rc = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry); dput(lower_dentry); - if (!rc) - d_delete(lower_dentry); fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode); dir->i_nlink = lower_dir_dentry->d_inode->i_nlink; unlock_dir(lower_dir_dentry); @@ -610,8 +597,8 @@ ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry, fsstack_copy_attr_all(old_dir, lower_old_dir_dentry->d_inode); out_lock: unlock_rename(lower_old_dir_dentry, lower_new_dir_dentry); - dput(lower_new_dentry->d_parent); - dput(lower_old_dentry->d_parent); + dput(lower_new_dir_dentry); + dput(lower_old_dir_dentry); dput(lower_new_dentry); dput(lower_old_dentry); return rc; @@ -759,8 +746,11 @@ static int truncate_upper(struct dentry *dentry, struct iattr *ia, if (unlikely((ia->ia_size == i_size))) { lower_ia->ia_valid &= ~ATTR_SIZE; - goto out; + return 0; } + rc = ecryptfs_get_lower_file(dentry); + if (rc) + return rc; crypt_stat = &ecryptfs_inode_to_private(dentry->d_inode)->crypt_stat; /* Switch on growing or shrinking file */ if (ia->ia_size > i_size) { @@ -838,6 +828,7 @@ static int truncate_upper(struct dentry *dentry, struct iattr *ia, lower_ia->ia_valid &= ~ATTR_SIZE; } out: + ecryptfs_put_lower_file(inode); return rc; } @@ -913,7 +904,13 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia) mount_crypt_stat = &ecryptfs_superblock_to_private( dentry->d_sb)->mount_crypt_stat; + rc = ecryptfs_get_lower_file(dentry); + if (rc) { + mutex_unlock(&crypt_stat->cs_mutex); + goto out; + } rc = ecryptfs_read_metadata(dentry); + ecryptfs_put_lower_file(inode); if (rc) { if (!(mount_crypt_stat->flags & ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED)) { @@ -927,10 +924,17 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia) goto out; } rc = 0; - crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED); + crypt_stat->flags &= ~(ECRYPTFS_I_SIZE_INITIALIZED + | ECRYPTFS_ENCRYPTED); } } mutex_unlock(&crypt_stat->cs_mutex); + if (S_ISREG(inode->i_mode)) { + rc = filemap_write_and_wait(inode->i_mapping); + if (rc) + goto out; + fsstack_copy_attr_all(inode, lower_inode); + } memcpy(&lower_ia, ia, sizeof(lower_ia)); if (ia->ia_valid & ATTR_FILE) lower_ia.ia_file = ecryptfs_file_to_lower(ia->ia_file); diff --git a/fs/ecryptfs/kthread.c b/fs/ecryptfs/kthread.c index 0851ab6980f5..69f994a7d524 100644 --- a/fs/ecryptfs/kthread.c +++ b/fs/ecryptfs/kthread.c @@ -44,7 +44,7 @@ static struct task_struct *ecryptfs_kthread; * @ignored: ignored * * The eCryptfs kernel thread that has the responsibility of getting - * the lower persistent file with RW permissions. + * the lower file with RW permissions. * * Returns zero on success; non-zero otherwise */ @@ -141,8 +141,8 @@ int ecryptfs_privileged_open(struct file **lower_file, int rc = 0; /* Corresponding dput() and mntput() are done when the - * persistent file is fput() when the eCryptfs inode is - * destroyed. */ + * lower file is fput() when all eCryptfs files for the inode are + * released. */ dget(lower_dentry); mntget(lower_mnt); flags |= IS_RDONLY(lower_dentry->d_inode) ? O_RDONLY : O_RDWR; diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c index fdb2eb0ad09e..89b93389af8e 100644 --- a/fs/ecryptfs/main.c +++ b/fs/ecryptfs/main.c @@ -96,7 +96,7 @@ void __ecryptfs_printk(const char *fmt, ...) } /** - * ecryptfs_init_persistent_file + * ecryptfs_init_lower_file * @ecryptfs_dentry: Fully initialized eCryptfs dentry object, with * the lower dentry and the lower mount set * @@ -104,42 +104,70 @@ void __ecryptfs_printk(const char *fmt, ...) * inode. All I/O operations to the lower inode occur through that * file. When the first eCryptfs dentry that interposes with the first * lower dentry for that inode is created, this function creates the - * persistent file struct and associates it with the eCryptfs - * inode. When the eCryptfs inode is destroyed, the file is closed. + * lower file struct and associates it with the eCryptfs + * inode. When all eCryptfs files associated with the inode are released, the + * file is closed. * - * The persistent file will be opened with read/write permissions, if + * The lower file will be opened with read/write permissions, if * possible. Otherwise, it is opened read-only. * - * This function does nothing if a lower persistent file is already + * This function does nothing if a lower file is already * associated with the eCryptfs inode. * * Returns zero on success; non-zero otherwise */ -int ecryptfs_init_persistent_file(struct dentry *ecryptfs_dentry) +static int ecryptfs_init_lower_file(struct dentry *dentry, + struct file **lower_file) { const struct cred *cred = current_cred(); - struct ecryptfs_inode_info *inode_info = - ecryptfs_inode_to_private(ecryptfs_dentry->d_inode); - int rc = 0; + struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry); + struct vfsmount *lower_mnt = ecryptfs_dentry_to_lower_mnt(dentry); + int rc; - if (!inode_info->lower_file) { - struct dentry *lower_dentry; - struct vfsmount *lower_mnt = - ecryptfs_dentry_to_lower_mnt(ecryptfs_dentry); + rc = ecryptfs_privileged_open(lower_file, lower_dentry, lower_mnt, + cred); + if (rc) { + printk(KERN_ERR "Error opening lower file " + "for lower_dentry [0x%p] and lower_mnt [0x%p]; " + "rc = [%d]\n", lower_dentry, lower_mnt, rc); + (*lower_file) = NULL; + } + return rc; +} - lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry); - rc = ecryptfs_privileged_open(&inode_info->lower_file, - lower_dentry, lower_mnt, cred); - if (rc) { - printk(KERN_ERR "Error opening lower persistent file " - "for lower_dentry [0x%p] and lower_mnt [0x%p]; " - "rc = [%d]\n", lower_dentry, lower_mnt, rc); - inode_info->lower_file = NULL; - } +int ecryptfs_get_lower_file(struct dentry *dentry) +{ + struct ecryptfs_inode_info *inode_info = + ecryptfs_inode_to_private(dentry->d_inode); + int count, rc = 0; + + mutex_lock(&inode_info->lower_file_mutex); + count = atomic_inc_return(&inode_info->lower_file_count); + if (WARN_ON_ONCE(count < 1)) + rc = -EINVAL; + else if (count == 1) { + rc = ecryptfs_init_lower_file(dentry, + &inode_info->lower_file); + if (rc) + atomic_set(&inode_info->lower_file_count, 0); } + mutex_unlock(&inode_info->lower_file_mutex); return rc; } +void ecryptfs_put_lower_file(struct inode *inode) +{ + struct ecryptfs_inode_info *inode_info; + + inode_info = ecryptfs_inode_to_private(inode); + if (atomic_dec_and_mutex_lock(&inode_info->lower_file_count, + &inode_info->lower_file_mutex)) { + fput(inode_info->lower_file); + inode_info->lower_file = NULL; + mutex_unlock(&inode_info->lower_file_mutex); + } +} + static struct inode *ecryptfs_get_inode(struct inode *lower_inode, struct super_block *sb) { diff --git a/fs/ecryptfs/super.c b/fs/ecryptfs/super.c index bacc882e1ae4..245b517bf1b6 100644 --- a/fs/ecryptfs/super.c +++ b/fs/ecryptfs/super.c @@ -55,6 +55,8 @@ static struct inode *ecryptfs_alloc_inode(struct super_block *sb) if (unlikely(!inode_info)) goto out; ecryptfs_init_crypt_stat(&inode_info->crypt_stat); + mutex_init(&inode_info->lower_file_mutex); + atomic_set(&inode_info->lower_file_count, 0); inode_info->lower_file = NULL; inode = &inode_info->vfs_inode; out: @@ -77,8 +79,7 @@ static void ecryptfs_i_callback(struct rcu_head *head) * * This is used during the final destruction of the inode. All * allocation of memory related to the inode, including allocated - * memory in the crypt_stat struct, will be released here. This - * function also fput()'s the persistent file for the lower inode. + * memory in the crypt_stat struct, will be released here. * There should be no chance that this deallocation will be missed. */ static void ecryptfs_destroy_inode(struct inode *inode) @@ -86,16 +87,7 @@ static void ecryptfs_destroy_inode(struct inode *inode) struct ecryptfs_inode_info *inode_info; inode_info = ecryptfs_inode_to_private(inode); - if (inode_info->lower_file) { - struct dentry *lower_dentry = - inode_info->lower_file->f_dentry; - - BUG_ON(!lower_dentry); - if (lower_dentry->d_inode) { - fput(inode_info->lower_file); - inode_info->lower_file = NULL; - } - } + BUG_ON(inode_info->lower_file); ecryptfs_destroy_crypt_stat(&inode_info->crypt_stat); call_rcu(&inode->i_rcu, ecryptfs_i_callback); } diff --git a/fs/fhandle.c b/fs/fhandle.c index bf93ad2bee07..6b088641f5bf 100644 --- a/fs/fhandle.c +++ b/fs/fhandle.c @@ -7,6 +7,7 @@ #include <linux/exportfs.h> #include <linux/fs_struct.h> #include <linux/fsnotify.h> +#include <linux/personality.h> #include <asm/uaccess.h> #include "internal.h" diff --git a/fs/file.c b/fs/file.c index 0be344755c02..4c6992d8f3ba 100644 --- a/fs/file.c +++ b/fs/file.c @@ -9,6 +9,7 @@ #include <linux/module.h> #include <linux/fs.h> #include <linux/mm.h> +#include <linux/mmzone.h> #include <linux/time.h> #include <linux/sched.h> #include <linux/slab.h> @@ -39,14 +40,17 @@ int sysctl_nr_open_max = 1024 * 1024; /* raised later */ */ static DEFINE_PER_CPU(struct fdtable_defer, fdtable_defer_list); -static inline void *alloc_fdmem(unsigned int size) +static void *alloc_fdmem(unsigned int size) { - void *data; - - data = kmalloc(size, GFP_KERNEL|__GFP_NOWARN); - if (data != NULL) - return data; - + /* + * Very large allocations can stress page reclaim, so fall back to + * vmalloc() if the allocation size will be considered "large" by the VM. + */ + if (size <= (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER)) { + void *data = kmalloc(size, GFP_KERNEL|__GFP_NOWARN); + if (data != NULL) + return data; + } return vmalloc(size); } diff --git a/fs/filesystems.c b/fs/filesystems.c index 751d6b255a12..0845f84f2a5f 100644 --- a/fs/filesystems.c +++ b/fs/filesystems.c @@ -110,14 +110,13 @@ int unregister_filesystem(struct file_system_type * fs) *tmp = fs->next; fs->next = NULL; write_unlock(&file_systems_lock); + synchronize_rcu(); return 0; } tmp = &(*tmp)->next; } write_unlock(&file_systems_lock); - synchronize_rcu(); - return -EINVAL; } diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index c6ba49bd95b3..b32eb29a4e6f 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -174,7 +174,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd) if (!inode) return 0; - if (nd->flags & LOOKUP_RCU) + if (nd && (nd->flags & LOOKUP_RCU)) return -ECHILD; fc = get_fuse_conn(inode); diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index c71995b111bf..0f5c4f9d5d62 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -884,8 +884,8 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping, } brelse(dibh); - gfs2_trans_end(sdp); failed: + gfs2_trans_end(sdp); if (al) { gfs2_inplace_release(ip); gfs2_quota_unlock(ip); diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index 5c356d09c321..f789c5732b7c 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -1506,7 +1506,7 @@ struct inode *gfs2_dir_search(struct inode *dir, const struct qstr *name) inode = gfs2_inode_lookup(dir->i_sb, be16_to_cpu(dent->de_type), be64_to_cpu(dent->de_inum.no_addr), - be64_to_cpu(dent->de_inum.no_formal_ino)); + be64_to_cpu(dent->de_inum.no_formal_ino), 0); brelse(bh); return inode; } diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index b2682e073eee..e48310885c48 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -617,18 +617,51 @@ static ssize_t gfs2_file_aio_write(struct kiocb *iocb, const struct iovec *iov, return generic_file_aio_write(iocb, iov, nr_segs, pos); } -static void empty_write_end(struct page *page, unsigned from, - unsigned to) +static int empty_write_end(struct page *page, unsigned from, + unsigned to, int mode) { - struct gfs2_inode *ip = GFS2_I(page->mapping->host); + struct inode *inode = page->mapping->host; + struct gfs2_inode *ip = GFS2_I(inode); + struct buffer_head *bh; + unsigned offset, blksize = 1 << inode->i_blkbits; + pgoff_t end_index = i_size_read(inode) >> PAGE_CACHE_SHIFT; zero_user(page, from, to-from); mark_page_accessed(page); - if (!gfs2_is_writeback(ip)) - gfs2_page_add_databufs(ip, page, from, to); + if (page->index < end_index || !(mode & FALLOC_FL_KEEP_SIZE)) { + if (!gfs2_is_writeback(ip)) + gfs2_page_add_databufs(ip, page, from, to); + + block_commit_write(page, from, to); + return 0; + } + + offset = 0; + bh = page_buffers(page); + while (offset < to) { + if (offset >= from) { + set_buffer_uptodate(bh); + mark_buffer_dirty(bh); + clear_buffer_new(bh); + write_dirty_buffer(bh, WRITE); + } + offset += blksize; + bh = bh->b_this_page; + } - block_commit_write(page, from, to); + offset = 0; + bh = page_buffers(page); + while (offset < to) { + if (offset >= from) { + wait_on_buffer(bh); + if (!buffer_uptodate(bh)) + return -EIO; + } + offset += blksize; + bh = bh->b_this_page; + } + return 0; } static int needs_empty_write(sector_t block, struct inode *inode) @@ -643,7 +676,8 @@ static int needs_empty_write(sector_t block, struct inode *inode) return !buffer_mapped(&bh_map); } -static int write_empty_blocks(struct page *page, unsigned from, unsigned to) +static int write_empty_blocks(struct page *page, unsigned from, unsigned to, + int mode) { struct inode *inode = page->mapping->host; unsigned start, end, next, blksize; @@ -668,7 +702,9 @@ static int write_empty_blocks(struct page *page, unsigned from, unsigned to) gfs2_block_map); if (unlikely(ret)) return ret; - empty_write_end(page, start, end); + ret = empty_write_end(page, start, end, mode); + if (unlikely(ret)) + return ret; end = 0; } start = next; @@ -682,7 +718,9 @@ static int write_empty_blocks(struct page *page, unsigned from, unsigned to) ret = __block_write_begin(page, start, end - start, gfs2_block_map); if (unlikely(ret)) return ret; - empty_write_end(page, start, end); + ret = empty_write_end(page, start, end, mode); + if (unlikely(ret)) + return ret; } return 0; @@ -731,7 +769,7 @@ static int fallocate_chunk(struct inode *inode, loff_t offset, loff_t len, if (curr == end) to = end_offset; - error = write_empty_blocks(page, from, to); + error = write_empty_blocks(page, from, to, mode); if (!error && offset + to > inode->i_size && !(mode & FALLOC_FL_KEEP_SIZE)) { i_size_write(inode, offset + to); diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index f07643e21bfa..7a4fb630a320 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -93,14 +93,12 @@ static unsigned int gl_hash(const struct gfs2_sbd *sdp, static inline void spin_lock_bucket(unsigned int hash) { - struct hlist_bl_head *bl = &gl_hash_table[hash]; - bit_spin_lock(0, (unsigned long *)bl); + hlist_bl_lock(&gl_hash_table[hash]); } static inline void spin_unlock_bucket(unsigned int hash) { - struct hlist_bl_head *bl = &gl_hash_table[hash]; - __bit_spin_unlock(0, (unsigned long *)bl); + hlist_bl_unlock(&gl_hash_table[hash]); } static void gfs2_glock_dealloc(struct rcu_head *rcu) diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 3754e3cbf02b..25eeb2bcee47 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -385,6 +385,10 @@ static int trans_go_demote_ok(const struct gfs2_glock *gl) static void iopen_go_callback(struct gfs2_glock *gl) { struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object; + struct gfs2_sbd *sdp = gl->gl_sbd; + + if (sdp->sd_vfs->s_flags & MS_RDONLY) + return; if (gl->gl_demote_state == LM_ST_UNLOCKED && gl->gl_state == LM_ST_SHARED && ip) { diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 97d54a28776a..9134dcb89479 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -40,37 +40,61 @@ struct gfs2_inum_range_host { u64 ir_length; }; +struct gfs2_skip_data { + u64 no_addr; + int skipped; + int non_block; +}; + static int iget_test(struct inode *inode, void *opaque) { struct gfs2_inode *ip = GFS2_I(inode); - u64 *no_addr = opaque; + struct gfs2_skip_data *data = opaque; - if (ip->i_no_addr == *no_addr) + if (ip->i_no_addr == data->no_addr) { + if (data->non_block && + inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)) { + data->skipped = 1; + return 0; + } return 1; - + } return 0; } static int iget_set(struct inode *inode, void *opaque) { struct gfs2_inode *ip = GFS2_I(inode); - u64 *no_addr = opaque; + struct gfs2_skip_data *data = opaque; - inode->i_ino = (unsigned long)*no_addr; - ip->i_no_addr = *no_addr; + if (data->skipped) + return -ENOENT; + inode->i_ino = (unsigned long)(data->no_addr); + ip->i_no_addr = data->no_addr; return 0; } struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr) { unsigned long hash = (unsigned long)no_addr; - return ilookup5(sb, hash, iget_test, &no_addr); + struct gfs2_skip_data data; + + data.no_addr = no_addr; + data.skipped = 0; + data.non_block = 0; + return ilookup5(sb, hash, iget_test, &data); } -static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr) +static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr, + int non_block) { + struct gfs2_skip_data data; unsigned long hash = (unsigned long)no_addr; - return iget5_locked(sb, hash, iget_test, iget_set, &no_addr); + + data.no_addr = no_addr; + data.skipped = 0; + data.non_block = non_block; + return iget5_locked(sb, hash, iget_test, iget_set, &data); } /** @@ -111,19 +135,20 @@ static void gfs2_set_iop(struct inode *inode) * @sb: The super block * @no_addr: The inode number * @type: The type of the inode + * non_block: Can we block on inodes that are being freed? * * Returns: A VFS inode, or an error */ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, - u64 no_addr, u64 no_formal_ino) + u64 no_addr, u64 no_formal_ino, int non_block) { struct inode *inode; struct gfs2_inode *ip; struct gfs2_glock *io_gl = NULL; int error; - inode = gfs2_iget(sb, no_addr); + inode = gfs2_iget(sb, no_addr, non_block); ip = GFS2_I(inode); if (!inode) @@ -185,11 +210,12 @@ struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr, { struct super_block *sb = sdp->sd_vfs; struct gfs2_holder i_gh; - struct inode *inode; + struct inode *inode = NULL; int error; + /* Must not read in block until block type is verified */ error = gfs2_glock_nq_num(sdp, no_addr, &gfs2_inode_glops, - LM_ST_SHARED, LM_FLAG_ANY, &i_gh); + LM_ST_EXCLUSIVE, GL_SKIP, &i_gh); if (error) return ERR_PTR(error); @@ -197,7 +223,7 @@ struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr, if (error) goto fail; - inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, 0); + inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, 0, 1); if (IS_ERR(inode)) goto fail; @@ -843,7 +869,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, goto fail_gunlock2; inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode), inum.no_addr, - inum.no_formal_ino); + inum.no_formal_ino, 0); if (IS_ERR(inode)) goto fail_gunlock2; diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h index 3e00a66e7cbd..099ca305e518 100644 --- a/fs/gfs2/inode.h +++ b/fs/gfs2/inode.h @@ -97,7 +97,8 @@ err: } extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type, - u64 no_addr, u64 no_formal_ino); + u64 no_addr, u64 no_formal_ino, + int non_block); extern struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr, u64 *no_formal_ino, unsigned int blktype); diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 42ef24355afb..d3c69eb91c74 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -430,7 +430,7 @@ static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, struct dentry *dentry; struct inode *inode; - inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0); + inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, 0); if (IS_ERR(inode)) { fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); return PTR_ERR(inode); diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index cf930cd9664a..6fcae8469f6d 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -945,7 +945,7 @@ static void try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked, u64 skip /* rgblk_search can return a block < goal, so we need to keep it marching forward. */ no_addr = block + rgd->rd_data0; - goal++; + goal = max(block + 1, goal + 1); if (*last_unlinked != NO_BLOCK && no_addr <= *last_unlinked) continue; if (no_addr == skip) @@ -971,7 +971,7 @@ static void try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked, u64 skip found++; /* Limit reclaim to sensible number of tasks */ - if (found > 2*NR_CPUS) + if (found > NR_CPUS) return; } diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index a4e23d68a398..b9f28e66dad1 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1318,15 +1318,17 @@ static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt) static void gfs2_evict_inode(struct inode *inode) { - struct gfs2_sbd *sdp = inode->i_sb->s_fs_info; + struct super_block *sb = inode->i_sb; + struct gfs2_sbd *sdp = sb->s_fs_info; struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_holder gh; int error; - if (inode->i_nlink) + if (inode->i_nlink || (sb->s_flags & MS_RDONLY)) goto out; - error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); + /* Must not read inode block until block type has been verified */ + error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, &gh); if (unlikely(error)) { gfs2_glock_dq_uninit(&ip->i_iopen_gh); goto out; @@ -1336,6 +1338,12 @@ static void gfs2_evict_inode(struct inode *inode) if (error) goto out_truncate; + if (test_bit(GIF_INVALID, &ip->i_flags)) { + error = gfs2_inode_refresh(ip); + if (error) + goto out_truncate; + } + ip->i_iopen_gh.gh_flags |= GL_NOCACHE; gfs2_glock_dq_wait(&ip->i_iopen_gh); gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, &ip->i_iopen_gh); diff --git a/fs/hpfs/Kconfig b/fs/hpfs/Kconfig index 0c39dc3ef7d7..56bd15c5bf6c 100644 --- a/fs/hpfs/Kconfig +++ b/fs/hpfs/Kconfig @@ -1,7 +1,6 @@ config HPFS_FS tristate "OS/2 HPFS file system support" depends on BLOCK - depends on BROKEN || !PREEMPT help OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS is the file system used for organizing files on OS/2 hard disk diff --git a/fs/hpfs/alloc.c b/fs/hpfs/alloc.c index 5503e2c28910..7a5eb2c718c8 100644 --- a/fs/hpfs/alloc.c +++ b/fs/hpfs/alloc.c @@ -8,8 +8,6 @@ #include "hpfs_fn.h" -static int hpfs_alloc_if_possible_nolock(struct super_block *s, secno sec); - /* * Check if a sector is allocated in bitmap * This is really slow. Turned on only if chk==2 @@ -18,9 +16,9 @@ static int hpfs_alloc_if_possible_nolock(struct super_block *s, secno sec); static int chk_if_allocated(struct super_block *s, secno sec, char *msg) { struct quad_buffer_head qbh; - unsigned *bmp; + u32 *bmp; if (!(bmp = hpfs_map_bitmap(s, sec >> 14, &qbh, "chk"))) goto fail; - if ((bmp[(sec & 0x3fff) >> 5] >> (sec & 0x1f)) & 1) { + if ((cpu_to_le32(bmp[(sec & 0x3fff) >> 5]) >> (sec & 0x1f)) & 1) { hpfs_error(s, "sector '%s' - %08x not allocated in bitmap", msg, sec); goto fail1; } @@ -28,7 +26,7 @@ static int chk_if_allocated(struct super_block *s, secno sec, char *msg) if (sec >= hpfs_sb(s)->sb_dirband_start && sec < hpfs_sb(s)->sb_dirband_start + hpfs_sb(s)->sb_dirband_size) { unsigned ssec = (sec - hpfs_sb(s)->sb_dirband_start) / 4; if (!(bmp = hpfs_map_dnode_bitmap(s, &qbh))) goto fail; - if ((bmp[ssec >> 5] >> (ssec & 0x1f)) & 1) { + if ((le32_to_cpu(bmp[ssec >> 5]) >> (ssec & 0x1f)) & 1) { hpfs_error(s, "sector '%s' - %08x not allocated in directory bitmap", msg, sec); goto fail1; } @@ -75,7 +73,6 @@ static secno alloc_in_bmp(struct super_block *s, secno near, unsigned n, unsigne hpfs_error(s, "Bad allocation size: %d", n); return 0; } - lock_super(s); if (bs != ~0x3fff) { if (!(bmp = hpfs_map_bitmap(s, near >> 14, &qbh, "aib"))) goto uls; } else { @@ -85,10 +82,6 @@ static secno alloc_in_bmp(struct super_block *s, secno near, unsigned n, unsigne ret = bs + nr; goto rt; } - /*if (!tstbits(bmp, nr + n, n + forward)) { - ret = bs + nr + n; - goto rt; - }*/ q = nr + n; b = 0; while ((a = tstbits(bmp, q, n + forward)) != 0) { q += a; @@ -105,14 +98,14 @@ static secno alloc_in_bmp(struct super_block *s, secno near, unsigned n, unsigne goto rt; } nr >>= 5; - /*for (i = nr + 1; i != nr; i++, i &= 0x1ff) {*/ + /*for (i = nr + 1; i != nr; i++, i &= 0x1ff) */ i = nr; do { - if (!bmp[i]) goto cont; - if (n + forward >= 0x3f && bmp[i] != -1) goto cont; + if (!le32_to_cpu(bmp[i])) goto cont; + if (n + forward >= 0x3f && le32_to_cpu(bmp[i]) != 0xffffffff) goto cont; q = i<<5; if (i > 0) { - unsigned k = bmp[i-1]; + unsigned k = le32_to_cpu(bmp[i-1]); while (k & 0x80000000) { q--; k <<= 1; } @@ -132,18 +125,17 @@ static secno alloc_in_bmp(struct super_block *s, secno near, unsigned n, unsigne } while (i != nr); rt: if (ret) { - if (hpfs_sb(s)->sb_chk && ((ret >> 14) != (bs >> 14) || (bmp[(ret & 0x3fff) >> 5] | ~(((1 << n) - 1) << (ret & 0x1f))) != 0xffffffff)) { + if (hpfs_sb(s)->sb_chk && ((ret >> 14) != (bs >> 14) || (le32_to_cpu(bmp[(ret & 0x3fff) >> 5]) | ~(((1 << n) - 1) << (ret & 0x1f))) != 0xffffffff)) { hpfs_error(s, "Allocation doesn't work! Wanted %d, allocated at %08x", n, ret); ret = 0; goto b; } - bmp[(ret & 0x3fff) >> 5] &= ~(((1 << n) - 1) << (ret & 0x1f)); + bmp[(ret & 0x3fff) >> 5] &= cpu_to_le32(~(((1 << n) - 1) << (ret & 0x1f))); hpfs_mark_4buffers_dirty(&qbh); } b: hpfs_brelse4(&qbh); uls: - unlock_super(s); return ret; } @@ -155,7 +147,7 @@ static secno alloc_in_bmp(struct super_block *s, secno near, unsigned n, unsigne * sectors */ -secno hpfs_alloc_sector(struct super_block *s, secno near, unsigned n, int forward, int lock) +secno hpfs_alloc_sector(struct super_block *s, secno near, unsigned n, int forward) { secno sec; int i; @@ -167,7 +159,6 @@ secno hpfs_alloc_sector(struct super_block *s, secno near, unsigned n, int forwa forward = -forward; f_p = 1; } - if (lock) hpfs_lock_creation(s); n_bmps = (sbi->sb_fs_size + 0x4000 - 1) >> 14; if (near && near < sbi->sb_fs_size) { if ((sec = alloc_in_bmp(s, near, n, f_p ? forward : forward/4))) goto ret; @@ -214,18 +205,17 @@ secno hpfs_alloc_sector(struct super_block *s, secno near, unsigned n, int forwa ret: if (sec && f_p) { for (i = 0; i < forward; i++) { - if (!hpfs_alloc_if_possible_nolock(s, sec + i + 1)) { + if (!hpfs_alloc_if_possible(s, sec + i + 1)) { hpfs_error(s, "Prealloc doesn't work! Wanted %d, allocated at %08x, can't allocate %d", forward, sec, i); sec = 0; break; } } } - if (lock) hpfs_unlock_creation(s); return sec; } -static secno alloc_in_dirband(struct super_block *s, secno near, int lock) +static secno alloc_in_dirband(struct super_block *s, secno near) { unsigned nr = near; secno sec; @@ -236,49 +226,35 @@ static secno alloc_in_dirband(struct super_block *s, secno near, int lock) nr = sbi->sb_dirband_start + sbi->sb_dirband_size - 4; nr -= sbi->sb_dirband_start; nr >>= 2; - if (lock) hpfs_lock_creation(s); sec = alloc_in_bmp(s, (~0x3fff) | nr, 1, 0); - if (lock) hpfs_unlock_creation(s); if (!sec) return 0; return ((sec & 0x3fff) << 2) + sbi->sb_dirband_start; } /* Alloc sector if it's free */ -static int hpfs_alloc_if_possible_nolock(struct super_block *s, secno sec) +int hpfs_alloc_if_possible(struct super_block *s, secno sec) { struct quad_buffer_head qbh; - unsigned *bmp; - lock_super(s); + u32 *bmp; if (!(bmp = hpfs_map_bitmap(s, sec >> 14, &qbh, "aip"))) goto end; - if (bmp[(sec & 0x3fff) >> 5] & (1 << (sec & 0x1f))) { - bmp[(sec & 0x3fff) >> 5] &= ~(1 << (sec & 0x1f)); + if (le32_to_cpu(bmp[(sec & 0x3fff) >> 5]) & (1 << (sec & 0x1f))) { + bmp[(sec & 0x3fff) >> 5] &= cpu_to_le32(~(1 << (sec & 0x1f))); hpfs_mark_4buffers_dirty(&qbh); hpfs_brelse4(&qbh); - unlock_super(s); return 1; } hpfs_brelse4(&qbh); end: - unlock_super(s); return 0; } -int hpfs_alloc_if_possible(struct super_block *s, secno sec) -{ - int r; - hpfs_lock_creation(s); - r = hpfs_alloc_if_possible_nolock(s, sec); - hpfs_unlock_creation(s); - return r; -} - /* Free sectors in bitmaps */ void hpfs_free_sectors(struct super_block *s, secno sec, unsigned n) { struct quad_buffer_head qbh; - unsigned *bmp; + u32 *bmp; struct hpfs_sb_info *sbi = hpfs_sb(s); /*printk("2 - ");*/ if (!n) return; @@ -286,26 +262,22 @@ void hpfs_free_sectors(struct super_block *s, secno sec, unsigned n) hpfs_error(s, "Trying to free reserved sector %08x", sec); return; } - lock_super(s); sbi->sb_max_fwd_alloc += n > 0xffff ? 0xffff : n; if (sbi->sb_max_fwd_alloc > 0xffffff) sbi->sb_max_fwd_alloc = 0xffffff; new_map: if (!(bmp = hpfs_map_bitmap(s, sec >> 14, &qbh, "free"))) { - unlock_super(s); return; } new_tst: - if ((bmp[(sec & 0x3fff) >> 5] >> (sec & 0x1f) & 1)) { + if ((le32_to_cpu(bmp[(sec & 0x3fff) >> 5]) >> (sec & 0x1f) & 1)) { hpfs_error(s, "sector %08x not allocated", sec); hpfs_brelse4(&qbh); - unlock_super(s); return; } - bmp[(sec & 0x3fff) >> 5] |= 1 << (sec & 0x1f); + bmp[(sec & 0x3fff) >> 5] |= cpu_to_le32(1 << (sec & 0x1f)); if (!--n) { hpfs_mark_4buffers_dirty(&qbh); hpfs_brelse4(&qbh); - unlock_super(s); return; } if (!(++sec & 0x3fff)) { @@ -327,13 +299,13 @@ int hpfs_check_free_dnodes(struct super_block *s, int n) int n_bmps = (hpfs_sb(s)->sb_fs_size + 0x4000 - 1) >> 14; int b = hpfs_sb(s)->sb_c_bitmap & 0x0fffffff; int i, j; - unsigned *bmp; + u32 *bmp; struct quad_buffer_head qbh; if ((bmp = hpfs_map_dnode_bitmap(s, &qbh))) { for (j = 0; j < 512; j++) { unsigned k; - if (!bmp[j]) continue; - for (k = bmp[j]; k; k >>= 1) if (k & 1) if (!--n) { + if (!le32_to_cpu(bmp[j])) continue; + for (k = le32_to_cpu(bmp[j]); k; k >>= 1) if (k & 1) if (!--n) { hpfs_brelse4(&qbh); return 0; } @@ -352,10 +324,10 @@ int hpfs_check_free_dnodes(struct super_block *s, int n) chk_bmp: if (bmp) { for (j = 0; j < 512; j++) { - unsigned k; - if (!bmp[j]) continue; + u32 k; + if (!le32_to_cpu(bmp[j])) continue; for (k = 0xf; k; k <<= 4) - if ((bmp[j] & k) == k) { + if ((le32_to_cpu(bmp[j]) & k) == k) { if (!--n) { hpfs_brelse4(&qbh); return 0; @@ -379,44 +351,40 @@ void hpfs_free_dnode(struct super_block *s, dnode_secno dno) hpfs_free_sectors(s, dno, 4); } else { struct quad_buffer_head qbh; - unsigned *bmp; + u32 *bmp; unsigned ssec = (dno - hpfs_sb(s)->sb_dirband_start) / 4; - lock_super(s); if (!(bmp = hpfs_map_dnode_bitmap(s, &qbh))) { - unlock_super(s); return; } - bmp[ssec >> 5] |= 1 << (ssec & 0x1f); + bmp[ssec >> 5] |= cpu_to_le32(1 << (ssec & 0x1f)); hpfs_mark_4buffers_dirty(&qbh); hpfs_brelse4(&qbh); - unlock_super(s); } } struct dnode *hpfs_alloc_dnode(struct super_block *s, secno near, - dnode_secno *dno, struct quad_buffer_head *qbh, - int lock) + dnode_secno *dno, struct quad_buffer_head *qbh) { struct dnode *d; if (hpfs_count_one_bitmap(s, hpfs_sb(s)->sb_dmap) > FREE_DNODES_ADD) { - if (!(*dno = alloc_in_dirband(s, near, lock))) - if (!(*dno = hpfs_alloc_sector(s, near, 4, 0, lock))) return NULL; + if (!(*dno = alloc_in_dirband(s, near))) + if (!(*dno = hpfs_alloc_sector(s, near, 4, 0))) return NULL; } else { - if (!(*dno = hpfs_alloc_sector(s, near, 4, 0, lock))) - if (!(*dno = alloc_in_dirband(s, near, lock))) return NULL; + if (!(*dno = hpfs_alloc_sector(s, near, 4, 0))) + if (!(*dno = alloc_in_dirband(s, near))) return NULL; } if (!(d = hpfs_get_4sectors(s, *dno, qbh))) { hpfs_free_dnode(s, *dno); return NULL; } memset(d, 0, 2048); - d->magic = DNODE_MAGIC; - d->first_free = 52; + d->magic = cpu_to_le32(DNODE_MAGIC); + d->first_free = cpu_to_le32(52); d->dirent[0] = 32; d->dirent[2] = 8; d->dirent[30] = 1; d->dirent[31] = 255; - d->self = *dno; + d->self = cpu_to_le32(*dno); return d; } @@ -424,16 +392,16 @@ struct fnode *hpfs_alloc_fnode(struct super_block *s, secno near, fnode_secno *f struct buffer_head **bh) { struct fnode *f; - if (!(*fno = hpfs_alloc_sector(s, near, 1, FNODE_ALLOC_FWD, 1))) return NULL; + if (!(*fno = hpfs_alloc_sector(s, near, 1, FNODE_ALLOC_FWD))) return NULL; if (!(f = hpfs_get_sector(s, *fno, bh))) { hpfs_free_sectors(s, *fno, 1); return NULL; } memset(f, 0, 512); - f->magic = FNODE_MAGIC; - f->ea_offs = 0xc4; + f->magic = cpu_to_le32(FNODE_MAGIC); + f->ea_offs = cpu_to_le16(0xc4); f->btree.n_free_nodes = 8; - f->btree.first_free = 8; + f->btree.first_free = cpu_to_le16(8); return f; } @@ -441,16 +409,16 @@ struct anode *hpfs_alloc_anode(struct super_block *s, secno near, anode_secno *a struct buffer_head **bh) { struct anode *a; - if (!(*ano = hpfs_alloc_sector(s, near, 1, ANODE_ALLOC_FWD, 1))) return NULL; + if (!(*ano = hpfs_alloc_sector(s, near, 1, ANODE_ALLOC_FWD))) return NULL; if (!(a = hpfs_get_sector(s, *ano, bh))) { hpfs_free_sectors(s, *ano, 1); return NULL; } memset(a, 0, 512); - a->magic = ANODE_MAGIC; - a->self = *ano; + a->magic = cpu_to_le32(ANODE_MAGIC); + a->self = cpu_to_le32(*ano); a->btree.n_free_nodes = 40; a->btree.n_used_nodes = 0; - a->btree.first_free = 8; + a->btree.first_free = cpu_to_le16(8); return a; } diff --git a/fs/hpfs/anode.c b/fs/hpfs/anode.c index 6a2f04bf3df0..08b503e8ed29 100644 --- a/fs/hpfs/anode.c +++ b/fs/hpfs/anode.c @@ -22,8 +22,8 @@ secno hpfs_bplus_lookup(struct super_block *s, struct inode *inode, if (hpfs_sb(s)->sb_chk) if (hpfs_stop_cycles(s, a, &c1, &c2, "hpfs_bplus_lookup")) return -1; if (btree->internal) { for (i = 0; i < btree->n_used_nodes; i++) - if (btree->u.internal[i].file_secno > sec) { - a = btree->u.internal[i].down; + if (le32_to_cpu(btree->u.internal[i].file_secno) > sec) { + a = le32_to_cpu(btree->u.internal[i].down); brelse(bh); if (!(anode = hpfs_map_anode(s, a, &bh))) return -1; btree = &anode->btree; @@ -34,18 +34,18 @@ secno hpfs_bplus_lookup(struct super_block *s, struct inode *inode, return -1; } for (i = 0; i < btree->n_used_nodes; i++) - if (btree->u.external[i].file_secno <= sec && - btree->u.external[i].file_secno + btree->u.external[i].length > sec) { - a = btree->u.external[i].disk_secno + sec - btree->u.external[i].file_secno; + if (le32_to_cpu(btree->u.external[i].file_secno) <= sec && + le32_to_cpu(btree->u.external[i].file_secno) + le32_to_cpu(btree->u.external[i].length) > sec) { + a = le32_to_cpu(btree->u.external[i].disk_secno) + sec - le32_to_cpu(btree->u.external[i].file_secno); if (hpfs_sb(s)->sb_chk) if (hpfs_chk_sectors(s, a, 1, "data")) { brelse(bh); return -1; } if (inode) { struct hpfs_inode_info *hpfs_inode = hpfs_i(inode); - hpfs_inode->i_file_sec = btree->u.external[i].file_secno; - hpfs_inode->i_disk_sec = btree->u.external[i].disk_secno; - hpfs_inode->i_n_secs = btree->u.external[i].length; + hpfs_inode->i_file_sec = le32_to_cpu(btree->u.external[i].file_secno); + hpfs_inode->i_disk_sec = le32_to_cpu(btree->u.external[i].disk_secno); + hpfs_inode->i_n_secs = le32_to_cpu(btree->u.external[i].length); } brelse(bh); return a; @@ -83,8 +83,8 @@ secno hpfs_add_sector_to_btree(struct super_block *s, secno node, int fnod, unsi return -1; } if (btree->internal) { - a = btree->u.internal[n].down; - btree->u.internal[n].file_secno = -1; + a = le32_to_cpu(btree->u.internal[n].down); + btree->u.internal[n].file_secno = cpu_to_le32(-1); mark_buffer_dirty(bh); brelse(bh); if (hpfs_sb(s)->sb_chk) @@ -94,15 +94,15 @@ secno hpfs_add_sector_to_btree(struct super_block *s, secno node, int fnod, unsi goto go_down; } if (n >= 0) { - if (btree->u.external[n].file_secno + btree->u.external[n].length != fsecno) { + if (le32_to_cpu(btree->u.external[n].file_secno) + le32_to_cpu(btree->u.external[n].length) != fsecno) { hpfs_error(s, "allocated size %08x, trying to add sector %08x, %cnode %08x", - btree->u.external[n].file_secno + btree->u.external[n].length, fsecno, + le32_to_cpu(btree->u.external[n].file_secno) + le32_to_cpu(btree->u.external[n].length), fsecno, fnod?'f':'a', node); brelse(bh); return -1; } - if (hpfs_alloc_if_possible(s, se = btree->u.external[n].disk_secno + btree->u.external[n].length)) { - btree->u.external[n].length++; + if (hpfs_alloc_if_possible(s, se = le32_to_cpu(btree->u.external[n].disk_secno) + le32_to_cpu(btree->u.external[n].length))) { + btree->u.external[n].length = cpu_to_le32(le32_to_cpu(btree->u.external[n].length) + 1); mark_buffer_dirty(bh); brelse(bh); return se; @@ -115,20 +115,20 @@ secno hpfs_add_sector_to_btree(struct super_block *s, secno node, int fnod, unsi } se = !fnod ? node : (node + 16384) & ~16383; } - if (!(se = hpfs_alloc_sector(s, se, 1, fsecno*ALLOC_M>ALLOC_FWD_MAX ? ALLOC_FWD_MAX : fsecno*ALLOC_M<ALLOC_FWD_MIN ? ALLOC_FWD_MIN : fsecno*ALLOC_M, 1))) { + if (!(se = hpfs_alloc_sector(s, se, 1, fsecno*ALLOC_M>ALLOC_FWD_MAX ? ALLOC_FWD_MAX : fsecno*ALLOC_M<ALLOC_FWD_MIN ? ALLOC_FWD_MIN : fsecno*ALLOC_M))) { brelse(bh); return -1; } - fs = n < 0 ? 0 : btree->u.external[n].file_secno + btree->u.external[n].length; + fs = n < 0 ? 0 : le32_to_cpu(btree->u.external[n].file_secno) + le32_to_cpu(btree->u.external[n].length); if (!btree->n_free_nodes) { - up = a != node ? anode->up : -1; + up = a != node ? le32_to_cpu(anode->up) : -1; if (!(anode = hpfs_alloc_anode(s, a, &na, &bh1))) { brelse(bh); hpfs_free_sectors(s, se, 1); return -1; } if (a == node && fnod) { - anode->up = node; + anode->up = cpu_to_le32(node); anode->btree.fnode_parent = 1; anode->btree.n_used_nodes = btree->n_used_nodes; anode->btree.first_free = btree->first_free; @@ -137,9 +137,9 @@ secno hpfs_add_sector_to_btree(struct super_block *s, secno node, int fnod, unsi btree->internal = 1; btree->n_free_nodes = 11; btree->n_used_nodes = 1; - btree->first_free = (char *)&(btree->u.internal[1]) - (char *)btree; - btree->u.internal[0].file_secno = -1; - btree->u.internal[0].down = na; + btree->first_free = cpu_to_le16((char *)&(btree->u.internal[1]) - (char *)btree); + btree->u.internal[0].file_secno = cpu_to_le32(-1); + btree->u.internal[0].down = cpu_to_le32(na); mark_buffer_dirty(bh); } else if (!(ranode = hpfs_alloc_anode(s, /*a*/0, &ra, &bh2))) { brelse(bh); @@ -153,15 +153,15 @@ secno hpfs_add_sector_to_btree(struct super_block *s, secno node, int fnod, unsi btree = &anode->btree; } btree->n_free_nodes--; n = btree->n_used_nodes++; - btree->first_free += 12; - btree->u.external[n].disk_secno = se; - btree->u.external[n].file_secno = fs; - btree->u.external[n].length = 1; + btree->first_free = cpu_to_le16(le16_to_cpu(btree->first_free) + 12); + btree->u.external[n].disk_secno = cpu_to_le32(se); + btree->u.external[n].file_secno = cpu_to_le32(fs); + btree->u.external[n].length = cpu_to_le32(1); mark_buffer_dirty(bh); brelse(bh); if ((a == node && fnod) || na == -1) return se; c2 = 0; - while (up != -1) { + while (up != (anode_secno)-1) { struct anode *new_anode; if (hpfs_sb(s)->sb_chk) if (hpfs_stop_cycles(s, up, &c1, &c2, "hpfs_add_sector_to_btree #2")) return -1; @@ -174,47 +174,47 @@ secno hpfs_add_sector_to_btree(struct super_block *s, secno node, int fnod, unsi } if (btree->n_free_nodes) { btree->n_free_nodes--; n = btree->n_used_nodes++; - btree->first_free += 8; - btree->u.internal[n].file_secno = -1; - btree->u.internal[n].down = na; - btree->u.internal[n-1].file_secno = fs; + btree->first_free = cpu_to_le16(le16_to_cpu(btree->first_free) + 8); + btree->u.internal[n].file_secno = cpu_to_le32(-1); + btree->u.internal[n].down = cpu_to_le32(na); + btree->u.internal[n-1].file_secno = cpu_to_le32(fs); mark_buffer_dirty(bh); brelse(bh); brelse(bh2); hpfs_free_sectors(s, ra, 1); if ((anode = hpfs_map_anode(s, na, &bh))) { - anode->up = up; + anode->up = cpu_to_le32(up); anode->btree.fnode_parent = up == node && fnod; mark_buffer_dirty(bh); brelse(bh); } return se; } - up = up != node ? anode->up : -1; - btree->u.internal[btree->n_used_nodes - 1].file_secno = /*fs*/-1; + up = up != node ? le32_to_cpu(anode->up) : -1; + btree->u.internal[btree->n_used_nodes - 1].file_secno = cpu_to_le32(/*fs*/-1); mark_buffer_dirty(bh); brelse(bh); a = na; if ((new_anode = hpfs_alloc_anode(s, a, &na, &bh))) { anode = new_anode; - /*anode->up = up != -1 ? up : ra;*/ + /*anode->up = cpu_to_le32(up != -1 ? up : ra);*/ anode->btree.internal = 1; anode->btree.n_used_nodes = 1; anode->btree.n_free_nodes = 59; - anode->btree.first_free = 16; - anode->btree.u.internal[0].down = a; - anode->btree.u.internal[0].file_secno = -1; + anode->btree.first_free = cpu_to_le16(16); + anode->btree.u.internal[0].down = cpu_to_le32(a); + anode->btree.u.internal[0].file_secno = cpu_to_le32(-1); mark_buffer_dirty(bh); brelse(bh); if ((anode = hpfs_map_anode(s, a, &bh))) { - anode->up = na; + anode->up = cpu_to_le32(na); mark_buffer_dirty(bh); brelse(bh); } } else na = a; } if ((anode = hpfs_map_anode(s, na, &bh))) { - anode->up = node; + anode->up = cpu_to_le32(node); if (fnod) anode->btree.fnode_parent = 1; mark_buffer_dirty(bh); brelse(bh); @@ -232,14 +232,14 @@ secno hpfs_add_sector_to_btree(struct super_block *s, secno node, int fnod, unsi } btree = &fnode->btree; } - ranode->up = node; - memcpy(&ranode->btree, btree, btree->first_free); + ranode->up = cpu_to_le32(node); + memcpy(&ranode->btree, btree, le16_to_cpu(btree->first_free)); if (fnod) ranode->btree.fnode_parent = 1; ranode->btree.n_free_nodes = (ranode->btree.internal ? 60 : 40) - ranode->btree.n_used_nodes; if (ranode->btree.internal) for (n = 0; n < ranode->btree.n_used_nodes; n++) { struct anode *unode; - if ((unode = hpfs_map_anode(s, ranode->u.internal[n].down, &bh1))) { - unode->up = ra; + if ((unode = hpfs_map_anode(s, le32_to_cpu(ranode->u.internal[n].down), &bh1))) { + unode->up = cpu_to_le32(ra); unode->btree.fnode_parent = 0; mark_buffer_dirty(bh1); brelse(bh1); @@ -248,11 +248,11 @@ secno hpfs_add_sector_to_btree(struct super_block *s, secno node, int fnod, unsi btree->internal = 1; btree->n_free_nodes = fnod ? 10 : 58; btree->n_used_nodes = 2; - btree->first_free = (char *)&btree->u.internal[2] - (char *)btree; - btree->u.internal[0].file_secno = fs; - btree->u.internal[0].down = ra; - btree->u.internal[1].file_secno = -1; - btree->u.internal[1].down = na; + btree->first_free = cpu_to_le16((char *)&btree->u.internal[2] - (char *)btree); + btree->u.internal[0].file_secno = cpu_to_le32(fs); + btree->u.internal[0].down = cpu_to_le32(ra); + btree->u.internal[1].file_secno = cpu_to_le32(-1); + btree->u.internal[1].down = cpu_to_le32(na); mark_buffer_dirty(bh); brelse(bh); mark_buffer_dirty(bh2); @@ -279,7 +279,7 @@ void hpfs_remove_btree(struct super_block *s, struct bplus_header *btree) go_down: d2 = 0; while (btree1->internal) { - ano = btree1->u.internal[pos].down; + ano = le32_to_cpu(btree1->u.internal[pos].down); if (level) brelse(bh); if (hpfs_sb(s)->sb_chk) if (hpfs_stop_cycles(s, ano, &d1, &d2, "hpfs_remove_btree #1")) @@ -290,7 +290,7 @@ void hpfs_remove_btree(struct super_block *s, struct bplus_header *btree) pos = 0; } for (i = 0; i < btree1->n_used_nodes; i++) - hpfs_free_sectors(s, btree1->u.external[i].disk_secno, btree1->u.external[i].length); + hpfs_free_sectors(s, le32_to_cpu(btree1->u.external[i].disk_secno), le32_to_cpu(btree1->u.external[i].length)); go_up: if (!level) return; brelse(bh); @@ -298,13 +298,13 @@ void hpfs_remove_btree(struct super_block *s, struct bplus_header *btree) if (hpfs_stop_cycles(s, ano, &c1, &c2, "hpfs_remove_btree #2")) return; hpfs_free_sectors(s, ano, 1); oano = ano; - ano = anode->up; + ano = le32_to_cpu(anode->up); if (--level) { if (!(anode = hpfs_map_anode(s, ano, &bh))) return; btree1 = &anode->btree; } else btree1 = btree; for (i = 0; i < btree1->n_used_nodes; i++) { - if (btree1->u.internal[i].down == oano) { + if (le32_to_cpu(btree1->u.internal[i].down) == oano) { if ((pos = i + 1) < btree1->n_used_nodes) goto go_down; else @@ -411,7 +411,7 @@ void hpfs_truncate_btree(struct super_block *s, secno f, int fno, unsigned secs) if (fno) { btree->n_free_nodes = 8; btree->n_used_nodes = 0; - btree->first_free = 8; + btree->first_free = cpu_to_le16(8); btree->internal = 0; mark_buffer_dirty(bh); } else hpfs_free_sectors(s, f, 1); @@ -421,22 +421,22 @@ void hpfs_truncate_btree(struct super_block *s, secno f, int fno, unsigned secs) while (btree->internal) { nodes = btree->n_used_nodes + btree->n_free_nodes; for (i = 0; i < btree->n_used_nodes; i++) - if (btree->u.internal[i].file_secno >= secs) goto f; + if (le32_to_cpu(btree->u.internal[i].file_secno) >= secs) goto f; brelse(bh); hpfs_error(s, "internal btree %08x doesn't end with -1", node); return; f: for (j = i + 1; j < btree->n_used_nodes; j++) - hpfs_ea_remove(s, btree->u.internal[j].down, 1, 0); + hpfs_ea_remove(s, le32_to_cpu(btree->u.internal[j].down), 1, 0); btree->n_used_nodes = i + 1; btree->n_free_nodes = nodes - btree->n_used_nodes; - btree->first_free = 8 + 8 * btree->n_used_nodes; + btree->first_free = cpu_to_le16(8 + 8 * btree->n_used_nodes); mark_buffer_dirty(bh); - if (btree->u.internal[i].file_secno == secs) { + if (btree->u.internal[i].file_secno == cpu_to_le32(secs)) { brelse(bh); return; } - node = btree->u.internal[i].down; + node = le32_to_cpu(btree->u.internal[i].down); brelse(bh); if (hpfs_sb(s)->sb_chk) if (hpfs_stop_cycles(s, node, &c1, &c2, "hpfs_truncate_btree")) @@ -446,25 +446,25 @@ void hpfs_truncate_btree(struct super_block *s, secno f, int fno, unsigned secs) } nodes = btree->n_used_nodes + btree->n_free_nodes; for (i = 0; i < btree->n_used_nodes; i++) - if (btree->u.external[i].file_secno + btree->u.external[i].length >= secs) goto ff; + if (le32_to_cpu(btree->u.external[i].file_secno) + le32_to_cpu(btree->u.external[i].length) >= secs) goto ff; brelse(bh); return; ff: - if (secs <= btree->u.external[i].file_secno) { + if (secs <= le32_to_cpu(btree->u.external[i].file_secno)) { hpfs_error(s, "there is an allocation error in file %08x, sector %08x", f, secs); if (i) i--; } - else if (btree->u.external[i].file_secno + btree->u.external[i].length > secs) { - hpfs_free_sectors(s, btree->u.external[i].disk_secno + secs - - btree->u.external[i].file_secno, btree->u.external[i].length - - secs + btree->u.external[i].file_secno); /* I hope gcc optimizes this :-) */ - btree->u.external[i].length = secs - btree->u.external[i].file_secno; + else if (le32_to_cpu(btree->u.external[i].file_secno) + le32_to_cpu(btree->u.external[i].length) > secs) { + hpfs_free_sectors(s, le32_to_cpu(btree->u.external[i].disk_secno) + secs - + le32_to_cpu(btree->u.external[i].file_secno), le32_to_cpu(btree->u.external[i].length) + - secs + le32_to_cpu(btree->u.external[i].file_secno)); /* I hope gcc optimizes this :-) */ + btree->u.external[i].length = cpu_to_le32(secs - le32_to_cpu(btree->u.external[i].file_secno)); } for (j = i + 1; j < btree->n_used_nodes; j++) - hpfs_free_sectors(s, btree->u.external[j].disk_secno, btree->u.external[j].length); + hpfs_free_sectors(s, le32_to_cpu(btree->u.external[j].disk_secno), le32_to_cpu(btree->u.external[j].length)); btree->n_used_nodes = i + 1; btree->n_free_nodes = nodes - btree->n_used_nodes; - btree->first_free = 8 + 12 * btree->n_used_nodes; + btree->first_free = cpu_to_le16(8 + 12 * btree->n_used_nodes); mark_buffer_dirty(bh); brelse(bh); } @@ -480,12 +480,12 @@ void hpfs_remove_fnode(struct super_block *s, fnode_secno fno) struct extended_attribute *ea_end; if (!(fnode = hpfs_map_fnode(s, fno, &bh))) return; if (!fnode->dirflag) hpfs_remove_btree(s, &fnode->btree); - else hpfs_remove_dtree(s, fnode->u.external[0].disk_secno); + else hpfs_remove_dtree(s, le32_to_cpu(fnode->u.external[0].disk_secno)); ea_end = fnode_end_ea(fnode); for (ea = fnode_ea(fnode); ea < ea_end; ea = next_ea(ea)) if (ea->indirect) hpfs_ea_remove(s, ea_sec(ea), ea->anode, ea_len(ea)); - hpfs_ea_ext_remove(s, fnode->ea_secno, fnode->ea_anode, fnode->ea_size_l); + hpfs_ea_ext_remove(s, le32_to_cpu(fnode->ea_secno), fnode->ea_anode, le32_to_cpu(fnode->ea_size_l)); brelse(bh); hpfs_free_sectors(s, fno, 1); } diff --git a/fs/hpfs/buffer.c b/fs/hpfs/buffer.c index 793cb9d943d2..9ecde27d1e29 100644 --- a/fs/hpfs/buffer.c +++ b/fs/hpfs/buffer.c @@ -9,22 +9,6 @@ #include <linux/slab.h> #include "hpfs_fn.h" -void hpfs_lock_creation(struct super_block *s) -{ -#ifdef DEBUG_LOCKS - printk("lock creation\n"); -#endif - mutex_lock(&hpfs_sb(s)->hpfs_creation_de); -} - -void hpfs_unlock_creation(struct super_block *s) -{ -#ifdef DEBUG_LOCKS - printk("unlock creation\n"); -#endif - mutex_unlock(&hpfs_sb(s)->hpfs_creation_de); -} - /* Map a sector into a buffer and return pointers to it and to the buffer. */ void *hpfs_map_sector(struct super_block *s, unsigned secno, struct buffer_head **bhp, @@ -32,6 +16,8 @@ void *hpfs_map_sector(struct super_block *s, unsigned secno, struct buffer_head { struct buffer_head *bh; + hpfs_lock_assert(s); + cond_resched(); *bhp = bh = sb_bread(s, secno); @@ -50,6 +36,8 @@ void *hpfs_get_sector(struct super_block *s, unsigned secno, struct buffer_head struct buffer_head *bh; /*return hpfs_map_sector(s, secno, bhp, 0);*/ + hpfs_lock_assert(s); + cond_resched(); if ((*bhp = bh = sb_getblk(s, secno)) != NULL) { @@ -70,6 +58,8 @@ void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffe struct buffer_head *bh; char *data; + hpfs_lock_assert(s); + cond_resched(); if (secno & 3) { @@ -125,6 +115,8 @@ void *hpfs_get_4sectors(struct super_block *s, unsigned secno, { cond_resched(); + hpfs_lock_assert(s); + if (secno & 3) { printk("HPFS: hpfs_get_4sectors: unaligned read\n"); return NULL; diff --git a/fs/hpfs/dir.c b/fs/hpfs/dir.c index b3d7c0ddb609..f46ae025bfb5 100644 --- a/fs/hpfs/dir.c +++ b/fs/hpfs/dir.c @@ -88,9 +88,9 @@ static int hpfs_readdir(struct file *filp, void *dirent, filldir_t filldir) hpfs_error(inode->i_sb, "not a directory, fnode %08lx", (unsigned long)inode->i_ino); } - if (hpfs_inode->i_dno != fno->u.external[0].disk_secno) { + if (hpfs_inode->i_dno != le32_to_cpu(fno->u.external[0].disk_secno)) { e = 1; - hpfs_error(inode->i_sb, "corrupted inode: i_dno == %08x, fnode -> dnode == %08x", hpfs_inode->i_dno, fno->u.external[0].disk_secno); + hpfs_error(inode->i_sb, "corrupted inode: i_dno == %08x, fnode -> dnode == %08x", hpfs_inode->i_dno, le32_to_cpu(fno->u.external[0].disk_secno)); } brelse(bh); if (e) { @@ -156,7 +156,7 @@ static int hpfs_readdir(struct file *filp, void *dirent, filldir_t filldir) goto again; } tempname = hpfs_translate_name(inode->i_sb, de->name, de->namelen, lc, de->not_8x3); - if (filldir(dirent, tempname, de->namelen, old_pos, de->fnode, DT_UNKNOWN) < 0) { + if (filldir(dirent, tempname, de->namelen, old_pos, le32_to_cpu(de->fnode), DT_UNKNOWN) < 0) { filp->f_pos = old_pos; if (tempname != de->name) kfree(tempname); hpfs_brelse4(&qbh); @@ -221,7 +221,7 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct name * Get inode number, what we're after. */ - ino = de->fnode; + ino = le32_to_cpu(de->fnode); /* * Go find or make an inode. @@ -236,7 +236,7 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct name hpfs_init_inode(result); if (de->directory) hpfs_read_inode(result); - else if (de->ea_size && hpfs_sb(dir->i_sb)->sb_eas) + else if (le32_to_cpu(de->ea_size) && hpfs_sb(dir->i_sb)->sb_eas) hpfs_read_inode(result); else { result->i_mode |= S_IFREG; @@ -250,8 +250,6 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct name hpfs_result = hpfs_i(result); if (!de->directory) hpfs_result->i_parent_dir = dir->i_ino; - hpfs_decide_conv(result, name, len); - if (de->has_acl || de->has_xtd_perm) if (!(dir->i_sb->s_flags & MS_RDONLY)) { hpfs_error(result->i_sb, "ACLs or XPERM found. This is probably HPFS386. This driver doesn't support it now. Send me some info on these structures"); goto bail1; @@ -263,19 +261,19 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct name */ if (!result->i_ctime.tv_sec) { - if (!(result->i_ctime.tv_sec = local_to_gmt(dir->i_sb, de->creation_date))) + if (!(result->i_ctime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(de->creation_date)))) result->i_ctime.tv_sec = 1; result->i_ctime.tv_nsec = 0; - result->i_mtime.tv_sec = local_to_gmt(dir->i_sb, de->write_date); + result->i_mtime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(de->write_date)); result->i_mtime.tv_nsec = 0; - result->i_atime.tv_sec = local_to_gmt(dir->i_sb, de->read_date); + result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(de->read_date)); result->i_atime.tv_nsec = 0; - hpfs_result->i_ea_size = de->ea_size; + hpfs_result->i_ea_size = le32_to_cpu(de->ea_size); if (!hpfs_result->i_ea_mode && de->read_only) result->i_mode &= ~0222; if (!de->directory) { if (result->i_size == -1) { - result->i_size = de->file_size; + result->i_size = le32_to_cpu(de->file_size); result->i_data.a_ops = &hpfs_aops; hpfs_i(result)->mmu_private = result->i_size; /* diff --git a/fs/hpfs/dnode.c b/fs/hpfs/dnode.c index 9b2ffadfc8c4..1e0e2ac30fd3 100644 --- a/fs/hpfs/dnode.c +++ b/fs/hpfs/dnode.c @@ -14,11 +14,11 @@ static loff_t get_pos(struct dnode *d, struct hpfs_dirent *fde) struct hpfs_dirent *de_end = dnode_end_de(d); int i = 1; for (de = dnode_first_de(d); de < de_end; de = de_next_de(de)) { - if (de == fde) return ((loff_t) d->self << 4) | (loff_t)i; + if (de == fde) return ((loff_t) le32_to_cpu(d->self) << 4) | (loff_t)i; i++; } printk("HPFS: get_pos: not_found\n"); - return ((loff_t)d->self << 4) | (loff_t)1; + return ((loff_t)le32_to_cpu(d->self) << 4) | (loff_t)1; } void hpfs_add_pos(struct inode *inode, loff_t *pos) @@ -130,29 +130,30 @@ static void set_last_pointer(struct super_block *s, struct dnode *d, dnode_secno { struct hpfs_dirent *de; if (!(de = dnode_last_de(d))) { - hpfs_error(s, "set_last_pointer: empty dnode %08x", d->self); + hpfs_error(s, "set_last_pointer: empty dnode %08x", le32_to_cpu(d->self)); return; } if (hpfs_sb(s)->sb_chk) { if (de->down) { hpfs_error(s, "set_last_pointer: dnode %08x has already last pointer %08x", - d->self, de_down_pointer(de)); + le32_to_cpu(d->self), de_down_pointer(de)); return; } - if (de->length != 32) { - hpfs_error(s, "set_last_pointer: bad last dirent in dnode %08x", d->self); + if (le16_to_cpu(de->length) != 32) { + hpfs_error(s, "set_last_pointer: bad last dirent in dnode %08x", le32_to_cpu(d->self)); return; } } if (ptr) { - if ((d->first_free += 4) > 2048) { - hpfs_error(s,"set_last_pointer: too long dnode %08x", d->self); - d->first_free -= 4; + d->first_free = cpu_to_le32(le32_to_cpu(d->first_free) + 4); + if (le32_to_cpu(d->first_free) > 2048) { + hpfs_error(s, "set_last_pointer: too long dnode %08x", le32_to_cpu(d->self)); + d->first_free = cpu_to_le32(le32_to_cpu(d->first_free) - 4); return; } - de->length = 36; + de->length = cpu_to_le16(36); de->down = 1; - *(dnode_secno *)((char *)de + 32) = ptr; + *(dnode_secno *)((char *)de + 32) = cpu_to_le32(ptr); } } @@ -168,7 +169,7 @@ struct hpfs_dirent *hpfs_add_de(struct super_block *s, struct dnode *d, for (de = dnode_first_de(d); de < de_end; de = de_next_de(de)) { int c = hpfs_compare_names(s, name, namelen, de->name, de->namelen, de->last); if (!c) { - hpfs_error(s, "name (%c,%d) already exists in dnode %08x", *name, namelen, d->self); + hpfs_error(s, "name (%c,%d) already exists in dnode %08x", *name, namelen, le32_to_cpu(d->self)); return NULL; } if (c < 0) break; @@ -176,15 +177,14 @@ struct hpfs_dirent *hpfs_add_de(struct super_block *s, struct dnode *d, memmove((char *)de + d_size, de, (char *)de_end - (char *)de); memset(de, 0, d_size); if (down_ptr) { - *(int *)((char *)de + d_size - 4) = down_ptr; + *(dnode_secno *)((char *)de + d_size - 4) = cpu_to_le32(down_ptr); de->down = 1; } - de->length = d_size; - if (down_ptr) de->down = 1; + de->length = cpu_to_le16(d_size); de->not_8x3 = hpfs_is_name_long(name, namelen); de->namelen = namelen; memcpy(de->name, name, namelen); - d->first_free += d_size; + d->first_free = cpu_to_le32(le32_to_cpu(d->first_free) + d_size); return de; } @@ -194,25 +194,25 @@ static void hpfs_delete_de(struct super_block *s, struct dnode *d, struct hpfs_dirent *de) { if (de->last) { - hpfs_error(s, "attempt to delete last dirent in dnode %08x", d->self); + hpfs_error(s, "attempt to delete last dirent in dnode %08x", le32_to_cpu(d->self)); return; } - d->first_free -= de->length; - memmove(de, de_next_de(de), d->first_free + (char *)d - (char *)de); + d->first_free = cpu_to_le32(le32_to_cpu(d->first_free) - le16_to_cpu(de->length)); + memmove(de, de_next_de(de), le32_to_cpu(d->first_free) + (char *)d - (char *)de); } static void fix_up_ptrs(struct super_block *s, struct dnode *d) { struct hpfs_dirent *de; struct hpfs_dirent *de_end = dnode_end_de(d); - dnode_secno dno = d->self; + dnode_secno dno = le32_to_cpu(d->self); for (de = dnode_first_de(d); de < de_end; de = de_next_de(de)) if (de->down) { struct quad_buffer_head qbh; struct dnode *dd; if ((dd = hpfs_map_dnode(s, de_down_pointer(de), &qbh))) { - if (dd->up != dno || dd->root_dnode) { - dd->up = dno; + if (le32_to_cpu(dd->up) != dno || dd->root_dnode) { + dd->up = cpu_to_le32(dno); dd->root_dnode = 0; hpfs_mark_4buffers_dirty(&qbh); } @@ -262,7 +262,7 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, kfree(nname); return 1; } - if (d->first_free + de_size(namelen, down_ptr) <= 2048) { + if (le32_to_cpu(d->first_free) + de_size(namelen, down_ptr) <= 2048) { loff_t t; copy_de(de=hpfs_add_de(i->i_sb, d, name, namelen, down_ptr), new_de); t = get_pos(d, de); @@ -286,11 +286,11 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, kfree(nname); return 1; } - memcpy(nd, d, d->first_free); + memcpy(nd, d, le32_to_cpu(d->first_free)); copy_de(de = hpfs_add_de(i->i_sb, nd, name, namelen, down_ptr), new_de); for_all_poss(i, hpfs_pos_ins, get_pos(nd, de), 1); h = ((char *)dnode_last_de(nd) - (char *)nd) / 2 + 10; - if (!(ad = hpfs_alloc_dnode(i->i_sb, d->up, &adno, &qbh1, 0))) { + if (!(ad = hpfs_alloc_dnode(i->i_sb, le32_to_cpu(d->up), &adno, &qbh1))) { hpfs_error(i->i_sb, "unable to alloc dnode - dnode tree will be corrupted"); hpfs_brelse4(&qbh); kfree(nd); @@ -313,20 +313,21 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, down_ptr = adno; set_last_pointer(i->i_sb, ad, de->down ? de_down_pointer(de) : 0); de = de_next_de(de); - memmove((char *)nd + 20, de, nd->first_free + (char *)nd - (char *)de); - nd->first_free -= (char *)de - (char *)nd - 20; - memcpy(d, nd, nd->first_free); + memmove((char *)nd + 20, de, le32_to_cpu(nd->first_free) + (char *)nd - (char *)de); + nd->first_free = cpu_to_le32(le32_to_cpu(nd->first_free) - ((char *)de - (char *)nd - 20)); + memcpy(d, nd, le32_to_cpu(nd->first_free)); for_all_poss(i, hpfs_pos_del, (loff_t)dno << 4, pos); fix_up_ptrs(i->i_sb, ad); if (!d->root_dnode) { - dno = ad->up = d->up; + ad->up = d->up; + dno = le32_to_cpu(ad->up); hpfs_mark_4buffers_dirty(&qbh); hpfs_brelse4(&qbh); hpfs_mark_4buffers_dirty(&qbh1); hpfs_brelse4(&qbh1); goto go_up; } - if (!(rd = hpfs_alloc_dnode(i->i_sb, d->up, &rdno, &qbh2, 0))) { + if (!(rd = hpfs_alloc_dnode(i->i_sb, le32_to_cpu(d->up), &rdno, &qbh2))) { hpfs_error(i->i_sb, "unable to alloc dnode - dnode tree will be corrupted"); hpfs_brelse4(&qbh); hpfs_brelse4(&qbh1); @@ -338,7 +339,7 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, i->i_blocks += 4; rd->root_dnode = 1; rd->up = d->up; - if (!(fnode = hpfs_map_fnode(i->i_sb, d->up, &bh))) { + if (!(fnode = hpfs_map_fnode(i->i_sb, le32_to_cpu(d->up), &bh))) { hpfs_free_dnode(i->i_sb, rdno); hpfs_brelse4(&qbh); hpfs_brelse4(&qbh1); @@ -347,10 +348,11 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, kfree(nname); return 1; } - fnode->u.external[0].disk_secno = rdno; + fnode->u.external[0].disk_secno = cpu_to_le32(rdno); mark_buffer_dirty(bh); brelse(bh); - d->up = ad->up = hpfs_i(i)->i_dno = rdno; + hpfs_i(i)->i_dno = rdno; + d->up = ad->up = cpu_to_le32(rdno); d->root_dnode = ad->root_dnode = 0; hpfs_mark_4buffers_dirty(&qbh); hpfs_brelse4(&qbh); @@ -373,7 +375,7 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, int hpfs_add_dirent(struct inode *i, const unsigned char *name, unsigned namelen, - struct hpfs_dirent *new_de, int cdepth) + struct hpfs_dirent *new_de) { struct hpfs_inode_info *hpfs_inode = hpfs_i(i); struct dnode *d; @@ -403,7 +405,6 @@ int hpfs_add_dirent(struct inode *i, } } hpfs_brelse4(&qbh); - if (!cdepth) hpfs_lock_creation(i->i_sb); if (hpfs_check_free_dnodes(i->i_sb, FREE_DNODES_ADD)) { c = 1; goto ret; @@ -411,7 +412,6 @@ int hpfs_add_dirent(struct inode *i, i->i_version++; c = hpfs_add_to_dnode(i, dno, name, namelen, new_de, 0); ret: - if (!cdepth) hpfs_unlock_creation(i->i_sb); return c; } @@ -437,9 +437,9 @@ static secno move_to_top(struct inode *i, dnode_secno from, dnode_secno to) return 0; if (!(dnode = hpfs_map_dnode(i->i_sb, dno, &qbh))) return 0; if (hpfs_sb(i->i_sb)->sb_chk) { - if (dnode->up != chk_up) { + if (le32_to_cpu(dnode->up) != chk_up) { hpfs_error(i->i_sb, "move_to_top: up pointer from %08x should be %08x, is %08x", - dno, chk_up, dnode->up); + dno, chk_up, le32_to_cpu(dnode->up)); hpfs_brelse4(&qbh); return 0; } @@ -455,7 +455,7 @@ static secno move_to_top(struct inode *i, dnode_secno from, dnode_secno to) hpfs_brelse4(&qbh); } while (!(de = dnode_pre_last_de(dnode))) { - dnode_secno up = dnode->up; + dnode_secno up = le32_to_cpu(dnode->up); hpfs_brelse4(&qbh); hpfs_free_dnode(i->i_sb, dno); i->i_size -= 2048; @@ -474,8 +474,8 @@ static secno move_to_top(struct inode *i, dnode_secno from, dnode_secno to) hpfs_brelse4(&qbh); return 0; } - dnode->first_free -= 4; - de->length -= 4; + dnode->first_free = cpu_to_le32(le32_to_cpu(dnode->first_free) - 4); + de->length = cpu_to_le16(le16_to_cpu(de->length) - 4); de->down = 0; hpfs_mark_4buffers_dirty(&qbh); dno = up; @@ -483,12 +483,12 @@ static secno move_to_top(struct inode *i, dnode_secno from, dnode_secno to) t = get_pos(dnode, de); for_all_poss(i, hpfs_pos_subst, t, 4); for_all_poss(i, hpfs_pos_subst, t + 1, 5); - if (!(nde = kmalloc(de->length, GFP_NOFS))) { + if (!(nde = kmalloc(le16_to_cpu(de->length), GFP_NOFS))) { hpfs_error(i->i_sb, "out of memory for dirent - directory will be corrupted"); hpfs_brelse4(&qbh); return 0; } - memcpy(nde, de, de->length); + memcpy(nde, de, le16_to_cpu(de->length)); ddno = de->down ? de_down_pointer(de) : 0; hpfs_delete_de(i->i_sb, dnode, de); set_last_pointer(i->i_sb, dnode, ddno); @@ -517,11 +517,11 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) try_it_again: if (hpfs_stop_cycles(i->i_sb, dno, &c1, &c2, "delete_empty_dnode")) return; if (!(dnode = hpfs_map_dnode(i->i_sb, dno, &qbh))) return; - if (dnode->first_free > 56) goto end; - if (dnode->first_free == 52 || dnode->first_free == 56) { + if (le32_to_cpu(dnode->first_free) > 56) goto end; + if (le32_to_cpu(dnode->first_free) == 52 || le32_to_cpu(dnode->first_free) == 56) { struct hpfs_dirent *de_end; int root = dnode->root_dnode; - up = dnode->up; + up = le32_to_cpu(dnode->up); de = dnode_first_de(dnode); down = de->down ? de_down_pointer(de) : 0; if (hpfs_sb(i->i_sb)->sb_chk) if (root && !down) { @@ -545,13 +545,13 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) return; } if ((d1 = hpfs_map_dnode(i->i_sb, down, &qbh1))) { - d1->up = up; + d1->up = cpu_to_le32(up); d1->root_dnode = 1; hpfs_mark_4buffers_dirty(&qbh1); hpfs_brelse4(&qbh1); } if ((fnode = hpfs_map_fnode(i->i_sb, up, &bh))) { - fnode->u.external[0].disk_secno = down; + fnode->u.external[0].disk_secno = cpu_to_le32(down); mark_buffer_dirty(bh); brelse(bh); } @@ -570,22 +570,22 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) for_all_poss(i, hpfs_pos_subst, ((loff_t)dno << 4) | 1, ((loff_t)up << 4) | p); if (!down) { de->down = 0; - de->length -= 4; - dnode->first_free -= 4; + de->length = cpu_to_le16(le16_to_cpu(de->length) - 4); + dnode->first_free = cpu_to_le32(le32_to_cpu(dnode->first_free) - 4); memmove(de_next_de(de), (char *)de_next_de(de) + 4, - (char *)dnode + dnode->first_free - (char *)de_next_de(de)); + (char *)dnode + le32_to_cpu(dnode->first_free) - (char *)de_next_de(de)); } else { struct dnode *d1; struct quad_buffer_head qbh1; - *(dnode_secno *) ((void *) de + de->length - 4) = down; + *(dnode_secno *) ((void *) de + le16_to_cpu(de->length) - 4) = down; if ((d1 = hpfs_map_dnode(i->i_sb, down, &qbh1))) { - d1->up = up; + d1->up = cpu_to_le32(up); hpfs_mark_4buffers_dirty(&qbh1); hpfs_brelse4(&qbh1); } } } else { - hpfs_error(i->i_sb, "delete_empty_dnode: dnode %08x, first_free == %03x", dno, dnode->first_free); + hpfs_error(i->i_sb, "delete_empty_dnode: dnode %08x, first_free == %03x", dno, le32_to_cpu(dnode->first_free)); goto end; } @@ -596,18 +596,18 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) struct quad_buffer_head qbh1; if (!de_next->down) goto endm; ndown = de_down_pointer(de_next); - if (!(de_cp = kmalloc(de->length, GFP_NOFS))) { + if (!(de_cp = kmalloc(le16_to_cpu(de->length), GFP_NOFS))) { printk("HPFS: out of memory for dtree balancing\n"); goto endm; } - memcpy(de_cp, de, de->length); + memcpy(de_cp, de, le16_to_cpu(de->length)); hpfs_delete_de(i->i_sb, dnode, de); hpfs_mark_4buffers_dirty(&qbh); hpfs_brelse4(&qbh); for_all_poss(i, hpfs_pos_subst, ((loff_t)up << 4) | p, 4); for_all_poss(i, hpfs_pos_del, ((loff_t)up << 4) | p, 1); if (de_cp->down) if ((d1 = hpfs_map_dnode(i->i_sb, de_down_pointer(de_cp), &qbh1))) { - d1->up = ndown; + d1->up = cpu_to_le32(ndown); hpfs_mark_4buffers_dirty(&qbh1); hpfs_brelse4(&qbh1); } @@ -635,7 +635,7 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) struct hpfs_dirent *del = dnode_last_de(d1); dlp = del->down ? de_down_pointer(del) : 0; if (!dlp && down) { - if (d1->first_free > 2044) { + if (le32_to_cpu(d1->first_free) > 2044) { if (hpfs_sb(i->i_sb)->sb_chk >= 2) { printk("HPFS: warning: unbalanced dnode tree, see hpfs.txt 4 more info\n"); printk("HPFS: warning: terminating balancing operation\n"); @@ -647,38 +647,38 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) printk("HPFS: warning: unbalanced dnode tree, see hpfs.txt 4 more info\n"); printk("HPFS: warning: goin'on\n"); } - del->length += 4; + del->length = cpu_to_le16(le16_to_cpu(del->length) + 4); del->down = 1; - d1->first_free += 4; + d1->first_free = cpu_to_le32(le32_to_cpu(d1->first_free) + 4); } if (dlp && !down) { - del->length -= 4; + del->length = cpu_to_le16(le16_to_cpu(del->length) - 4); del->down = 0; - d1->first_free -= 4; + d1->first_free = cpu_to_le32(le32_to_cpu(d1->first_free) - 4); } else if (down) - *(dnode_secno *) ((void *) del + del->length - 4) = down; + *(dnode_secno *) ((void *) del + le16_to_cpu(del->length) - 4) = cpu_to_le32(down); } else goto endm; - if (!(de_cp = kmalloc(de_prev->length, GFP_NOFS))) { + if (!(de_cp = kmalloc(le16_to_cpu(de_prev->length), GFP_NOFS))) { printk("HPFS: out of memory for dtree balancing\n"); hpfs_brelse4(&qbh1); goto endm; } hpfs_mark_4buffers_dirty(&qbh1); hpfs_brelse4(&qbh1); - memcpy(de_cp, de_prev, de_prev->length); + memcpy(de_cp, de_prev, le16_to_cpu(de_prev->length)); hpfs_delete_de(i->i_sb, dnode, de_prev); if (!de_prev->down) { - de_prev->length += 4; + de_prev->length = cpu_to_le16(le16_to_cpu(de_prev->length) + 4); de_prev->down = 1; - dnode->first_free += 4; + dnode->first_free = cpu_to_le32(le32_to_cpu(dnode->first_free) + 4); } - *(dnode_secno *) ((void *) de_prev + de_prev->length - 4) = ndown; + *(dnode_secno *) ((void *) de_prev + le16_to_cpu(de_prev->length) - 4) = cpu_to_le32(ndown); hpfs_mark_4buffers_dirty(&qbh); hpfs_brelse4(&qbh); for_all_poss(i, hpfs_pos_subst, ((loff_t)up << 4) | (p - 1), 4); for_all_poss(i, hpfs_pos_subst, ((loff_t)up << 4) | p, ((loff_t)up << 4) | (p - 1)); if (down) if ((d1 = hpfs_map_dnode(i->i_sb, de_down_pointer(de), &qbh1))) { - d1->up = ndown; + d1->up = cpu_to_le32(ndown); hpfs_mark_4buffers_dirty(&qbh1); hpfs_brelse4(&qbh1); } @@ -701,7 +701,6 @@ int hpfs_remove_dirent(struct inode *i, dnode_secno dno, struct hpfs_dirent *de, { struct dnode *dnode = qbh->data; dnode_secno down = 0; - int lock = 0; loff_t t; if (de->first || de->last) { hpfs_error(i->i_sb, "hpfs_remove_dirent: attempt to delete first or last dirent in dnode %08x", dno); @@ -710,11 +709,8 @@ int hpfs_remove_dirent(struct inode *i, dnode_secno dno, struct hpfs_dirent *de, } if (de->down) down = de_down_pointer(de); if (depth && (de->down || (de == dnode_first_de(dnode) && de_next_de(de)->last))) { - lock = 1; - hpfs_lock_creation(i->i_sb); if (hpfs_check_free_dnodes(i->i_sb, FREE_DNODES_DEL)) { hpfs_brelse4(qbh); - hpfs_unlock_creation(i->i_sb); return 2; } } @@ -727,11 +723,9 @@ int hpfs_remove_dirent(struct inode *i, dnode_secno dno, struct hpfs_dirent *de, dnode_secno a = move_to_top(i, down, dno); for_all_poss(i, hpfs_pos_subst, 5, t); if (a) delete_empty_dnode(i, a); - if (lock) hpfs_unlock_creation(i->i_sb); return !a; } delete_empty_dnode(i, dno); - if (lock) hpfs_unlock_creation(i->i_sb); return 0; } @@ -751,8 +745,8 @@ void hpfs_count_dnodes(struct super_block *s, dnode_secno dno, int *n_dnodes, ptr = 0; go_up: if (!(dnode = hpfs_map_dnode(s, dno, &qbh))) return; - if (hpfs_sb(s)->sb_chk) if (odno && odno != -1 && dnode->up != odno) - hpfs_error(s, "hpfs_count_dnodes: bad up pointer; dnode %08x, down %08x points to %08x", odno, dno, dnode->up); + if (hpfs_sb(s)->sb_chk) if (odno && odno != -1 && le32_to_cpu(dnode->up) != odno) + hpfs_error(s, "hpfs_count_dnodes: bad up pointer; dnode %08x, down %08x points to %08x", odno, dno, le32_to_cpu(dnode->up)); de = dnode_first_de(dnode); if (ptr) while(1) { if (de->down) if (de_down_pointer(de) == ptr) goto process_de; @@ -776,7 +770,7 @@ void hpfs_count_dnodes(struct super_block *s, dnode_secno dno, int *n_dnodes, if (!de->first && !de->last && n_items) (*n_items)++; if ((de = de_next_de(de)) < dnode_end_de(dnode)) goto next_de; ptr = dno; - dno = dnode->up; + dno = le32_to_cpu(dnode->up); if (dnode->root_dnode) { hpfs_brelse4(&qbh); return; @@ -824,8 +818,8 @@ dnode_secno hpfs_de_as_down_as_possible(struct super_block *s, dnode_secno dno) return d; if (!(de = map_nth_dirent(s, d, 1, &qbh, NULL))) return dno; if (hpfs_sb(s)->sb_chk) - if (up && ((struct dnode *)qbh.data)->up != up) - hpfs_error(s, "hpfs_de_as_down_as_possible: bad up pointer; dnode %08x, down %08x points to %08x", up, d, ((struct dnode *)qbh.data)->up); + if (up && le32_to_cpu(((struct dnode *)qbh.data)->up) != up) + hpfs_error(s, "hpfs_de_as_down_as_possible: bad up pointer; dnode %08x, down %08x points to %08x", up, d, le32_to_cpu(((struct dnode *)qbh.data)->up)); if (!de->down) { hpfs_brelse4(&qbh); return d; @@ -874,7 +868,7 @@ struct hpfs_dirent *map_pos_dirent(struct inode *inode, loff_t *posp, /* Going up */ if (dnode->root_dnode) goto bail; - if (!(up_dnode = hpfs_map_dnode(inode->i_sb, dnode->up, &qbh0))) + if (!(up_dnode = hpfs_map_dnode(inode->i_sb, le32_to_cpu(dnode->up), &qbh0))) goto bail; end_up_de = dnode_end_de(up_dnode); @@ -882,16 +876,16 @@ struct hpfs_dirent *map_pos_dirent(struct inode *inode, loff_t *posp, for (up_de = dnode_first_de(up_dnode); up_de < end_up_de; up_de = de_next_de(up_de)) { if (!(++c & 077)) hpfs_error(inode->i_sb, - "map_pos_dirent: pos crossed dnode boundary; dnode = %08x", dnode->up); + "map_pos_dirent: pos crossed dnode boundary; dnode = %08x", le32_to_cpu(dnode->up)); if (up_de->down && de_down_pointer(up_de) == dno) { - *posp = ((loff_t) dnode->up << 4) + c; + *posp = ((loff_t) le32_to_cpu(dnode->up) << 4) + c; hpfs_brelse4(&qbh0); return de; } } hpfs_error(inode->i_sb, "map_pos_dirent: pointer to dnode %08x not found in parent dnode %08x", - dno, dnode->up); + dno, le32_to_cpu(dnode->up)); hpfs_brelse4(&qbh0); bail: @@ -1017,17 +1011,17 @@ struct hpfs_dirent *map_fnode_dirent(struct super_block *s, fnode_secno fno, /*name2[15] = 0xff;*/ name1len = 15; name2len = 256; } - if (!(upf = hpfs_map_fnode(s, f->up, &bh))) { + if (!(upf = hpfs_map_fnode(s, le32_to_cpu(f->up), &bh))) { kfree(name2); return NULL; } if (!upf->dirflag) { brelse(bh); - hpfs_error(s, "fnode %08x has non-directory parent %08x", fno, f->up); + hpfs_error(s, "fnode %08x has non-directory parent %08x", fno, le32_to_cpu(f->up)); kfree(name2); return NULL; } - dno = upf->u.external[0].disk_secno; + dno = le32_to_cpu(upf->u.external[0].disk_secno); brelse(bh); go_down: downd = 0; @@ -1049,7 +1043,7 @@ struct hpfs_dirent *map_fnode_dirent(struct super_block *s, fnode_secno fno, return NULL; } next_de: - if (de->fnode == fno) { + if (le32_to_cpu(de->fnode) == fno) { kfree(name2); return de; } @@ -1065,7 +1059,7 @@ struct hpfs_dirent *map_fnode_dirent(struct super_block *s, fnode_secno fno, goto go_down; } f: - if (de->fnode == fno) { + if (le32_to_cpu(de->fnode) == fno) { kfree(name2); return de; } @@ -1074,7 +1068,7 @@ struct hpfs_dirent *map_fnode_dirent(struct super_block *s, fnode_secno fno, if ((de = de_next_de(de)) < de_end) goto next_de; if (d->root_dnode) goto not_found; downd = dno; - dno = d->up; + dno = le32_to_cpu(d->up); hpfs_brelse4(qbh); if (hpfs_sb(s)->sb_chk) if (hpfs_stop_cycles(s, downd, &d1, &d2, "map_fnode_dirent #2")) { diff --git a/fs/hpfs/ea.c b/fs/hpfs/ea.c index 45e53d972b42..d8b84d113c89 100644 --- a/fs/hpfs/ea.c +++ b/fs/hpfs/ea.c @@ -24,7 +24,7 @@ void hpfs_ea_ext_remove(struct super_block *s, secno a, int ano, unsigned len) } if (hpfs_ea_read(s, a, ano, pos, 4, ex)) return; if (ea->indirect) { - if (ea->valuelen != 8) { + if (ea_valuelen(ea) != 8) { hpfs_error(s, "ea->indirect set while ea->valuelen!=8, %s %08x, pos %08x", ano ? "anode" : "sectors", a, pos); return; @@ -33,7 +33,7 @@ void hpfs_ea_ext_remove(struct super_block *s, secno a, int ano, unsigned len) return; hpfs_ea_remove(s, ea_sec(ea), ea->anode, ea_len(ea)); } - pos += ea->namelen + ea->valuelen + 5; + pos += ea->namelen + ea_valuelen(ea) + 5; } if (!ano) hpfs_free_sectors(s, a, (len+511) >> 9); else { @@ -76,24 +76,24 @@ int hpfs_read_ea(struct super_block *s, struct fnode *fnode, char *key, unsigned pos; int ano, len; secno a; + char ex[4 + 255 + 1 + 8]; struct extended_attribute *ea; struct extended_attribute *ea_end = fnode_end_ea(fnode); for (ea = fnode_ea(fnode); ea < ea_end; ea = next_ea(ea)) if (!strcmp(ea->name, key)) { if (ea->indirect) goto indirect; - if (ea->valuelen >= size) + if (ea_valuelen(ea) >= size) return -EINVAL; - memcpy(buf, ea_data(ea), ea->valuelen); - buf[ea->valuelen] = 0; + memcpy(buf, ea_data(ea), ea_valuelen(ea)); + buf[ea_valuelen(ea)] = 0; return 0; } - a = fnode->ea_secno; - len = fnode->ea_size_l; + a = le32_to_cpu(fnode->ea_secno); + len = le32_to_cpu(fnode->ea_size_l); ano = fnode->ea_anode; pos = 0; while (pos < len) { - char ex[4 + 255 + 1 + 8]; ea = (struct extended_attribute *)ex; if (pos + 4 > len) { hpfs_error(s, "EAs don't end correctly, %s %08x, len %08x", @@ -106,14 +106,14 @@ int hpfs_read_ea(struct super_block *s, struct fnode *fnode, char *key, if (!strcmp(ea->name, key)) { if (ea->indirect) goto indirect; - if (ea->valuelen >= size) + if (ea_valuelen(ea) >= size) return -EINVAL; - if (hpfs_ea_read(s, a, ano, pos + 4 + ea->namelen + 1, ea->valuelen, buf)) + if (hpfs_ea_read(s, a, ano, pos + 4 + ea->namelen + 1, ea_valuelen(ea), buf)) return -EIO; - buf[ea->valuelen] = 0; + buf[ea_valuelen(ea)] = 0; return 0; } - pos += ea->namelen + ea->valuelen + 5; + pos += ea->namelen + ea_valuelen(ea) + 5; } return -ENOENT; indirect: @@ -138,16 +138,16 @@ char *hpfs_get_ea(struct super_block *s, struct fnode *fnode, char *key, int *si if (!strcmp(ea->name, key)) { if (ea->indirect) return get_indirect_ea(s, ea->anode, ea_sec(ea), *size = ea_len(ea)); - if (!(ret = kmalloc((*size = ea->valuelen) + 1, GFP_NOFS))) { + if (!(ret = kmalloc((*size = ea_valuelen(ea)) + 1, GFP_NOFS))) { printk("HPFS: out of memory for EA\n"); return NULL; } - memcpy(ret, ea_data(ea), ea->valuelen); - ret[ea->valuelen] = 0; + memcpy(ret, ea_data(ea), ea_valuelen(ea)); + ret[ea_valuelen(ea)] = 0; return ret; } - a = fnode->ea_secno; - len = fnode->ea_size_l; + a = le32_to_cpu(fnode->ea_secno); + len = le32_to_cpu(fnode->ea_size_l); ano = fnode->ea_anode; pos = 0; while (pos < len) { @@ -164,18 +164,18 @@ char *hpfs_get_ea(struct super_block *s, struct fnode *fnode, char *key, int *si if (!strcmp(ea->name, key)) { if (ea->indirect) return get_indirect_ea(s, ea->anode, ea_sec(ea), *size = ea_len(ea)); - if (!(ret = kmalloc((*size = ea->valuelen) + 1, GFP_NOFS))) { + if (!(ret = kmalloc((*size = ea_valuelen(ea)) + 1, GFP_NOFS))) { printk("HPFS: out of memory for EA\n"); return NULL; } - if (hpfs_ea_read(s, a, ano, pos + 4 + ea->namelen + 1, ea->valuelen, ret)) { + if (hpfs_ea_read(s, a, ano, pos + 4 + ea->namelen + 1, ea_valuelen(ea), ret)) { kfree(ret); return NULL; } - ret[ea->valuelen] = 0; + ret[ea_valuelen(ea)] = 0; return ret; } - pos += ea->namelen + ea->valuelen + 5; + pos += ea->namelen + ea_valuelen(ea) + 5; } return NULL; } @@ -202,13 +202,13 @@ void hpfs_set_ea(struct inode *inode, struct fnode *fnode, const char *key, if (ea->indirect) { if (ea_len(ea) == size) set_indirect_ea(s, ea->anode, ea_sec(ea), data, size); - } else if (ea->valuelen == size) { + } else if (ea_valuelen(ea) == size) { memcpy(ea_data(ea), data, size); } return; } - a = fnode->ea_secno; - len = fnode->ea_size_l; + a = le32_to_cpu(fnode->ea_secno); + len = le32_to_cpu(fnode->ea_size_l); ano = fnode->ea_anode; pos = 0; while (pos < len) { @@ -228,68 +228,70 @@ void hpfs_set_ea(struct inode *inode, struct fnode *fnode, const char *key, set_indirect_ea(s, ea->anode, ea_sec(ea), data, size); } else { - if (ea->valuelen == size) + if (ea_valuelen(ea) == size) hpfs_ea_write(s, a, ano, pos + 4 + ea->namelen + 1, size, data); } return; } - pos += ea->namelen + ea->valuelen + 5; + pos += ea->namelen + ea_valuelen(ea) + 5; } - if (!fnode->ea_offs) { - /*if (fnode->ea_size_s) { + if (!le16_to_cpu(fnode->ea_offs)) { + /*if (le16_to_cpu(fnode->ea_size_s)) { hpfs_error(s, "fnode %08x: ea_size_s == %03x, ea_offs == 0", - inode->i_ino, fnode->ea_size_s); + inode->i_ino, le16_to_cpu(fnode->ea_size_s)); return; }*/ - fnode->ea_offs = 0xc4; + fnode->ea_offs = cpu_to_le16(0xc4); } - if (fnode->ea_offs < 0xc4 || fnode->ea_offs + fnode->acl_size_s + fnode->ea_size_s > 0x200) { + if (le16_to_cpu(fnode->ea_offs) < 0xc4 || le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s) + le16_to_cpu(fnode->ea_size_s) > 0x200) { hpfs_error(s, "fnode %08lx: ea_offs == %03x, ea_size_s == %03x", (unsigned long)inode->i_ino, - fnode->ea_offs, fnode->ea_size_s); + le32_to_cpu(fnode->ea_offs), le16_to_cpu(fnode->ea_size_s)); return; } - if ((fnode->ea_size_s || !fnode->ea_size_l) && - fnode->ea_offs + fnode->acl_size_s + fnode->ea_size_s + strlen(key) + size + 5 <= 0x200) { + if ((le16_to_cpu(fnode->ea_size_s) || !le32_to_cpu(fnode->ea_size_l)) && + le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s) + le16_to_cpu(fnode->ea_size_s) + strlen(key) + size + 5 <= 0x200) { ea = fnode_end_ea(fnode); *(char *)ea = 0; ea->namelen = strlen(key); - ea->valuelen = size; + ea->valuelen_lo = size; + ea->valuelen_hi = size >> 8; strcpy(ea->name, key); memcpy(ea_data(ea), data, size); - fnode->ea_size_s += strlen(key) + size + 5; + fnode->ea_size_s = cpu_to_le16(le16_to_cpu(fnode->ea_size_s) + strlen(key) + size + 5); goto ret; } /* Most the code here is 99.9993422% unused. I hope there are no bugs. But what .. HPFS.IFS has also bugs in ea management. */ - if (fnode->ea_size_s && !fnode->ea_size_l) { + if (le16_to_cpu(fnode->ea_size_s) && !le32_to_cpu(fnode->ea_size_l)) { secno n; struct buffer_head *bh; char *data; - if (!(n = hpfs_alloc_sector(s, fno, 1, 0, 1))) return; + if (!(n = hpfs_alloc_sector(s, fno, 1, 0))) return; if (!(data = hpfs_get_sector(s, n, &bh))) { hpfs_free_sectors(s, n, 1); return; } - memcpy(data, fnode_ea(fnode), fnode->ea_size_s); - fnode->ea_size_l = fnode->ea_size_s; - fnode->ea_size_s = 0; - fnode->ea_secno = n; - fnode->ea_anode = 0; + memcpy(data, fnode_ea(fnode), le16_to_cpu(fnode->ea_size_s)); + fnode->ea_size_l = cpu_to_le32(le16_to_cpu(fnode->ea_size_s)); + fnode->ea_size_s = cpu_to_le16(0); + fnode->ea_secno = cpu_to_le32(n); + fnode->ea_anode = cpu_to_le32(0); mark_buffer_dirty(bh); brelse(bh); } - pos = fnode->ea_size_l + 5 + strlen(key) + size; - len = (fnode->ea_size_l + 511) >> 9; + pos = le32_to_cpu(fnode->ea_size_l) + 5 + strlen(key) + size; + len = (le32_to_cpu(fnode->ea_size_l) + 511) >> 9; if (pos >= 30000) goto bail; while (((pos + 511) >> 9) > len) { if (!len) { - if (!(fnode->ea_secno = hpfs_alloc_sector(s, fno, 1, 0, 1))) - goto bail; + secno q = hpfs_alloc_sector(s, fno, 1, 0); + if (!q) goto bail; + fnode->ea_secno = cpu_to_le32(q); fnode->ea_anode = 0; len++; } else if (!fnode->ea_anode) { - if (hpfs_alloc_if_possible(s, fnode->ea_secno + len)) { + if (hpfs_alloc_if_possible(s, le32_to_cpu(fnode->ea_secno) + len)) { len++; } else { /* Aargh... don't know how to create ea anodes :-( */ @@ -298,26 +300,26 @@ void hpfs_set_ea(struct inode *inode, struct fnode *fnode, const char *key, anode_secno a_s; if (!(anode = hpfs_alloc_anode(s, fno, &a_s, &bh))) goto bail; - anode->up = fno; + anode->up = cpu_to_le32(fno); anode->btree.fnode_parent = 1; anode->btree.n_free_nodes--; anode->btree.n_used_nodes++; - anode->btree.first_free += 12; - anode->u.external[0].disk_secno = fnode->ea_secno; - anode->u.external[0].file_secno = 0; - anode->u.external[0].length = len; + anode->btree.first_free = cpu_to_le16(le16_to_cpu(anode->btree.first_free) + 12); + anode->u.external[0].disk_secno = cpu_to_le32(le32_to_cpu(fnode->ea_secno)); + anode->u.external[0].file_secno = cpu_to_le32(0); + anode->u.external[0].length = cpu_to_le32(len); mark_buffer_dirty(bh); brelse(bh); fnode->ea_anode = 1; - fnode->ea_secno = a_s;*/ + fnode->ea_secno = cpu_to_le32(a_s);*/ secno new_sec; int i; - if (!(new_sec = hpfs_alloc_sector(s, fno, 1, 1 - ((pos + 511) >> 9), 1))) + if (!(new_sec = hpfs_alloc_sector(s, fno, 1, 1 - ((pos + 511) >> 9)))) goto bail; for (i = 0; i < len; i++) { struct buffer_head *bh1, *bh2; void *b1, *b2; - if (!(b1 = hpfs_map_sector(s, fnode->ea_secno + i, &bh1, len - i - 1))) { + if (!(b1 = hpfs_map_sector(s, le32_to_cpu(fnode->ea_secno) + i, &bh1, len - i - 1))) { hpfs_free_sectors(s, new_sec, (pos + 511) >> 9); goto bail; } @@ -331,13 +333,13 @@ void hpfs_set_ea(struct inode *inode, struct fnode *fnode, const char *key, mark_buffer_dirty(bh2); brelse(bh2); } - hpfs_free_sectors(s, fnode->ea_secno, len); - fnode->ea_secno = new_sec; + hpfs_free_sectors(s, le32_to_cpu(fnode->ea_secno), len); + fnode->ea_secno = cpu_to_le32(new_sec); len = (pos + 511) >> 9; } } if (fnode->ea_anode) { - if (hpfs_add_sector_to_btree(s, fnode->ea_secno, + if (hpfs_add_sector_to_btree(s, le32_to_cpu(fnode->ea_secno), 0, len) != -1) { len++; } else { @@ -349,17 +351,17 @@ void hpfs_set_ea(struct inode *inode, struct fnode *fnode, const char *key, h[1] = strlen(key); h[2] = size & 0xff; h[3] = size >> 8; - if (hpfs_ea_write(s, fnode->ea_secno, fnode->ea_anode, fnode->ea_size_l, 4, h)) goto bail; - if (hpfs_ea_write(s, fnode->ea_secno, fnode->ea_anode, fnode->ea_size_l + 4, h[1] + 1, key)) goto bail; - if (hpfs_ea_write(s, fnode->ea_secno, fnode->ea_anode, fnode->ea_size_l + 5 + h[1], size, data)) goto bail; - fnode->ea_size_l = pos; + if (hpfs_ea_write(s, le32_to_cpu(fnode->ea_secno), fnode->ea_anode, le32_to_cpu(fnode->ea_size_l), 4, h)) goto bail; + if (hpfs_ea_write(s, le32_to_cpu(fnode->ea_secno), fnode->ea_anode, le32_to_cpu(fnode->ea_size_l) + 4, h[1] + 1, key)) goto bail; + if (hpfs_ea_write(s, le32_to_cpu(fnode->ea_secno), fnode->ea_anode, le32_to_cpu(fnode->ea_size_l) + 5 + h[1], size, data)) goto bail; + fnode->ea_size_l = cpu_to_le32(pos); ret: hpfs_i(inode)->i_ea_size += 5 + strlen(key) + size; return; bail: - if (fnode->ea_secno) - if (fnode->ea_anode) hpfs_truncate_btree(s, fnode->ea_secno, 1, (fnode->ea_size_l + 511) >> 9); - else hpfs_free_sectors(s, fnode->ea_secno + ((fnode->ea_size_l + 511) >> 9), len - ((fnode->ea_size_l + 511) >> 9)); - else fnode->ea_secno = fnode->ea_size_l = 0; + if (le32_to_cpu(fnode->ea_secno)) + if (fnode->ea_anode) hpfs_truncate_btree(s, le32_to_cpu(fnode->ea_secno), 1, (le32_to_cpu(fnode->ea_size_l) + 511) >> 9); + else hpfs_free_sectors(s, le32_to_cpu(fnode->ea_secno) + ((le32_to_cpu(fnode->ea_size_l) + 511) >> 9), len - ((le32_to_cpu(fnode->ea_size_l) + 511) >> 9)); + else fnode->ea_secno = fnode->ea_size_l = cpu_to_le32(0); } diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c index 9b9eb6933e43..89c500ee5213 100644 --- a/fs/hpfs/file.c +++ b/fs/hpfs/file.c @@ -20,8 +20,8 @@ static int hpfs_file_release(struct inode *inode, struct file *file) int hpfs_file_fsync(struct file *file, int datasync) { - /*return file_fsync(file, datasync);*/ - return 0; /* Don't fsync :-) */ + struct inode *inode = file->f_mapping->host; + return sync_blockdev(inode->i_sb->s_bdev); } /* @@ -48,38 +48,46 @@ static secno hpfs_bmap(struct inode *inode, unsigned file_secno) static void hpfs_truncate(struct inode *i) { if (IS_IMMUTABLE(i)) return /*-EPERM*/; - hpfs_lock(i->i_sb); + hpfs_lock_assert(i->i_sb); + hpfs_i(i)->i_n_secs = 0; i->i_blocks = 1 + ((i->i_size + 511) >> 9); hpfs_i(i)->mmu_private = i->i_size; hpfs_truncate_btree(i->i_sb, i->i_ino, 1, ((i->i_size + 511) >> 9)); hpfs_write_inode(i); hpfs_i(i)->i_n_secs = 0; - hpfs_unlock(i->i_sb); } static int hpfs_get_block(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create) { + int r; secno s; + hpfs_lock(inode->i_sb); s = hpfs_bmap(inode, iblock); if (s) { map_bh(bh_result, inode->i_sb, s); - return 0; + goto ret_0; } - if (!create) return 0; + if (!create) goto ret_0; if (iblock<<9 != hpfs_i(inode)->mmu_private) { BUG(); - return -EIO; + r = -EIO; + goto ret_r; } if ((s = hpfs_add_sector_to_btree(inode->i_sb, inode->i_ino, 1, inode->i_blocks - 1)) == -1) { hpfs_truncate_btree(inode->i_sb, inode->i_ino, 1, inode->i_blocks - 1); - return -ENOSPC; + r = -ENOSPC; + goto ret_r; } inode->i_blocks++; hpfs_i(inode)->mmu_private += 512; set_buffer_new(bh_result); map_bh(bh_result, inode->i_sb, s); - return 0; + ret_0: + r = 0; + ret_r: + hpfs_unlock(inode->i_sb); + return r; } static int hpfs_writepage(struct page *page, struct writeback_control *wbc) @@ -130,8 +138,11 @@ static ssize_t hpfs_file_write(struct file *file, const char __user *buf, ssize_t retval; retval = do_sync_write(file, buf, count, ppos); - if (retval > 0) + if (retval > 0) { + hpfs_lock(file->f_path.dentry->d_sb); hpfs_i(file->f_path.dentry->d_inode)->i_dirty = 1; + hpfs_unlock(file->f_path.dentry->d_sb); + } return retval; } diff --git a/fs/hpfs/hpfs.h b/fs/hpfs/hpfs.h index 0e84c73cd9c4..8b0650aae328 100644 --- a/fs/hpfs/hpfs.h +++ b/fs/hpfs/hpfs.h @@ -19,9 +19,13 @@ For definitive information on HPFS, ask somebody else -- this is guesswork. There are certain to be many mistakes. */ +#if !defined(__LITTLE_ENDIAN) && !defined(__BIG_ENDIAN) +#error unknown endian +#endif + /* Notation */ -typedef unsigned secno; /* sector number, partition relative */ +typedef u32 secno; /* sector number, partition relative */ typedef secno dnode_secno; /* sector number of a dnode */ typedef secno fnode_secno; /* sector number of an fnode */ @@ -38,28 +42,28 @@ typedef u32 time32_t; /* 32-bit time_t type */ struct hpfs_boot_block { - unsigned char jmp[3]; - unsigned char oem_id[8]; - unsigned char bytes_per_sector[2]; /* 512 */ - unsigned char sectors_per_cluster; - unsigned char n_reserved_sectors[2]; - unsigned char n_fats; - unsigned char n_rootdir_entries[2]; - unsigned char n_sectors_s[2]; - unsigned char media_byte; - unsigned short sectors_per_fat; - unsigned short sectors_per_track; - unsigned short heads_per_cyl; - unsigned int n_hidden_sectors; - unsigned int n_sectors_l; /* size of partition */ - unsigned char drive_number; - unsigned char mbz; - unsigned char sig_28h; /* 28h */ - unsigned char vol_serno[4]; - unsigned char vol_label[11]; - unsigned char sig_hpfs[8]; /* "HPFS " */ - unsigned char pad[448]; - unsigned short magic; /* aa55 */ + u8 jmp[3]; + u8 oem_id[8]; + u8 bytes_per_sector[2]; /* 512 */ + u8 sectors_per_cluster; + u8 n_reserved_sectors[2]; + u8 n_fats; + u8 n_rootdir_entries[2]; + u8 n_sectors_s[2]; + u8 media_byte; + u16 sectors_per_fat; + u16 sectors_per_track; + u16 heads_per_cyl; + u32 n_hidden_sectors; + u32 n_sectors_l; /* size of partition */ + u8 drive_number; + u8 mbz; + u8 sig_28h; /* 28h */ + u8 vol_serno[4]; + u8 vol_label[11]; + u8 sig_hpfs[8]; /* "HPFS " */ + u8 pad[448]; + u16 magic; /* aa55 */ }; @@ -71,31 +75,29 @@ struct hpfs_boot_block struct hpfs_super_block { - unsigned magic; /* f995 e849 */ - unsigned magic1; /* fa53 e9c5, more magic? */ - /*unsigned huh202;*/ /* ?? 202 = N. of B. in 1.00390625 S.*/ - char version; /* version of a filesystem usually 2 */ - char funcversion; /* functional version - oldest version + u32 magic; /* f995 e849 */ + u32 magic1; /* fa53 e9c5, more magic? */ + u8 version; /* version of a filesystem usually 2 */ + u8 funcversion; /* functional version - oldest version of filesystem that can understand this disk */ - unsigned short int zero; /* 0 */ + u16 zero; /* 0 */ fnode_secno root; /* fnode of root directory */ secno n_sectors; /* size of filesystem */ - unsigned n_badblocks; /* number of bad blocks */ + u32 n_badblocks; /* number of bad blocks */ secno bitmaps; /* pointers to free space bit maps */ - unsigned zero1; /* 0 */ + u32 zero1; /* 0 */ secno badblocks; /* bad block list */ - unsigned zero3; /* 0 */ + u32 zero3; /* 0 */ time32_t last_chkdsk; /* date last checked, 0 if never */ - /*unsigned zero4;*/ /* 0 */ - time32_t last_optimize; /* date last optimized, 0 if never */ + time32_t last_optimize; /* date last optimized, 0 if never */ secno n_dir_band; /* number of sectors in dir band */ secno dir_band_start; /* first sector in dir band */ secno dir_band_end; /* last sector in dir band */ secno dir_band_bitmap; /* free space map, 1 dnode per bit */ - char volume_name[32]; /* not used */ + u8 volume_name[32]; /* not used */ secno user_id_table; /* 8 preallocated sectors - user id */ - unsigned zero6[103]; /* 0 */ + u32 zero6[103]; /* 0 */ }; @@ -107,44 +109,65 @@ struct hpfs_super_block struct hpfs_spare_block { - unsigned magic; /* f991 1849 */ - unsigned magic1; /* fa52 29c5, more magic? */ - - unsigned dirty: 1; /* 0 clean, 1 "improperly stopped" */ - /*unsigned flag1234: 4;*/ /* unknown flags */ - unsigned sparedir_used: 1; /* spare dirblks used */ - unsigned hotfixes_used: 1; /* hotfixes used */ - unsigned bad_sector: 1; /* bad sector, corrupted disk (???) */ - unsigned bad_bitmap: 1; /* bad bitmap */ - unsigned fast: 1; /* partition was fast formatted */ - unsigned old_wrote: 1; /* old version wrote to partion */ - unsigned old_wrote_1: 1; /* old version wrote to partion (?) */ - unsigned install_dasd_limits: 1; /* HPFS386 flags */ - unsigned resynch_dasd_limits: 1; - unsigned dasd_limits_operational: 1; - unsigned multimedia_active: 1; - unsigned dce_acls_active: 1; - unsigned dasd_limits_dirty: 1; - unsigned flag67: 2; - unsigned char mm_contlgulty; - unsigned char unused; + u32 magic; /* f991 1849 */ + u32 magic1; /* fa52 29c5, more magic? */ + +#ifdef __LITTLE_ENDIAN + u8 dirty: 1; /* 0 clean, 1 "improperly stopped" */ + u8 sparedir_used: 1; /* spare dirblks used */ + u8 hotfixes_used: 1; /* hotfixes used */ + u8 bad_sector: 1; /* bad sector, corrupted disk (???) */ + u8 bad_bitmap: 1; /* bad bitmap */ + u8 fast: 1; /* partition was fast formatted */ + u8 old_wrote: 1; /* old version wrote to partion */ + u8 old_wrote_1: 1; /* old version wrote to partion (?) */ +#else + u8 old_wrote_1: 1; /* old version wrote to partion (?) */ + u8 old_wrote: 1; /* old version wrote to partion */ + u8 fast: 1; /* partition was fast formatted */ + u8 bad_bitmap: 1; /* bad bitmap */ + u8 bad_sector: 1; /* bad sector, corrupted disk (???) */ + u8 hotfixes_used: 1; /* hotfixes used */ + u8 sparedir_used: 1; /* spare dirblks used */ + u8 dirty: 1; /* 0 clean, 1 "improperly stopped" */ +#endif + +#ifdef __LITTLE_ENDIAN + u8 install_dasd_limits: 1; /* HPFS386 flags */ + u8 resynch_dasd_limits: 1; + u8 dasd_limits_operational: 1; + u8 multimedia_active: 1; + u8 dce_acls_active: 1; + u8 dasd_limits_dirty: 1; + u8 flag67: 2; +#else + u8 flag67: 2; + u8 dasd_limits_dirty: 1; + u8 dce_acls_active: 1; + u8 multimedia_active: 1; + u8 dasd_limits_operational: 1; + u8 resynch_dasd_limits: 1; + u8 install_dasd_limits: 1; /* HPFS386 flags */ +#endif + + u8 mm_contlgulty; + u8 unused; secno hotfix_map; /* info about remapped bad sectors */ - unsigned n_spares_used; /* number of hotfixes */ - unsigned n_spares; /* number of spares in hotfix map */ - unsigned n_dnode_spares_free; /* spare dnodes unused */ - unsigned n_dnode_spares; /* length of spare_dnodes[] list, + u32 n_spares_used; /* number of hotfixes */ + u32 n_spares; /* number of spares in hotfix map */ + u32 n_dnode_spares_free; /* spare dnodes unused */ + u32 n_dnode_spares; /* length of spare_dnodes[] list, follows in this block*/ secno code_page_dir; /* code page directory block */ - unsigned n_code_pages; /* number of code pages */ - /*unsigned large_numbers[2];*/ /* ?? */ - unsigned super_crc; /* on HPFS386 and LAN Server this is + u32 n_code_pages; /* number of code pages */ + u32 super_crc; /* on HPFS386 and LAN Server this is checksum of superblock, on normal OS/2 unused */ - unsigned spare_crc; /* on HPFS386 checksum of spareblock */ - unsigned zero1[15]; /* unused */ + u32 spare_crc; /* on HPFS386 checksum of spareblock */ + u32 zero1[15]; /* unused */ dnode_secno spare_dnodes[100]; /* emergency free dnode list */ - unsigned zero2[1]; /* room for more? */ + u32 zero2[1]; /* room for more? */ }; /* The bad block list is 4 sectors long. The first word must be zero, @@ -179,18 +202,18 @@ struct hpfs_spare_block struct code_page_directory { - unsigned magic; /* 4945 21f7 */ - unsigned n_code_pages; /* number of pointers following */ - unsigned zero1[2]; + u32 magic; /* 4945 21f7 */ + u32 n_code_pages; /* number of pointers following */ + u32 zero1[2]; struct { - unsigned short ix; /* index */ - unsigned short code_page_number; /* code page number */ - unsigned bounds; /* matches corresponding word + u16 ix; /* index */ + u16 code_page_number; /* code page number */ + u32 bounds; /* matches corresponding word in data block */ secno code_page_data; /* sector number of a code_page_data containing c.p. array */ - unsigned short index; /* index in c.p. array in that sector*/ - unsigned short unknown; /* some unknown value; usually 0; + u16 index; /* index in c.p. array in that sector*/ + u16 unknown; /* some unknown value; usually 0; 2 in Japanese version */ } array[31]; /* unknown length */ }; @@ -201,21 +224,21 @@ struct code_page_directory struct code_page_data { - unsigned magic; /* 8945 21f7 */ - unsigned n_used; /* # elements used in c_p_data[] */ - unsigned bounds[3]; /* looks a bit like + u32 magic; /* 8945 21f7 */ + u32 n_used; /* # elements used in c_p_data[] */ + u32 bounds[3]; /* looks a bit like (beg1,end1), (beg2,end2) one byte each */ - unsigned short offs[3]; /* offsets from start of sector + u16 offs[3]; /* offsets from start of sector to start of c_p_data[ix] */ struct { - unsigned short ix; /* index */ - unsigned short code_page_number; /* code page number */ - unsigned short unknown; /* the same as in cp directory */ - unsigned char map[128]; /* upcase table for chars 80..ff */ - unsigned short zero2; + u16 ix; /* index */ + u16 code_page_number; /* code page number */ + u16 unknown; /* the same as in cp directory */ + u8 map[128]; /* upcase table for chars 80..ff */ + u16 zero2; } code_page[3]; - unsigned char incognita[78]; + u8 incognita[78]; }; @@ -255,50 +278,84 @@ struct code_page_data #define DNODE_MAGIC 0x77e40aae struct dnode { - unsigned magic; /* 77e4 0aae */ - unsigned first_free; /* offset from start of dnode to + u32 magic; /* 77e4 0aae */ + u32 first_free; /* offset from start of dnode to first free dir entry */ - unsigned root_dnode:1; /* Is it root dnode? */ - unsigned increment_me:31; /* some kind of activity counter? - Neither HPFS.IFS nor CHKDSK cares +#ifdef __LITTLE_ENDIAN + u8 root_dnode: 1; /* Is it root dnode? */ + u8 increment_me: 7; /* some kind of activity counter? */ + /* Neither HPFS.IFS nor CHKDSK cares + if you change this word */ +#else + u8 increment_me: 7; /* some kind of activity counter? */ + /* Neither HPFS.IFS nor CHKDSK cares if you change this word */ + u8 root_dnode: 1; /* Is it root dnode? */ +#endif + u8 increment_me2[3]; secno up; /* (root dnode) directory's fnode (nonroot) parent dnode */ dnode_secno self; /* pointer to this dnode */ - unsigned char dirent[2028]; /* one or more dirents */ + u8 dirent[2028]; /* one or more dirents */ }; struct hpfs_dirent { - unsigned short length; /* offset to next dirent */ - unsigned first: 1; /* set on phony ^A^A (".") entry */ - unsigned has_acl: 1; - unsigned down: 1; /* down pointer present (after name) */ - unsigned last: 1; /* set on phony \377 entry */ - unsigned has_ea: 1; /* entry has EA */ - unsigned has_xtd_perm: 1; /* has extended perm list (???) */ - unsigned has_explicit_acl: 1; - unsigned has_needea: 1; /* ?? some EA has NEEDEA set + u16 length; /* offset to next dirent */ + +#ifdef __LITTLE_ENDIAN + u8 first: 1; /* set on phony ^A^A (".") entry */ + u8 has_acl: 1; + u8 down: 1; /* down pointer present (after name) */ + u8 last: 1; /* set on phony \377 entry */ + u8 has_ea: 1; /* entry has EA */ + u8 has_xtd_perm: 1; /* has extended perm list (???) */ + u8 has_explicit_acl: 1; + u8 has_needea: 1; /* ?? some EA has NEEDEA set + I have no idea why this is + interesting in a dir entry */ +#else + u8 has_needea: 1; /* ?? some EA has NEEDEA set I have no idea why this is interesting in a dir entry */ - unsigned read_only: 1; /* dos attrib */ - unsigned hidden: 1; /* dos attrib */ - unsigned system: 1; /* dos attrib */ - unsigned flag11: 1; /* would be volume label dos attrib */ - unsigned directory: 1; /* dos attrib */ - unsigned archive: 1; /* dos attrib */ - unsigned not_8x3: 1; /* name is not 8.3 */ - unsigned flag15: 1; + u8 has_explicit_acl: 1; + u8 has_xtd_perm: 1; /* has extended perm list (???) */ + u8 has_ea: 1; /* entry has EA */ + u8 last: 1; /* set on phony \377 entry */ + u8 down: 1; /* down pointer present (after name) */ + u8 has_acl: 1; + u8 first: 1; /* set on phony ^A^A (".") entry */ +#endif + +#ifdef __LITTLE_ENDIAN + u8 read_only: 1; /* dos attrib */ + u8 hidden: 1; /* dos attrib */ + u8 system: 1; /* dos attrib */ + u8 flag11: 1; /* would be volume label dos attrib */ + u8 directory: 1; /* dos attrib */ + u8 archive: 1; /* dos attrib */ + u8 not_8x3: 1; /* name is not 8.3 */ + u8 flag15: 1; +#else + u8 flag15: 1; + u8 not_8x3: 1; /* name is not 8.3 */ + u8 archive: 1; /* dos attrib */ + u8 directory: 1; /* dos attrib */ + u8 flag11: 1; /* would be volume label dos attrib */ + u8 system: 1; /* dos attrib */ + u8 hidden: 1; /* dos attrib */ + u8 read_only: 1; /* dos attrib */ +#endif + fnode_secno fnode; /* fnode giving allocation info */ time32_t write_date; /* mtime */ - unsigned file_size; /* file length, bytes */ + u32 file_size; /* file length, bytes */ time32_t read_date; /* atime */ time32_t creation_date; /* ctime */ - unsigned ea_size; /* total EA length, bytes */ - unsigned char no_of_acls : 3; /* number of ACL's */ - unsigned char reserver : 5; - unsigned char ix; /* code page index (of filename), see + u32 ea_size; /* total EA length, bytes */ + u8 no_of_acls; /* number of ACL's (low 3 bits) */ + u8 ix; /* code page index (of filename), see struct code_page_data */ - unsigned char namelen, name[1]; /* file name */ + u8 namelen, name[1]; /* file name */ /* dnode_secno down; btree down pointer, if present, follows name on next word boundary, or maybe it precedes next dirent, which is on a word boundary. */ @@ -318,38 +375,50 @@ struct hpfs_dirent { struct bplus_leaf_node { - unsigned file_secno; /* first file sector in extent */ - unsigned length; /* length, sectors */ + u32 file_secno; /* first file sector in extent */ + u32 length; /* length, sectors */ secno disk_secno; /* first corresponding disk sector */ }; struct bplus_internal_node { - unsigned file_secno; /* subtree maps sectors < this */ + u32 file_secno; /* subtree maps sectors < this */ anode_secno down; /* pointer to subtree */ }; struct bplus_header { - unsigned hbff: 1; /* high bit of first free entry offset */ - unsigned flag1: 1; - unsigned flag2: 1; - unsigned flag3: 1; - unsigned flag4: 1; - unsigned fnode_parent: 1; /* ? we're pointed to by an fnode, +#ifdef __LITTLE_ENDIAN + u8 hbff: 1; /* high bit of first free entry offset */ + u8 flag1234: 4; + u8 fnode_parent: 1; /* ? we're pointed to by an fnode, the data btree or some ea or the main ea bootage pointer ea_secno */ /* also can get set in fnodes, which may be a chkdsk glitch or may mean this bit is irrelevant in fnodes, or this interpretation is all wet */ - unsigned binary_search: 1; /* suggest binary search (unused) */ - unsigned internal: 1; /* 1 -> (internal) tree of anodes + u8 binary_search: 1; /* suggest binary search (unused) */ + u8 internal: 1; /* 1 -> (internal) tree of anodes + 0 -> (leaf) list of extents */ +#else + u8 internal: 1; /* 1 -> (internal) tree of anodes 0 -> (leaf) list of extents */ - unsigned char fill[3]; - unsigned char n_free_nodes; /* free nodes in following array */ - unsigned char n_used_nodes; /* used nodes in following array */ - unsigned short first_free; /* offset from start of header to + u8 binary_search: 1; /* suggest binary search (unused) */ + u8 fnode_parent: 1; /* ? we're pointed to by an fnode, + the data btree or some ea or the + main ea bootage pointer ea_secno */ + /* also can get set in fnodes, which + may be a chkdsk glitch or may mean + this bit is irrelevant in fnodes, + or this interpretation is all wet */ + u8 flag1234: 4; + u8 hbff: 1; /* high bit of first free entry offset */ +#endif + u8 fill[3]; + u8 n_free_nodes; /* free nodes in following array */ + u8 n_used_nodes; /* used nodes in following array */ + u16 first_free; /* offset from start of header to first free node in array */ union { struct bplus_internal_node internal[0]; /* (internal) 2-word entries giving @@ -369,37 +438,38 @@ struct bplus_header struct fnode { - unsigned magic; /* f7e4 0aae */ - unsigned zero1[2]; /* read history */ - unsigned char len, name[15]; /* true length, truncated name */ + u32 magic; /* f7e4 0aae */ + u32 zero1[2]; /* read history */ + u8 len, name[15]; /* true length, truncated name */ fnode_secno up; /* pointer to file's directory fnode */ - /*unsigned zero2[3];*/ secno acl_size_l; secno acl_secno; - unsigned short acl_size_s; - char acl_anode; - char zero2; /* history bit count */ - unsigned ea_size_l; /* length of disk-resident ea's */ + u16 acl_size_s; + u8 acl_anode; + u8 zero2; /* history bit count */ + u32 ea_size_l; /* length of disk-resident ea's */ secno ea_secno; /* first sector of disk-resident ea's*/ - unsigned short ea_size_s; /* length of fnode-resident ea's */ - - unsigned flag0: 1; - unsigned ea_anode: 1; /* 1 -> ea_secno is an anode */ - unsigned flag2: 1; - unsigned flag3: 1; - unsigned flag4: 1; - unsigned flag5: 1; - unsigned flag6: 1; - unsigned flag7: 1; - unsigned dirflag: 1; /* 1 -> directory. first & only extent + u16 ea_size_s; /* length of fnode-resident ea's */ + +#ifdef __LITTLE_ENDIAN + u8 flag0: 1; + u8 ea_anode: 1; /* 1 -> ea_secno is an anode */ + u8 flag234567: 6; +#else + u8 flag234567: 6; + u8 ea_anode: 1; /* 1 -> ea_secno is an anode */ + u8 flag0: 1; +#endif + +#ifdef __LITTLE_ENDIAN + u8 dirflag: 1; /* 1 -> directory. first & only extent points to dnode. */ - unsigned flag9: 1; - unsigned flag10: 1; - unsigned flag11: 1; - unsigned flag12: 1; - unsigned flag13: 1; - unsigned flag14: 1; - unsigned flag15: 1; + u8 flag9012345: 7; +#else + u8 flag9012345: 7; + u8 dirflag: 1; /* 1 -> directory. first & only extent + points to dnode. */ +#endif struct bplus_header btree; /* b+ tree, 8 extents or 12 subtrees */ union { @@ -407,17 +477,16 @@ struct fnode struct bplus_internal_node internal[12]; } u; - unsigned file_size; /* file length, bytes */ - unsigned n_needea; /* number of EA's with NEEDEA set */ - char user_id[16]; /* unused */ - unsigned short ea_offs; /* offset from start of fnode + u32 file_size; /* file length, bytes */ + u32 n_needea; /* number of EA's with NEEDEA set */ + u8 user_id[16]; /* unused */ + u16 ea_offs; /* offset from start of fnode to first fnode-resident ea */ - char dasd_limit_treshhold; - char dasd_limit_delta; - unsigned dasd_limit; - unsigned dasd_usage; - /*unsigned zero5[2];*/ - unsigned char ea[316]; /* zero or more EA's, packed together + u8 dasd_limit_treshhold; + u8 dasd_limit_delta; + u32 dasd_limit; + u32 dasd_usage; + u8 ea[316]; /* zero or more EA's, packed together with no alignment padding. (Do not use this name, get here via fnode + ea_offs. I think.) */ @@ -430,7 +499,7 @@ struct fnode struct anode { - unsigned magic; /* 37e4 0aae */ + u32 magic; /* 37e4 0aae */ anode_secno self; /* pointer to this anode */ secno up; /* parent anode or fnode */ @@ -440,7 +509,7 @@ struct anode struct bplus_internal_node internal[60]; } u; - unsigned fill[3]; /* unused */ + u32 fill[3]; /* unused */ }; @@ -461,25 +530,31 @@ struct anode struct extended_attribute { - unsigned indirect: 1; /* 1 -> value gives sector number +#ifdef __LITTLE_ENDIAN + u8 indirect: 1; /* 1 -> value gives sector number where real value starts */ - unsigned anode: 1; /* 1 -> sector is an anode + u8 anode: 1; /* 1 -> sector is an anode + that points to fragmented value */ + u8 flag23456: 5; + u8 needea: 1; /* required ea */ +#else + u8 needea: 1; /* required ea */ + u8 flag23456: 5; + u8 anode: 1; /* 1 -> sector is an anode that points to fragmented value */ - unsigned flag2: 1; - unsigned flag3: 1; - unsigned flag4: 1; - unsigned flag5: 1; - unsigned flag6: 1; - unsigned needea: 1; /* required ea */ - unsigned char namelen; /* length of name, bytes */ - unsigned short valuelen; /* length of value, bytes */ - unsigned char name[0]; + u8 indirect: 1; /* 1 -> value gives sector number + where real value starts */ +#endif + u8 namelen; /* length of name, bytes */ + u8 valuelen_lo; /* length of value, bytes */ + u8 valuelen_hi; /* length of value, bytes */ + u8 name[0]; /* - unsigned char name[namelen]; ascii attrib name - unsigned char nul; terminating '\0', not counted - unsigned char value[valuelen]; value, arbitrary + u8 name[namelen]; ascii attrib name + u8 nul; terminating '\0', not counted + u8 value[valuelen]; value, arbitrary if this.indirect, valuelen is 8 and the value is - unsigned length; real length of value, bytes + u32 length; real length of value, bytes secno secno; sector address where it starts if this.anode, the above sector number is the root of an anode tree which points to the value. diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h index c15adbca07ff..dd552f862c8f 100644 --- a/fs/hpfs/hpfs_fn.h +++ b/fs/hpfs/hpfs_fn.h @@ -13,6 +13,7 @@ #include <linux/pagemap.h> #include <linux/buffer_head.h> #include <linux/slab.h> +#include <asm/unaligned.h> #include "hpfs.h" @@ -51,18 +52,16 @@ struct hpfs_inode_info { unsigned i_disk_sec; /* (files) minimalist cache of alloc info */ unsigned i_n_secs; /* (files) minimalist cache of alloc info */ unsigned i_ea_size; /* size of extended attributes */ - unsigned i_conv : 2; /* (files) crlf->newline hackery */ unsigned i_ea_mode : 1; /* file's permission is stored in ea */ unsigned i_ea_uid : 1; /* file's uid is stored in ea */ unsigned i_ea_gid : 1; /* file's gid is stored in ea */ unsigned i_dirty : 1; - struct mutex i_mutex; - struct mutex i_parent_mutex; loff_t **i_rddir_off; struct inode vfs_inode; }; struct hpfs_sb_info { + struct mutex hpfs_mutex; /* global hpfs lock */ ino_t sb_root; /* inode number of root dir */ unsigned sb_fs_size; /* file system size, sectors */ unsigned sb_bitmaps; /* sector number of bitmap list */ @@ -74,7 +73,6 @@ struct hpfs_sb_info { uid_t sb_uid; /* uid from mount options */ gid_t sb_gid; /* gid from mount options */ umode_t sb_mode; /* mode from mount options */ - unsigned sb_conv : 2; /* crlf->newline hackery */ unsigned sb_eas : 2; /* eas: 0-ignore, 1-ro, 2-rw */ unsigned sb_err : 2; /* on errs: 0-cont, 1-ro, 2-panic */ unsigned sb_chk : 2; /* checks: 0-no, 1-normal, 2-strict */ @@ -87,20 +85,9 @@ struct hpfs_sb_info { unsigned *sb_bmp_dir; /* main bitmap directory */ unsigned sb_c_bitmap; /* current bitmap */ unsigned sb_max_fwd_alloc; /* max forwad allocation */ - struct mutex hpfs_creation_de; /* when creating dirents, nobody else - can alloc blocks */ - /*unsigned sb_mounting : 1;*/ int sb_timeshift; }; -/* - * conv= options - */ - -#define CONV_BINARY 0 /* no conversion */ -#define CONV_TEXT 1 /* crlf->newline */ -#define CONV_AUTO 2 /* decide based on file contents */ - /* Four 512-byte buffers and the 2k block obtained by concatenating them */ struct quad_buffer_head { @@ -113,7 +100,7 @@ struct quad_buffer_head { static inline dnode_secno de_down_pointer (struct hpfs_dirent *de) { CHKCOND(de->down,("HPFS: de_down_pointer: !de->down\n")); - return *(dnode_secno *) ((void *) de + de->length - 4); + return le32_to_cpu(*(dnode_secno *) ((void *) de + le16_to_cpu(de->length) - 4)); } /* The first dir entry in a dnode */ @@ -127,41 +114,46 @@ static inline struct hpfs_dirent *dnode_first_de (struct dnode *dnode) static inline struct hpfs_dirent *dnode_end_de (struct dnode *dnode) { - CHKCOND(dnode->first_free>=0x14 && dnode->first_free<=0xa00,("HPFS: dnode_end_de: dnode->first_free = %d\n",(int)dnode->first_free)); - return (void *) dnode + dnode->first_free; + CHKCOND(le32_to_cpu(dnode->first_free)>=0x14 && le32_to_cpu(dnode->first_free)<=0xa00,("HPFS: dnode_end_de: dnode->first_free = %x\n",(unsigned)le32_to_cpu(dnode->first_free))); + return (void *) dnode + le32_to_cpu(dnode->first_free); } /* The dir entry after dir entry de */ static inline struct hpfs_dirent *de_next_de (struct hpfs_dirent *de) { - CHKCOND(de->length>=0x20 && de->length<0x800,("HPFS: de_next_de: de->length = %d\n",(int)de->length)); - return (void *) de + de->length; + CHKCOND(le16_to_cpu(de->length)>=0x20 && le16_to_cpu(de->length)<0x800,("HPFS: de_next_de: de->length = %x\n",(unsigned)le16_to_cpu(de->length))); + return (void *) de + le16_to_cpu(de->length); } static inline struct extended_attribute *fnode_ea(struct fnode *fnode) { - return (struct extended_attribute *)((char *)fnode + fnode->ea_offs + fnode->acl_size_s); + return (struct extended_attribute *)((char *)fnode + le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s)); } static inline struct extended_attribute *fnode_end_ea(struct fnode *fnode) { - return (struct extended_attribute *)((char *)fnode + fnode->ea_offs + fnode->acl_size_s + fnode->ea_size_s); + return (struct extended_attribute *)((char *)fnode + le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s) + le16_to_cpu(fnode->ea_size_s)); +} + +static unsigned ea_valuelen(struct extended_attribute *ea) +{ + return ea->valuelen_lo + 256 * ea->valuelen_hi; } static inline struct extended_attribute *next_ea(struct extended_attribute *ea) { - return (struct extended_attribute *)((char *)ea + 5 + ea->namelen + ea->valuelen); + return (struct extended_attribute *)((char *)ea + 5 + ea->namelen + ea_valuelen(ea)); } static inline secno ea_sec(struct extended_attribute *ea) { - return *(secno *)((char *)ea + 9 + ea->namelen); + return le32_to_cpu(get_unaligned((secno *)((char *)ea + 9 + ea->namelen))); } static inline secno ea_len(struct extended_attribute *ea) { - return *(secno *)((char *)ea + 5 + ea->namelen); + return le32_to_cpu(get_unaligned((secno *)((char *)ea + 5 + ea->namelen))); } static inline char *ea_data(struct extended_attribute *ea) @@ -186,13 +178,13 @@ static inline void copy_de(struct hpfs_dirent *dst, struct hpfs_dirent *src) dst->not_8x3 = n; } -static inline unsigned tstbits(unsigned *bmp, unsigned b, unsigned n) +static inline unsigned tstbits(u32 *bmp, unsigned b, unsigned n) { int i; if ((b >= 0x4000) || (b + n - 1 >= 0x4000)) return n; - if (!((bmp[(b & 0x3fff) >> 5] >> (b & 0x1f)) & 1)) return 1; + if (!((le32_to_cpu(bmp[(b & 0x3fff) >> 5]) >> (b & 0x1f)) & 1)) return 1; for (i = 1; i < n; i++) - if (/*b+i < 0x4000 &&*/ !((bmp[((b+i) & 0x3fff) >> 5] >> ((b+i) & 0x1f)) & 1)) + if (!((le32_to_cpu(bmp[((b+i) & 0x3fff) >> 5]) >> ((b+i) & 0x1f)) & 1)) return i + 1; return 0; } @@ -200,12 +192,12 @@ static inline unsigned tstbits(unsigned *bmp, unsigned b, unsigned n) /* alloc.c */ int hpfs_chk_sectors(struct super_block *, secno, int, char *); -secno hpfs_alloc_sector(struct super_block *, secno, unsigned, int, int); +secno hpfs_alloc_sector(struct super_block *, secno, unsigned, int); int hpfs_alloc_if_possible(struct super_block *, secno); void hpfs_free_sectors(struct super_block *, secno, unsigned); int hpfs_check_free_dnodes(struct super_block *, int); void hpfs_free_dnode(struct super_block *, secno); -struct dnode *hpfs_alloc_dnode(struct super_block *, secno, dnode_secno *, struct quad_buffer_head *, int); +struct dnode *hpfs_alloc_dnode(struct super_block *, secno, dnode_secno *, struct quad_buffer_head *); struct fnode *hpfs_alloc_fnode(struct super_block *, secno, fnode_secno *, struct buffer_head **); struct anode *hpfs_alloc_anode(struct super_block *, secno, anode_secno *, struct buffer_head **); @@ -222,8 +214,6 @@ void hpfs_remove_fnode(struct super_block *, fnode_secno fno); /* buffer.c */ -void hpfs_lock_creation(struct super_block *); -void hpfs_unlock_creation(struct super_block *); void *hpfs_map_sector(struct super_block *, unsigned, struct buffer_head **, int); void *hpfs_get_sector(struct super_block *, unsigned, struct buffer_head **); void *hpfs_map_4sectors(struct super_block *, unsigned, struct quad_buffer_head *, int); @@ -247,7 +237,7 @@ void hpfs_del_pos(struct inode *, loff_t *); struct hpfs_dirent *hpfs_add_de(struct super_block *, struct dnode *, const unsigned char *, unsigned, secno); int hpfs_add_dirent(struct inode *, const unsigned char *, unsigned, - struct hpfs_dirent *, int); + struct hpfs_dirent *); int hpfs_remove_dirent(struct inode *, dnode_secno, struct hpfs_dirent *, struct quad_buffer_head *, int); void hpfs_count_dnodes(struct super_block *, dnode_secno, int *, int *, int *); dnode_secno hpfs_de_as_down_as_possible(struct super_block *, dnode_secno dno); @@ -303,7 +293,6 @@ int hpfs_compare_names(struct super_block *, const unsigned char *, unsigned, const unsigned char *, unsigned, int); int hpfs_is_name_long(const unsigned char *, unsigned); void hpfs_adjust_length(const unsigned char *, unsigned *); -void hpfs_decide_conv(struct inode *, const unsigned char *, unsigned); /* namei.c */ @@ -346,21 +335,26 @@ static inline time32_t gmt_to_local(struct super_block *s, time_t t) /* * Locking: * - * hpfs_lock() is a leftover from the big kernel lock. - * Right now, these functions are empty and only left - * for documentation purposes. The file system no longer - * works on SMP systems, so the lock is not needed - * any more. + * hpfs_lock() locks the whole filesystem. It must be taken + * on any method called by the VFS. * - * If someone is interested in making it work again, this - * would be the place to start by adding a per-superblock - * mutex and fixing all the bugs and performance issues - * caused by that. + * We don't do any per-file locking anymore, it is hard to + * review and HPFS is not performance-sensitive anyway. */ static inline void hpfs_lock(struct super_block *s) { + struct hpfs_sb_info *sbi = hpfs_sb(s); + mutex_lock(&sbi->hpfs_mutex); } static inline void hpfs_unlock(struct super_block *s) { + struct hpfs_sb_info *sbi = hpfs_sb(s); + mutex_unlock(&sbi->hpfs_mutex); +} + +static inline void hpfs_lock_assert(struct super_block *s) +{ + struct hpfs_sb_info *sbi = hpfs_sb(s); + WARN_ON(!mutex_is_locked(&sbi->hpfs_mutex)); } diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c index 87f1f787e767..338cd8368451 100644 --- a/fs/hpfs/inode.c +++ b/fs/hpfs/inode.c @@ -17,7 +17,6 @@ void hpfs_init_inode(struct inode *i) i->i_uid = hpfs_sb(sb)->sb_uid; i->i_gid = hpfs_sb(sb)->sb_gid; i->i_mode = hpfs_sb(sb)->sb_mode; - hpfs_inode->i_conv = hpfs_sb(sb)->sb_conv; i->i_size = -1; i->i_blocks = -1; @@ -116,8 +115,8 @@ void hpfs_read_inode(struct inode *i) i->i_mode |= S_IFDIR; i->i_op = &hpfs_dir_iops; i->i_fop = &hpfs_dir_ops; - hpfs_inode->i_parent_dir = fnode->up; - hpfs_inode->i_dno = fnode->u.external[0].disk_secno; + hpfs_inode->i_parent_dir = le32_to_cpu(fnode->up); + hpfs_inode->i_dno = le32_to_cpu(fnode->u.external[0].disk_secno); if (hpfs_sb(sb)->sb_chk >= 2) { struct buffer_head *bh0; if (hpfs_map_fnode(sb, hpfs_inode->i_parent_dir, &bh0)) brelse(bh0); @@ -133,7 +132,7 @@ void hpfs_read_inode(struct inode *i) i->i_op = &hpfs_file_iops; i->i_fop = &hpfs_file_ops; i->i_nlink = 1; - i->i_size = fnode->file_size; + i->i_size = le32_to_cpu(fnode->file_size); i->i_blocks = ((i->i_size + 511) >> 9) + 1; i->i_data.a_ops = &hpfs_aops; hpfs_i(i)->mmu_private = i->i_size; @@ -144,7 +143,7 @@ void hpfs_read_inode(struct inode *i) static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode) { struct hpfs_inode_info *hpfs_inode = hpfs_i(i); - /*if (fnode->acl_size_l || fnode->acl_size_s) { + /*if (le32_to_cpu(fnode->acl_size_l) || le16_to_cpu(fnode->acl_size_s)) { Some unknown structures like ACL may be in fnode, we'd better not overwrite them hpfs_error(i->i_sb, "fnode %08x has some unknown HPFS386 stuctures", i->i_ino); @@ -187,9 +186,7 @@ void hpfs_write_inode(struct inode *i) kfree(hpfs_inode->i_rddir_off); hpfs_inode->i_rddir_off = NULL; } - mutex_lock(&hpfs_inode->i_parent_mutex); if (!i->i_nlink) { - mutex_unlock(&hpfs_inode->i_parent_mutex); return; } parent = iget_locked(i->i_sb, hpfs_inode->i_parent_dir); @@ -200,14 +197,9 @@ void hpfs_write_inode(struct inode *i) hpfs_read_inode(parent); unlock_new_inode(parent); } - mutex_lock(&hpfs_inode->i_mutex); hpfs_write_inode_nolock(i); - mutex_unlock(&hpfs_inode->i_mutex); iput(parent); - } else { - mark_inode_dirty(i); } - mutex_unlock(&hpfs_inode->i_parent_mutex); } void hpfs_write_inode_nolock(struct inode *i) @@ -226,30 +218,30 @@ void hpfs_write_inode_nolock(struct inode *i) } } else de = NULL; if (S_ISREG(i->i_mode)) { - fnode->file_size = i->i_size; - if (de) de->file_size = i->i_size; + fnode->file_size = cpu_to_le32(i->i_size); + if (de) de->file_size = cpu_to_le32(i->i_size); } else if (S_ISDIR(i->i_mode)) { - fnode->file_size = 0; - if (de) de->file_size = 0; + fnode->file_size = cpu_to_le32(0); + if (de) de->file_size = cpu_to_le32(0); } hpfs_write_inode_ea(i, fnode); if (de) { - de->write_date = gmt_to_local(i->i_sb, i->i_mtime.tv_sec); - de->read_date = gmt_to_local(i->i_sb, i->i_atime.tv_sec); - de->creation_date = gmt_to_local(i->i_sb, i->i_ctime.tv_sec); + de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec)); + de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec)); + de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec)); de->read_only = !(i->i_mode & 0222); - de->ea_size = hpfs_inode->i_ea_size; + de->ea_size = cpu_to_le32(hpfs_inode->i_ea_size); hpfs_mark_4buffers_dirty(&qbh); hpfs_brelse4(&qbh); } if (S_ISDIR(i->i_mode)) { if ((de = map_dirent(i, hpfs_inode->i_dno, "\001\001", 2, NULL, &qbh))) { - de->write_date = gmt_to_local(i->i_sb, i->i_mtime.tv_sec); - de->read_date = gmt_to_local(i->i_sb, i->i_atime.tv_sec); - de->creation_date = gmt_to_local(i->i_sb, i->i_ctime.tv_sec); + de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec)); + de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec)); + de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec)); de->read_only = !(i->i_mode & 0222); - de->ea_size = /*hpfs_inode->i_ea_size*/0; - de->file_size = 0; + de->ea_size = cpu_to_le32(/*hpfs_inode->i_ea_size*/0); + de->file_size = cpu_to_le32(0); hpfs_mark_4buffers_dirty(&qbh); hpfs_brelse4(&qbh); } else @@ -269,6 +261,10 @@ int hpfs_setattr(struct dentry *dentry, struct iattr *attr) hpfs_lock(inode->i_sb); if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root) goto out_unlock; + if ((attr->ia_valid & ATTR_UID) && attr->ia_uid >= 0x10000) + goto out_unlock; + if ((attr->ia_valid & ATTR_GID) && attr->ia_gid >= 0x10000) + goto out_unlock; if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size) goto out_unlock; @@ -284,7 +280,6 @@ int hpfs_setattr(struct dentry *dentry, struct iattr *attr) } setattr_copy(inode, attr); - mark_inode_dirty(inode); hpfs_write_inode(inode); diff --git a/fs/hpfs/map.c b/fs/hpfs/map.c index 840d033ecee8..a790821366a7 100644 --- a/fs/hpfs/map.c +++ b/fs/hpfs/map.c @@ -21,7 +21,7 @@ unsigned int *hpfs_map_bitmap(struct super_block *s, unsigned bmp_block, hpfs_error(s, "hpfs_map_bitmap called with bad parameter: %08x at %s", bmp_block, id); return NULL; } - sec = hpfs_sb(s)->sb_bmp_dir[bmp_block]; + sec = le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[bmp_block]); if (!sec || sec > hpfs_sb(s)->sb_fs_size-4) { hpfs_error(s, "invalid bitmap block pointer %08x -> %08x at %s", bmp_block, sec, id); return NULL; @@ -46,18 +46,18 @@ unsigned char *hpfs_load_code_page(struct super_block *s, secno cps) struct code_page_data *cpd; struct code_page_directory *cp = hpfs_map_sector(s, cps, &bh, 0); if (!cp) return NULL; - if (cp->magic != CP_DIR_MAGIC) { - printk("HPFS: Code page directory magic doesn't match (magic = %08x)\n", cp->magic); + if (le32_to_cpu(cp->magic) != CP_DIR_MAGIC) { + printk("HPFS: Code page directory magic doesn't match (magic = %08x)\n", le32_to_cpu(cp->magic)); brelse(bh); return NULL; } - if (!cp->n_code_pages) { + if (!le32_to_cpu(cp->n_code_pages)) { printk("HPFS: n_code_pages == 0\n"); brelse(bh); return NULL; } - cpds = cp->array[0].code_page_data; - cpi = cp->array[0].index; + cpds = le32_to_cpu(cp->array[0].code_page_data); + cpi = le16_to_cpu(cp->array[0].index); brelse(bh); if (cpi >= 3) { @@ -66,12 +66,12 @@ unsigned char *hpfs_load_code_page(struct super_block *s, secno cps) } if (!(cpd = hpfs_map_sector(s, cpds, &bh, 0))) return NULL; - if ((unsigned)cpd->offs[cpi] > 0x178) { + if (le16_to_cpu(cpd->offs[cpi]) > 0x178) { printk("HPFS: Code page index out of sector\n"); brelse(bh); return NULL; } - ptr = (unsigned char *)cpd + cpd->offs[cpi] + 6; + ptr = (unsigned char *)cpd + le16_to_cpu(cpd->offs[cpi]) + 6; if (!(cp_table = kmalloc(256, GFP_KERNEL))) { printk("HPFS: out of memory for code page table\n"); brelse(bh); @@ -125,7 +125,7 @@ struct fnode *hpfs_map_fnode(struct super_block *s, ino_t ino, struct buffer_hea if (hpfs_sb(s)->sb_chk) { struct extended_attribute *ea; struct extended_attribute *ea_end; - if (fnode->magic != FNODE_MAGIC) { + if (le32_to_cpu(fnode->magic) != FNODE_MAGIC) { hpfs_error(s, "bad magic on fnode %08lx", (unsigned long)ino); goto bail; @@ -138,7 +138,7 @@ struct fnode *hpfs_map_fnode(struct super_block *s, ino_t ino, struct buffer_hea (unsigned long)ino); goto bail; } - if (fnode->btree.first_free != + if (le16_to_cpu(fnode->btree.first_free) != 8 + fnode->btree.n_used_nodes * (fnode->btree.internal ? 8 : 12)) { hpfs_error(s, "bad first_free pointer in fnode %08lx", @@ -146,12 +146,12 @@ struct fnode *hpfs_map_fnode(struct super_block *s, ino_t ino, struct buffer_hea goto bail; } } - if (fnode->ea_size_s && ((signed int)fnode->ea_offs < 0xc4 || - (signed int)fnode->ea_offs + fnode->acl_size_s + fnode->ea_size_s > 0x200)) { + if (le16_to_cpu(fnode->ea_size_s) && (le16_to_cpu(fnode->ea_offs) < 0xc4 || + le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s) + le16_to_cpu(fnode->ea_size_s) > 0x200)) { hpfs_error(s, "bad EA info in fnode %08lx: ea_offs == %04x ea_size_s == %04x", (unsigned long)ino, - fnode->ea_offs, fnode->ea_size_s); + le16_to_cpu(fnode->ea_offs), le16_to_cpu(fnode->ea_size_s)); goto bail; } ea = fnode_ea(fnode); @@ -178,16 +178,20 @@ struct anode *hpfs_map_anode(struct super_block *s, anode_secno ano, struct buff if (hpfs_sb(s)->sb_chk) if (hpfs_chk_sectors(s, ano, 1, "anode")) return NULL; if ((anode = hpfs_map_sector(s, ano, bhp, ANODE_RD_AHEAD))) if (hpfs_sb(s)->sb_chk) { - if (anode->magic != ANODE_MAGIC || anode->self != ano) { + if (le32_to_cpu(anode->magic) != ANODE_MAGIC) { hpfs_error(s, "bad magic on anode %08x", ano); goto bail; } + if (le32_to_cpu(anode->self) != ano) { + hpfs_error(s, "self pointer invalid on anode %08x", ano); + goto bail; + } if ((unsigned)anode->btree.n_used_nodes + (unsigned)anode->btree.n_free_nodes != (anode->btree.internal ? 60 : 40)) { hpfs_error(s, "bad number of nodes in anode %08x", ano); goto bail; } - if (anode->btree.first_free != + if (le16_to_cpu(anode->btree.first_free) != 8 + anode->btree.n_used_nodes * (anode->btree.internal ? 8 : 12)) { hpfs_error(s, "bad first_free pointer in anode %08x", ano); goto bail; @@ -219,26 +223,26 @@ struct dnode *hpfs_map_dnode(struct super_block *s, unsigned secno, unsigned p, pp = 0; unsigned char *d = (unsigned char *)dnode; int b = 0; - if (dnode->magic != DNODE_MAGIC) { + if (le32_to_cpu(dnode->magic) != DNODE_MAGIC) { hpfs_error(s, "bad magic on dnode %08x", secno); goto bail; } - if (dnode->self != secno) - hpfs_error(s, "bad self pointer on dnode %08x self = %08x", secno, dnode->self); + if (le32_to_cpu(dnode->self) != secno) + hpfs_error(s, "bad self pointer on dnode %08x self = %08x", secno, le32_to_cpu(dnode->self)); /* Check dirents - bad dirents would cause infinite loops or shooting to memory */ - if (dnode->first_free > 2048/* || dnode->first_free < 84*/) { - hpfs_error(s, "dnode %08x has first_free == %08x", secno, dnode->first_free); + if (le32_to_cpu(dnode->first_free) > 2048) { + hpfs_error(s, "dnode %08x has first_free == %08x", secno, le32_to_cpu(dnode->first_free)); goto bail; } - for (p = 20; p < dnode->first_free; p += d[p] + (d[p+1] << 8)) { + for (p = 20; p < le32_to_cpu(dnode->first_free); p += d[p] + (d[p+1] << 8)) { struct hpfs_dirent *de = (struct hpfs_dirent *)((char *)dnode + p); - if (de->length > 292 || (de->length < 32) || (de->length & 3) || p + de->length > 2048) { + if (le16_to_cpu(de->length) > 292 || (le16_to_cpu(de->length) < 32) || (le16_to_cpu(de->length) & 3) || p + le16_to_cpu(de->length) > 2048) { hpfs_error(s, "bad dirent size in dnode %08x, dirent %03x, last %03x", secno, p, pp); goto bail; } - if (((31 + de->namelen + de->down*4 + 3) & ~3) != de->length) { - if (((31 + de->namelen + de->down*4 + 3) & ~3) < de->length && s->s_flags & MS_RDONLY) goto ok; + if (((31 + de->namelen + de->down*4 + 3) & ~3) != le16_to_cpu(de->length)) { + if (((31 + de->namelen + de->down*4 + 3) & ~3) < le16_to_cpu(de->length) && s->s_flags & MS_RDONLY) goto ok; hpfs_error(s, "namelen does not match dirent size in dnode %08x, dirent %03x, last %03x", secno, p, pp); goto bail; } @@ -251,7 +255,7 @@ struct dnode *hpfs_map_dnode(struct super_block *s, unsigned secno, pp = p; } - if (p != dnode->first_free) { + if (p != le32_to_cpu(dnode->first_free)) { hpfs_error(s, "size on last dirent does not match first_free; dnode %08x", secno); goto bail; } @@ -277,7 +281,7 @@ dnode_secno hpfs_fnode_dno(struct super_block *s, ino_t ino) if (!fnode) return 0; - dno = fnode->u.external[0].disk_secno; + dno = le32_to_cpu(fnode->u.external[0].disk_secno); brelse(bh); return dno; } diff --git a/fs/hpfs/name.c b/fs/hpfs/name.c index f24736d7a439..9acdf338def0 100644 --- a/fs/hpfs/name.c +++ b/fs/hpfs/name.c @@ -8,39 +8,6 @@ #include "hpfs_fn.h" -static const char *text_postfix[]={ -".ASM", ".BAS", ".BAT", ".C", ".CC", ".CFG", ".CMD", ".CON", ".CPP", ".DEF", -".DOC", ".DPR", ".ERX", ".H", ".HPP", ".HTM", ".HTML", ".JAVA", ".LOG", ".PAS", -".RC", ".TEX", ".TXT", ".Y", ""}; - -static const char *text_prefix[]={ -"AUTOEXEC.", "CHANGES", "COPYING", "CONFIG.", "CREDITS", "FAQ", "FILE_ID.DIZ", -"MAKEFILE", "READ.ME", "README", "TERMCAP", ""}; - -void hpfs_decide_conv(struct inode *inode, const unsigned char *name, unsigned len) -{ - struct hpfs_inode_info *hpfs_inode = hpfs_i(inode); - int i; - if (hpfs_inode->i_conv != CONV_AUTO) return; - for (i = 0; *text_postfix[i]; i++) { - int l = strlen(text_postfix[i]); - if (l <= len) - if (!hpfs_compare_names(inode->i_sb, text_postfix[i], l, name + len - l, l, 0)) - goto text; - } - for (i = 0; *text_prefix[i]; i++) { - int l = strlen(text_prefix[i]); - if (l <= len) - if (!hpfs_compare_names(inode->i_sb, text_prefix[i], l, name, l, 0)) - goto text; - } - hpfs_inode->i_conv = CONV_BINARY; - return; - text: - hpfs_inode->i_conv = CONV_TEXT; - return; -} - static inline int not_allowed_char(unsigned char c) { return c<' ' || c=='"' || c=='*' || c=='/' || c==':' || c=='<' || diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c index d5f8c8a19023..1f05839c27a7 100644 --- a/fs/hpfs/namei.c +++ b/fs/hpfs/namei.c @@ -29,7 +29,7 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh); if (!fnode) goto bail; - dnode = hpfs_alloc_dnode(dir->i_sb, fno, &dno, &qbh0, 1); + dnode = hpfs_alloc_dnode(dir->i_sb, fno, &dno, &qbh0); if (!dnode) goto bail1; memset(&dee, 0, sizeof dee); @@ -37,8 +37,8 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) if (!(mode & 0222)) dee.read_only = 1; /*dee.archive = 0;*/ dee.hidden = name[0] == '.'; - dee.fnode = fno; - dee.creation_date = dee.write_date = dee.read_date = gmt_to_local(dir->i_sb, get_seconds()); + dee.fnode = cpu_to_le32(fno); + dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds())); result = new_inode(dir->i_sb); if (!result) goto bail2; @@ -46,7 +46,7 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) result->i_ino = fno; hpfs_i(result)->i_parent_dir = dir->i_ino; hpfs_i(result)->i_dno = dno; - result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, dee.creation_date); + result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)); result->i_ctime.tv_nsec = 0; result->i_mtime.tv_nsec = 0; result->i_atime.tv_nsec = 0; @@ -60,8 +60,7 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) if (dee.read_only) result->i_mode &= ~0222; - mutex_lock(&hpfs_i(dir)->i_mutex); - r = hpfs_add_dirent(dir, name, len, &dee, 0); + r = hpfs_add_dirent(dir, name, len, &dee); if (r == 1) goto bail3; if (r == -1) { @@ -70,21 +69,21 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) } fnode->len = len; memcpy(fnode->name, name, len > 15 ? 15 : len); - fnode->up = dir->i_ino; + fnode->up = cpu_to_le32(dir->i_ino); fnode->dirflag = 1; fnode->btree.n_free_nodes = 7; fnode->btree.n_used_nodes = 1; - fnode->btree.first_free = 0x14; - fnode->u.external[0].disk_secno = dno; - fnode->u.external[0].file_secno = -1; + fnode->btree.first_free = cpu_to_le16(0x14); + fnode->u.external[0].disk_secno = cpu_to_le32(dno); + fnode->u.external[0].file_secno = cpu_to_le32(-1); dnode->root_dnode = 1; - dnode->up = fno; + dnode->up = cpu_to_le32(fno); de = hpfs_add_de(dir->i_sb, dnode, "\001\001", 2, 0); - de->creation_date = de->write_date = de->read_date = gmt_to_local(dir->i_sb, get_seconds()); + de->creation_date = de->write_date = de->read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds())); if (!(mode & 0222)) de->read_only = 1; de->first = de->directory = 1; /*de->hidden = de->system = 0;*/ - de->fnode = fno; + de->fnode = cpu_to_le32(fno); mark_buffer_dirty(bh); brelse(bh); hpfs_mark_4buffers_dirty(&qbh0); @@ -101,11 +100,9 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) hpfs_write_inode_nolock(result); } d_instantiate(dentry, result); - mutex_unlock(&hpfs_i(dir)->i_mutex); hpfs_unlock(dir->i_sb); return 0; bail3: - mutex_unlock(&hpfs_i(dir)->i_mutex); iput(result); bail2: hpfs_brelse4(&qbh0); @@ -140,8 +137,8 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struc if (!(mode & 0222)) dee.read_only = 1; dee.archive = 1; dee.hidden = name[0] == '.'; - dee.fnode = fno; - dee.creation_date = dee.write_date = dee.read_date = gmt_to_local(dir->i_sb, get_seconds()); + dee.fnode = cpu_to_le32(fno); + dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds())); result = new_inode(dir->i_sb); if (!result) @@ -154,9 +151,8 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struc result->i_op = &hpfs_file_iops; result->i_fop = &hpfs_file_ops; result->i_nlink = 1; - hpfs_decide_conv(result, name, len); hpfs_i(result)->i_parent_dir = dir->i_ino; - result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, dee.creation_date); + result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)); result->i_ctime.tv_nsec = 0; result->i_mtime.tv_nsec = 0; result->i_atime.tv_nsec = 0; @@ -168,8 +164,7 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struc result->i_data.a_ops = &hpfs_aops; hpfs_i(result)->mmu_private = 0; - mutex_lock(&hpfs_i(dir)->i_mutex); - r = hpfs_add_dirent(dir, name, len, &dee, 0); + r = hpfs_add_dirent(dir, name, len, &dee); if (r == 1) goto bail2; if (r == -1) { @@ -178,7 +173,7 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struc } fnode->len = len; memcpy(fnode->name, name, len > 15 ? 15 : len); - fnode->up = dir->i_ino; + fnode->up = cpu_to_le32(dir->i_ino); mark_buffer_dirty(bh); brelse(bh); @@ -193,12 +188,10 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struc hpfs_write_inode_nolock(result); } d_instantiate(dentry, result); - mutex_unlock(&hpfs_i(dir)->i_mutex); hpfs_unlock(dir->i_sb); return 0; bail2: - mutex_unlock(&hpfs_i(dir)->i_mutex); iput(result); bail1: brelse(bh); @@ -232,8 +225,8 @@ static int hpfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t if (!(mode & 0222)) dee.read_only = 1; dee.archive = 1; dee.hidden = name[0] == '.'; - dee.fnode = fno; - dee.creation_date = dee.write_date = dee.read_date = gmt_to_local(dir->i_sb, get_seconds()); + dee.fnode = cpu_to_le32(fno); + dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds())); result = new_inode(dir->i_sb); if (!result) @@ -242,7 +235,7 @@ static int hpfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t hpfs_init_inode(result); result->i_ino = fno; hpfs_i(result)->i_parent_dir = dir->i_ino; - result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, dee.creation_date); + result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)); result->i_ctime.tv_nsec = 0; result->i_mtime.tv_nsec = 0; result->i_atime.tv_nsec = 0; @@ -254,8 +247,7 @@ static int hpfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t result->i_blocks = 1; init_special_inode(result, mode, rdev); - mutex_lock(&hpfs_i(dir)->i_mutex); - r = hpfs_add_dirent(dir, name, len, &dee, 0); + r = hpfs_add_dirent(dir, name, len, &dee); if (r == 1) goto bail2; if (r == -1) { @@ -264,19 +256,17 @@ static int hpfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t } fnode->len = len; memcpy(fnode->name, name, len > 15 ? 15 : len); - fnode->up = dir->i_ino; + fnode->up = cpu_to_le32(dir->i_ino); mark_buffer_dirty(bh); insert_inode_hash(result); hpfs_write_inode_nolock(result); d_instantiate(dentry, result); - mutex_unlock(&hpfs_i(dir)->i_mutex); brelse(bh); hpfs_unlock(dir->i_sb); return 0; bail2: - mutex_unlock(&hpfs_i(dir)->i_mutex); iput(result); bail1: brelse(bh); @@ -310,8 +300,8 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy memset(&dee, 0, sizeof dee); dee.archive = 1; dee.hidden = name[0] == '.'; - dee.fnode = fno; - dee.creation_date = dee.write_date = dee.read_date = gmt_to_local(dir->i_sb, get_seconds()); + dee.fnode = cpu_to_le32(fno); + dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds())); result = new_inode(dir->i_sb); if (!result) @@ -319,7 +309,7 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy result->i_ino = fno; hpfs_init_inode(result); hpfs_i(result)->i_parent_dir = dir->i_ino; - result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, dee.creation_date); + result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)); result->i_ctime.tv_nsec = 0; result->i_mtime.tv_nsec = 0; result->i_atime.tv_nsec = 0; @@ -333,8 +323,7 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy result->i_op = &page_symlink_inode_operations; result->i_data.a_ops = &hpfs_symlink_aops; - mutex_lock(&hpfs_i(dir)->i_mutex); - r = hpfs_add_dirent(dir, name, len, &dee, 0); + r = hpfs_add_dirent(dir, name, len, &dee); if (r == 1) goto bail2; if (r == -1) { @@ -343,7 +332,7 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy } fnode->len = len; memcpy(fnode->name, name, len > 15 ? 15 : len); - fnode->up = dir->i_ino; + fnode->up = cpu_to_le32(dir->i_ino); hpfs_set_ea(result, fnode, "SYMLINK", symlink, strlen(symlink)); mark_buffer_dirty(bh); brelse(bh); @@ -352,11 +341,9 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy hpfs_write_inode_nolock(result); d_instantiate(dentry, result); - mutex_unlock(&hpfs_i(dir)->i_mutex); hpfs_unlock(dir->i_sb); return 0; bail2: - mutex_unlock(&hpfs_i(dir)->i_mutex); iput(result); bail1: brelse(bh); @@ -374,7 +361,6 @@ static int hpfs_unlink(struct inode *dir, struct dentry *dentry) struct hpfs_dirent *de; struct inode *inode = dentry->d_inode; dnode_secno dno; - fnode_secno fno; int r; int rep = 0; int err; @@ -382,8 +368,6 @@ static int hpfs_unlink(struct inode *dir, struct dentry *dentry) hpfs_lock(dir->i_sb); hpfs_adjust_length(name, &len); again: - mutex_lock(&hpfs_i(inode)->i_parent_mutex); - mutex_lock(&hpfs_i(dir)->i_mutex); err = -ENOENT; de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh); if (!de) @@ -397,7 +381,6 @@ again: if (de->directory) goto out1; - fno = de->fnode; r = hpfs_remove_dirent(dir, dno, de, &qbh, 1); switch (r) { case 1: @@ -410,8 +393,6 @@ again: if (rep++) break; - mutex_unlock(&hpfs_i(dir)->i_mutex); - mutex_unlock(&hpfs_i(inode)->i_parent_mutex); dentry_unhash(dentry); if (!d_unhashed(dentry)) { dput(dentry); @@ -445,8 +426,6 @@ again: out1: hpfs_brelse4(&qbh); out: - mutex_unlock(&hpfs_i(dir)->i_mutex); - mutex_unlock(&hpfs_i(inode)->i_parent_mutex); hpfs_unlock(dir->i_sb); return err; } @@ -459,15 +438,12 @@ static int hpfs_rmdir(struct inode *dir, struct dentry *dentry) struct hpfs_dirent *de; struct inode *inode = dentry->d_inode; dnode_secno dno; - fnode_secno fno; int n_items = 0; int err; int r; hpfs_adjust_length(name, &len); hpfs_lock(dir->i_sb); - mutex_lock(&hpfs_i(inode)->i_parent_mutex); - mutex_lock(&hpfs_i(dir)->i_mutex); err = -ENOENT; de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh); if (!de) @@ -486,7 +462,6 @@ static int hpfs_rmdir(struct inode *dir, struct dentry *dentry) if (n_items) goto out1; - fno = de->fnode; r = hpfs_remove_dirent(dir, dno, de, &qbh, 1); switch (r) { case 1: @@ -505,8 +480,6 @@ static int hpfs_rmdir(struct inode *dir, struct dentry *dentry) out1: hpfs_brelse4(&qbh); out: - mutex_unlock(&hpfs_i(dir)->i_mutex); - mutex_unlock(&hpfs_i(inode)->i_parent_mutex); hpfs_unlock(dir->i_sb); return err; } @@ -568,12 +541,6 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry, hpfs_lock(i->i_sb); /* order doesn't matter, due to VFS exclusion */ - mutex_lock(&hpfs_i(i)->i_parent_mutex); - if (new_inode) - mutex_lock(&hpfs_i(new_inode)->i_parent_mutex); - mutex_lock(&hpfs_i(old_dir)->i_mutex); - if (new_dir != old_dir) - mutex_lock(&hpfs_i(new_dir)->i_mutex); /* Erm? Moving over the empty non-busy directory is perfectly legal */ if (new_inode && S_ISDIR(new_inode->i_mode)) { @@ -610,9 +577,7 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry, if (new_dir == old_dir) hpfs_brelse4(&qbh); - hpfs_lock_creation(i->i_sb); - if ((r = hpfs_add_dirent(new_dir, new_name, new_len, &de, 1))) { - hpfs_unlock_creation(i->i_sb); + if ((r = hpfs_add_dirent(new_dir, new_name, new_len, &de))) { if (r == -1) hpfs_error(new_dir->i_sb, "hpfs_rename: dirent already exists!"); err = r == 1 ? -ENOSPC : -EFSERROR; if (new_dir != old_dir) hpfs_brelse4(&qbh); @@ -621,20 +586,17 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry, if (new_dir == old_dir) if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) { - hpfs_unlock_creation(i->i_sb); hpfs_error(i->i_sb, "lookup succeeded but map dirent failed at #2"); err = -ENOENT; goto end1; } if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 0))) { - hpfs_unlock_creation(i->i_sb); hpfs_error(i->i_sb, "hpfs_rename: could not remove dirent"); err = r == 2 ? -ENOSPC : -EFSERROR; goto end1; } - hpfs_unlock_creation(i->i_sb); - + end: hpfs_i(i)->i_parent_dir = new_dir->i_ino; if (S_ISDIR(i->i_mode)) { @@ -642,22 +604,14 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry, drop_nlink(old_dir); } if ((fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) { - fnode->up = new_dir->i_ino; + fnode->up = cpu_to_le32(new_dir->i_ino); fnode->len = new_len; memcpy(fnode->name, new_name, new_len>15?15:new_len); if (new_len < 15) memset(&fnode->name[new_len], 0, 15 - new_len); mark_buffer_dirty(bh); brelse(bh); } - hpfs_i(i)->i_conv = hpfs_sb(i->i_sb)->sb_conv; - hpfs_decide_conv(i, new_name, new_len); end1: - if (old_dir != new_dir) - mutex_unlock(&hpfs_i(new_dir)->i_mutex); - mutex_unlock(&hpfs_i(old_dir)->i_mutex); - mutex_unlock(&hpfs_i(i)->i_parent_mutex); - if (new_inode) - mutex_unlock(&hpfs_i(new_inode)->i_parent_mutex); hpfs_unlock(i->i_sb); return err; } diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c index c89b40808587..98580a3b5005 100644 --- a/fs/hpfs/super.c +++ b/fs/hpfs/super.c @@ -18,15 +18,16 @@ /* Mark the filesystem dirty, so that chkdsk checks it when os/2 booted */ -static void mark_dirty(struct super_block *s) +static void mark_dirty(struct super_block *s, int remount) { - if (hpfs_sb(s)->sb_chkdsk && !(s->s_flags & MS_RDONLY)) { + if (hpfs_sb(s)->sb_chkdsk && (remount || !(s->s_flags & MS_RDONLY))) { struct buffer_head *bh; struct hpfs_spare_block *sb; if ((sb = hpfs_map_sector(s, 17, &bh, 0))) { sb->dirty = 1; sb->old_wrote = 0; mark_buffer_dirty(bh); + sync_dirty_buffer(bh); brelse(bh); } } @@ -40,10 +41,12 @@ static void unmark_dirty(struct super_block *s) struct buffer_head *bh; struct hpfs_spare_block *sb; if (s->s_flags & MS_RDONLY) return; + sync_blockdev(s->s_bdev); if ((sb = hpfs_map_sector(s, 17, &bh, 0))) { sb->dirty = hpfs_sb(s)->sb_chkdsk > 1 - hpfs_sb(s)->sb_was_error; sb->old_wrote = hpfs_sb(s)->sb_chkdsk >= 2 && !hpfs_sb(s)->sb_was_error; mark_buffer_dirty(bh); + sync_dirty_buffer(bh); brelse(bh); } } @@ -63,13 +66,13 @@ void hpfs_error(struct super_block *s, const char *fmt, ...) if (!hpfs_sb(s)->sb_was_error) { if (hpfs_sb(s)->sb_err == 2) { printk("; crashing the system because you wanted it\n"); - mark_dirty(s); + mark_dirty(s, 0); panic("HPFS panic"); } else if (hpfs_sb(s)->sb_err == 1) { if (s->s_flags & MS_RDONLY) printk("; already mounted read-only\n"); else { printk("; remounting read-only\n"); - mark_dirty(s); + mark_dirty(s, 0); s->s_flags |= MS_RDONLY; } } else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n"); @@ -102,9 +105,12 @@ static void hpfs_put_super(struct super_block *s) { struct hpfs_sb_info *sbi = hpfs_sb(s); + hpfs_lock(s); + unmark_dirty(s); + hpfs_unlock(s); + kfree(sbi->sb_cp_table); kfree(sbi->sb_bmp_dir); - unmark_dirty(s); s->s_fs_info = NULL; kfree(sbi); } @@ -129,7 +135,7 @@ static unsigned count_bitmaps(struct super_block *s) n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14; count = 0; for (n = 0; n < n_bands; n++) - count += hpfs_count_one_bitmap(s, hpfs_sb(s)->sb_bmp_dir[n]); + count += hpfs_count_one_bitmap(s, le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[n])); return count; } @@ -188,8 +194,6 @@ static void init_once(void *foo) { struct hpfs_inode_info *ei = (struct hpfs_inode_info *) foo; - mutex_init(&ei->i_mutex); - mutex_init(&ei->i_parent_mutex); inode_init_once(&ei->vfs_inode); } @@ -218,7 +222,6 @@ static void destroy_inodecache(void) enum { Opt_help, Opt_uid, Opt_gid, Opt_umask, Opt_case_lower, Opt_case_asis, - Opt_conv_binary, Opt_conv_text, Opt_conv_auto, Opt_check_none, Opt_check_normal, Opt_check_strict, Opt_err_cont, Opt_err_ro, Opt_err_panic, Opt_eas_no, Opt_eas_ro, Opt_eas_rw, @@ -233,9 +236,6 @@ static const match_table_t tokens = { {Opt_umask, "umask=%o"}, {Opt_case_lower, "case=lower"}, {Opt_case_asis, "case=asis"}, - {Opt_conv_binary, "conv=binary"}, - {Opt_conv_text, "conv=text"}, - {Opt_conv_auto, "conv=auto"}, {Opt_check_none, "check=none"}, {Opt_check_normal, "check=normal"}, {Opt_check_strict, "check=strict"}, @@ -253,7 +253,7 @@ static const match_table_t tokens = { }; static int parse_opts(char *opts, uid_t *uid, gid_t *gid, umode_t *umask, - int *lowercase, int *conv, int *eas, int *chk, int *errs, + int *lowercase, int *eas, int *chk, int *errs, int *chkdsk, int *timeshift) { char *p; @@ -295,15 +295,6 @@ static int parse_opts(char *opts, uid_t *uid, gid_t *gid, umode_t *umask, case Opt_case_asis: *lowercase = 0; break; - case Opt_conv_binary: - *conv = CONV_BINARY; - break; - case Opt_conv_text: - *conv = CONV_TEXT; - break; - case Opt_conv_auto: - *conv = CONV_AUTO; - break; case Opt_check_none: *chk = 0; break; @@ -370,9 +361,6 @@ HPFS filesystem options:\n\ umask=xxx set mode of files that don't have mode specified in eas\n\ case=lower lowercase all files\n\ case=asis do not lowercase files (default)\n\ - conv=binary do not convert CR/LF -> LF (default)\n\ - conv=auto convert only files with known text extensions\n\ - conv=text convert all files\n\ check=none no fs checks - kernel may crash on corrupted filesystem\n\ check=normal do some checks - it should not crash (default)\n\ check=strict do extra time-consuming checks, used for debugging\n\ @@ -394,7 +382,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data) uid_t uid; gid_t gid; umode_t umask; - int lowercase, conv, eas, chk, errs, chkdsk, timeshift; + int lowercase, eas, chk, errs, chkdsk, timeshift; int o; struct hpfs_sb_info *sbi = hpfs_sb(s); char *new_opts = kstrdup(data, GFP_KERNEL); @@ -405,11 +393,11 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data) lock_super(s); uid = sbi->sb_uid; gid = sbi->sb_gid; umask = 0777 & ~sbi->sb_mode; - lowercase = sbi->sb_lowercase; conv = sbi->sb_conv; + lowercase = sbi->sb_lowercase; eas = sbi->sb_eas; chk = sbi->sb_chk; chkdsk = sbi->sb_chkdsk; errs = sbi->sb_err; timeshift = sbi->sb_timeshift; - if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase, &conv, + if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase, &eas, &chk, &errs, &chkdsk, ×hift))) { printk("HPFS: bad mount options.\n"); goto out_err; @@ -427,11 +415,11 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data) sbi->sb_uid = uid; sbi->sb_gid = gid; sbi->sb_mode = 0777 & ~umask; - sbi->sb_lowercase = lowercase; sbi->sb_conv = conv; + sbi->sb_lowercase = lowercase; sbi->sb_eas = eas; sbi->sb_chk = chk; sbi->sb_chkdsk = chkdsk; sbi->sb_err = errs; sbi->sb_timeshift = timeshift; - if (!(*flags & MS_RDONLY)) mark_dirty(s); + if (!(*flags & MS_RDONLY)) mark_dirty(s, 1); replace_mount_options(s, new_opts); @@ -471,7 +459,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) uid_t uid; gid_t gid; umode_t umask; - int lowercase, conv, eas, chk, errs, chkdsk, timeshift; + int lowercase, eas, chk, errs, chkdsk, timeshift; dnode_secno root_dno; struct hpfs_dirent *de = NULL; @@ -479,11 +467,6 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) int o; - if (num_possible_cpus() > 1) { - printk(KERN_ERR "HPFS is not SMP safe\n"); - return -EINVAL; - } - save_mount_options(s, options); sbi = kzalloc(sizeof(*sbi), GFP_KERNEL); @@ -495,20 +478,20 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) sbi->sb_bmp_dir = NULL; sbi->sb_cp_table = NULL; - mutex_init(&sbi->hpfs_creation_de); + mutex_init(&sbi->hpfs_mutex); + hpfs_lock(s); uid = current_uid(); gid = current_gid(); umask = current_umask(); lowercase = 0; - conv = CONV_BINARY; eas = 2; chk = 1; errs = 1; chkdsk = 1; timeshift = 0; - if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase, &conv, + if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase, &eas, &chk, &errs, &chkdsk, ×hift))) { printk("HPFS: bad mount options.\n"); goto bail0; @@ -526,9 +509,9 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) if (!(spareblock = hpfs_map_sector(s, 17, &bh2, 0))) goto bail3; /* Check magics */ - if (/*bootblock->magic != BB_MAGIC - ||*/ superblock->magic != SB_MAGIC - || spareblock->magic != SP_MAGIC) { + if (/*le16_to_cpu(bootblock->magic) != BB_MAGIC + ||*/ le32_to_cpu(superblock->magic) != SB_MAGIC + || le32_to_cpu(spareblock->magic) != SP_MAGIC) { if (!silent) printk("HPFS: Bad magic ... probably not HPFS\n"); goto bail4; } @@ -549,19 +532,18 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) s->s_op = &hpfs_sops; s->s_d_op = &hpfs_dentry_operations; - sbi->sb_root = superblock->root; - sbi->sb_fs_size = superblock->n_sectors; - sbi->sb_bitmaps = superblock->bitmaps; - sbi->sb_dirband_start = superblock->dir_band_start; - sbi->sb_dirband_size = superblock->n_dir_band; - sbi->sb_dmap = superblock->dir_band_bitmap; + sbi->sb_root = le32_to_cpu(superblock->root); + sbi->sb_fs_size = le32_to_cpu(superblock->n_sectors); + sbi->sb_bitmaps = le32_to_cpu(superblock->bitmaps); + sbi->sb_dirband_start = le32_to_cpu(superblock->dir_band_start); + sbi->sb_dirband_size = le32_to_cpu(superblock->n_dir_band); + sbi->sb_dmap = le32_to_cpu(superblock->dir_band_bitmap); sbi->sb_uid = uid; sbi->sb_gid = gid; sbi->sb_mode = 0777 & ~umask; sbi->sb_n_free = -1; sbi->sb_n_free_dnodes = -1; sbi->sb_lowercase = lowercase; - sbi->sb_conv = conv; sbi->sb_eas = eas; sbi->sb_chk = chk; sbi->sb_chkdsk = chkdsk; @@ -573,7 +555,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) sbi->sb_max_fwd_alloc = 0xffffff; /* Load bitmap directory */ - if (!(sbi->sb_bmp_dir = hpfs_load_bitmap_directory(s, superblock->bitmaps))) + if (!(sbi->sb_bmp_dir = hpfs_load_bitmap_directory(s, le32_to_cpu(superblock->bitmaps)))) goto bail4; /* Check for general fs errors*/ @@ -591,20 +573,20 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) mark_buffer_dirty(bh2); } - if (spareblock->hotfixes_used || spareblock->n_spares_used) { + if (le32_to_cpu(spareblock->hotfixes_used) || le32_to_cpu(spareblock->n_spares_used)) { if (errs >= 2) { printk("HPFS: Hotfixes not supported here, try chkdsk\n"); - mark_dirty(s); + mark_dirty(s, 0); goto bail4; } hpfs_error(s, "hotfixes not supported here, try chkdsk"); if (errs == 0) printk("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n"); else printk("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n"); } - if (spareblock->n_dnode_spares != spareblock->n_dnode_spares_free) { + if (le32_to_cpu(spareblock->n_dnode_spares) != le32_to_cpu(spareblock->n_dnode_spares_free)) { if (errs >= 2) { printk("HPFS: Spare dnodes used, try chkdsk\n"); - mark_dirty(s); + mark_dirty(s, 0); goto bail4; } hpfs_error(s, "warning: spare dnodes used, try chkdsk"); @@ -612,26 +594,26 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) } if (chk) { unsigned a; - if (superblock->dir_band_end - superblock->dir_band_start + 1 != superblock->n_dir_band || - superblock->dir_band_end < superblock->dir_band_start || superblock->n_dir_band > 0x4000) { + if (le32_to_cpu(superblock->dir_band_end) - le32_to_cpu(superblock->dir_band_start) + 1 != le32_to_cpu(superblock->n_dir_band) || + le32_to_cpu(superblock->dir_band_end) < le32_to_cpu(superblock->dir_band_start) || le32_to_cpu(superblock->n_dir_band) > 0x4000) { hpfs_error(s, "dir band size mismatch: dir_band_start==%08x, dir_band_end==%08x, n_dir_band==%08x", - superblock->dir_band_start, superblock->dir_band_end, superblock->n_dir_band); + le32_to_cpu(superblock->dir_band_start), le32_to_cpu(superblock->dir_band_end), le32_to_cpu(superblock->n_dir_band)); goto bail4; } a = sbi->sb_dirband_size; sbi->sb_dirband_size = 0; - if (hpfs_chk_sectors(s, superblock->dir_band_start, superblock->n_dir_band, "dir_band") || - hpfs_chk_sectors(s, superblock->dir_band_bitmap, 4, "dir_band_bitmap") || - hpfs_chk_sectors(s, superblock->bitmaps, 4, "bitmaps")) { - mark_dirty(s); + if (hpfs_chk_sectors(s, le32_to_cpu(superblock->dir_band_start), le32_to_cpu(superblock->n_dir_band), "dir_band") || + hpfs_chk_sectors(s, le32_to_cpu(superblock->dir_band_bitmap), 4, "dir_band_bitmap") || + hpfs_chk_sectors(s, le32_to_cpu(superblock->bitmaps), 4, "bitmaps")) { + mark_dirty(s, 0); goto bail4; } sbi->sb_dirband_size = a; } else printk("HPFS: You really don't want any checks? You are crazy...\n"); /* Load code page table */ - if (spareblock->n_code_pages) - if (!(sbi->sb_cp_table = hpfs_load_code_page(s, spareblock->code_page_dir))) + if (le32_to_cpu(spareblock->n_code_pages)) + if (!(sbi->sb_cp_table = hpfs_load_code_page(s, le32_to_cpu(spareblock->code_page_dir)))) printk("HPFS: Warning: code page support is disabled\n"); brelse(bh2); @@ -660,13 +642,13 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) if (!de) hpfs_error(s, "unable to find root dir"); else { - root->i_atime.tv_sec = local_to_gmt(s, de->read_date); + root->i_atime.tv_sec = local_to_gmt(s, le32_to_cpu(de->read_date)); root->i_atime.tv_nsec = 0; - root->i_mtime.tv_sec = local_to_gmt(s, de->write_date); + root->i_mtime.tv_sec = local_to_gmt(s, le32_to_cpu(de->write_date)); root->i_mtime.tv_nsec = 0; - root->i_ctime.tv_sec = local_to_gmt(s, de->creation_date); + root->i_ctime.tv_sec = local_to_gmt(s, le32_to_cpu(de->creation_date)); root->i_ctime.tv_nsec = 0; - hpfs_i(root)->i_ea_size = de->ea_size; + hpfs_i(root)->i_ea_size = le16_to_cpu(de->ea_size); hpfs_i(root)->i_parent_dir = root->i_ino; if (root->i_size == -1) root->i_size = 2048; @@ -674,6 +656,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) root->i_blocks = 5; hpfs_brelse4(&qbh); } + hpfs_unlock(s); return 0; bail4: brelse(bh2); @@ -681,6 +664,7 @@ bail3: brelse(bh1); bail2: brelse(bh0); bail1: bail0: + hpfs_unlock(s); kfree(sbi->sb_bmp_dir); kfree(sbi->sb_cp_table); s->s_fs_info = NULL; diff --git a/fs/logfs/super.c b/fs/logfs/super.c index 33435e4b14d2..ce03a182c771 100644 --- a/fs/logfs/super.c +++ b/fs/logfs/super.c @@ -480,10 +480,6 @@ static int logfs_read_sb(struct super_block *sb, int read_only) !read_only) return -EIO; - mutex_init(&super->s_dirop_mutex); - mutex_init(&super->s_object_alias_mutex); - INIT_LIST_HEAD(&super->s_freeing_list); - ret = logfs_init_rw(sb); if (ret) return ret; @@ -601,6 +597,10 @@ static struct dentry *logfs_mount(struct file_system_type *type, int flags, if (!super) return ERR_PTR(-ENOMEM); + mutex_init(&super->s_dirop_mutex); + mutex_init(&super->s_object_alias_mutex); + INIT_LIST_HEAD(&super->s_freeing_list); + if (!devname) err = logfs_get_sb_bdev(super, type, devname); else if (strncmp(devname, "mtd", 3)) diff --git a/fs/namei.c b/fs/namei.c index e6cd6113872c..54fc993e3027 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -697,6 +697,7 @@ static __always_inline void set_root_rcu(struct nameidata *nd) do { seq = read_seqcount_begin(&fs->seq); nd->root = fs->root; + nd->seq = __read_seqcount_begin(&nd->root.dentry->d_seq); } while (read_seqcount_retry(&fs->seq, seq)); } } diff --git a/fs/namespace.c b/fs/namespace.c index 7dba2ed03429..d99bcf59e4c2 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1030,18 +1030,6 @@ const struct seq_operations mounts_op = { .show = show_vfsmnt }; -static int uuid_is_nil(u8 *uuid) -{ - int i; - u8 *cp = (u8 *)uuid; - - for (i = 0; i < 16; i++) { - if (*cp++) - return 0; - } - return 1; -} - static int show_mountinfo(struct seq_file *m, void *v) { struct proc_mounts *p = m->private; @@ -1085,10 +1073,6 @@ static int show_mountinfo(struct seq_file *m, void *v) if (IS_MNT_UNBINDABLE(mnt)) seq_puts(m, " unbindable"); - if (!uuid_is_nil(mnt->mnt_sb->s_uuid)) - /* print the uuid */ - seq_printf(m, " uuid:%pU", mnt->mnt_sb->s_uuid); - /* Filesystem specific data */ seq_puts(m, " - "); show_type(m, sb); diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index 89fc160fd5b0..1f063bacd285 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -119,7 +119,7 @@ Elong: } #ifdef CONFIG_NFS_V4 -static rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *flavors, struct inode *inode) +static rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *flavors) { struct gss_api_mech *mech; struct xdr_netobj oid; @@ -166,7 +166,7 @@ static int nfs_negotiate_security(const struct dentry *parent, } flavors = page_address(page); ret = secinfo(parent->d_inode, &dentry->d_name, flavors); - *flavor = nfs_find_best_sec(flavors, dentry->d_inode); + *flavor = nfs_find_best_sec(flavors); put_page(page); } diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index e1c261ddd65d..c4a69833dd0d 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -47,6 +47,7 @@ enum nfs4_client_state { NFS4CLNT_LAYOUTRECALL, NFS4CLNT_SESSION_RESET, NFS4CLNT_RECALL_SLOT, + NFS4CLNT_LEASE_CONFIRM, }; enum nfs4_session_state { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 9bf41eab3e46..69c0f3c5ee7a 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -46,6 +46,7 @@ #include <linux/nfs4.h> #include <linux/nfs_fs.h> #include <linux/nfs_page.h> +#include <linux/nfs_mount.h> #include <linux/namei.h> #include <linux/mount.h> #include <linux/module.h> @@ -443,8 +444,8 @@ static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res * if (res->sr_status == 1) res->sr_status = NFS_OK; - /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */ - if (!res->sr_slot) + /* don't increment the sequence number if the task wasn't sent */ + if (!RPC_WAS_SENT(task)) goto out; /* Check the SEQUENCE operation status */ @@ -2185,9 +2186,14 @@ static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs4_exception exception = { }; int err; do { - err = nfs4_handle_exception(server, - _nfs4_lookup_root(server, fhandle, info), - &exception); + err = _nfs4_lookup_root(server, fhandle, info); + switch (err) { + case 0: + case -NFS4ERR_WRONGSEC: + break; + default: + err = nfs4_handle_exception(server, err, &exception); + } } while (exception.retry); return err; } @@ -2208,25 +2214,47 @@ out: return ret; } -/* - * get the file handle for the "/" directory on the server - */ -static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, +static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *info) { int i, len, status = 0; - rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS + 2]; + rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; - flav_array[0] = RPC_AUTH_UNIX; - len = gss_mech_list_pseudoflavors(&flav_array[1]); - flav_array[1+len] = RPC_AUTH_NULL; - len += 2; + len = gss_mech_list_pseudoflavors(&flav_array[0]); + flav_array[len] = RPC_AUTH_NULL; + len += 1; for (i = 0; i < len; i++) { status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); - if (status != -EPERM) - break; + if (status == -NFS4ERR_WRONGSEC || status == -EACCES) + continue; + break; } + /* + * -EACCESS could mean that the user doesn't have correct permissions + * to access the mount. It could also mean that we tried to mount + * with a gss auth flavor, but rpc.gssd isn't running. Either way, + * existing mount programs don't handle -EACCES very well so it should + * be mapped to -EPERM instead. + */ + if (status == -EACCES) + status = -EPERM; + return status; +} + +/* + * get the file handle for the "/" directory on the server + */ +static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, + struct nfs_fsinfo *info) +{ + int status = nfs4_lookup_root(server, fhandle, info); + if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) + /* + * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM + * by nfs4_map_errors() as this function exits. + */ + status = nfs4_find_root_sec(server, fhandle, info); if (status == 0) status = nfs4_server_capabilities(server, fhandle); if (status == 0) @@ -3723,21 +3751,20 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, sizeof(setclientid.sc_uaddr), "%s.%u.%u", clp->cl_ipaddr, port >> 8, port & 255); - status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); + status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (status != -NFS4ERR_CLID_INUSE) break; - if (signalled()) + if (loop != 0) { + ++clp->cl_id_uniquifier; break; - if (loop++ & 1) - ssleep(clp->cl_lease_time / HZ + 1); - else - if (++clp->cl_id_uniquifier == 0) - break; + } + ++loop; + ssleep(clp->cl_lease_time / HZ + 1); } return status; } -static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, +int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct nfs4_setclientid_res *arg, struct rpc_cred *cred) { @@ -3752,7 +3779,7 @@ static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, int status; now = jiffies; - status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); + status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (status == 0) { spin_lock(&clp->cl_lock); clp->cl_lease_time = fsinfo.lease_time * HZ; @@ -3762,26 +3789,6 @@ static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, return status; } -int nfs4_proc_setclientid_confirm(struct nfs_client *clp, - struct nfs4_setclientid_res *arg, - struct rpc_cred *cred) -{ - long timeout = 0; - int err; - do { - err = _nfs4_proc_setclientid_confirm(clp, arg, cred); - switch (err) { - case 0: - return err; - case -NFS4ERR_RESOURCE: - /* The IBM lawyers misread another document! */ - case -NFS4ERR_DELAY: - err = nfs4_delay(clp->cl_rpcclient, &timeout); - } - } while (err == 0); - return err; -} - struct nfs4_delegreturndata { struct nfs4_delegreturnargs args; struct nfs4_delegreturnres res; @@ -4786,7 +4793,7 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) init_utsname()->domainname, clp->cl_rpcclient->cl_auth->au_flavor); - status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); + status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (!status) status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); dprintk("<-- %s status= %d\n", __func__, status); @@ -4869,7 +4876,8 @@ int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) .rpc_client = clp->cl_rpcclient, .rpc_message = &msg, .callback_ops = &nfs4_get_lease_time_ops, - .callback_data = &data + .callback_data = &data, + .flags = RPC_TASK_TIMEOUT, }; int status; @@ -5171,7 +5179,7 @@ static int _nfs4_proc_create_session(struct nfs_client *clp) nfs4_init_channel_attrs(&args); args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); - status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); + status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (!status) /* Verify the session's negotiated channel_attrs values */ @@ -5194,20 +5202,10 @@ int nfs4_proc_create_session(struct nfs_client *clp) int status; unsigned *ptr; struct nfs4_session *session = clp->cl_session; - long timeout = 0; - int err; dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); - do { - status = _nfs4_proc_create_session(clp); - if (status == -NFS4ERR_DELAY) { - err = nfs4_delay(clp->cl_rpcclient, &timeout); - if (err) - status = err; - } - } while (status == -NFS4ERR_DELAY); - + status = _nfs4_proc_create_session(clp); if (status) goto out; @@ -5248,7 +5246,7 @@ int nfs4_proc_destroy_session(struct nfs4_session *session) msg.rpc_argp = session; msg.rpc_resp = NULL; msg.rpc_cred = NULL; - status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); + status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (status) printk(KERN_WARNING diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index a6804f704d9d..036f5adc9e1f 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -64,10 +64,15 @@ static LIST_HEAD(nfs4_clientid_list); int nfs4_init_clientid(struct nfs_client *clp, struct rpc_cred *cred) { - struct nfs4_setclientid_res clid; + struct nfs4_setclientid_res clid = { + .clientid = clp->cl_clientid, + .confirm = clp->cl_confirm, + }; unsigned short port; int status; + if (test_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state)) + goto do_confirm; port = nfs_callback_tcpport; if (clp->cl_addr.ss_family == AF_INET6) port = nfs_callback_tcpport6; @@ -75,10 +80,14 @@ int nfs4_init_clientid(struct nfs_client *clp, struct rpc_cred *cred) status = nfs4_proc_setclientid(clp, NFS4_CALLBACK, port, cred, &clid); if (status != 0) goto out; + clp->cl_clientid = clid.clientid; + clp->cl_confirm = clid.confirm; + set_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state); +do_confirm: status = nfs4_proc_setclientid_confirm(clp, &clid, cred); if (status != 0) goto out; - clp->cl_clientid = clid.clientid; + clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state); nfs4_schedule_state_renewal(clp); out: return status; @@ -230,13 +239,18 @@ int nfs41_init_clientid(struct nfs_client *clp, struct rpc_cred *cred) { int status; + if (test_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state)) + goto do_confirm; nfs4_begin_drain_session(clp); status = nfs4_proc_exchange_id(clp, cred); if (status != 0) goto out; + set_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state); +do_confirm: status = nfs4_proc_create_session(clp); if (status != 0) goto out; + clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state); nfs41_setup_state_renewal(clp); nfs_mark_client_ready(clp, NFS_CS_READY); out: @@ -1584,20 +1598,23 @@ static int nfs4_recall_slot(struct nfs_client *clp) { return 0; } */ static void nfs4_set_lease_expired(struct nfs_client *clp, int status) { - if (nfs4_has_session(clp)) { - switch (status) { - case -NFS4ERR_DELAY: - case -NFS4ERR_CLID_INUSE: - case -EAGAIN: - break; + switch (status) { + case -NFS4ERR_CLID_INUSE: + case -NFS4ERR_STALE_CLIENTID: + clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state); + break; + case -NFS4ERR_DELAY: + case -ETIMEDOUT: + case -EAGAIN: + ssleep(1); + break; - case -EKEYEXPIRED: - nfs4_warn_keyexpired(clp->cl_hostname); - case -NFS4ERR_NOT_SAME: /* FixMe: implement recovery - * in nfs4_exchange_id */ - default: - return; - } + case -EKEYEXPIRED: + nfs4_warn_keyexpired(clp->cl_hostname); + case -NFS4ERR_NOT_SAME: /* FixMe: implement recovery + * in nfs4_exchange_id */ + default: + return; } set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); } @@ -1607,7 +1624,7 @@ static void nfs4_state_manager(struct nfs_client *clp) int status = 0; /* Ensure exclusive access to NFSv4 state */ - for(;;) { + do { if (test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) { /* We're going to have to re-establish a clientid */ status = nfs4_reclaim_lease(clp); @@ -1691,7 +1708,7 @@ static void nfs4_state_manager(struct nfs_client *clp) break; if (test_and_set_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) != 0) break; - } + } while (atomic_read(&clp->cl_count) > 1); return; out_error: printk(KERN_WARNING "Error: state manager failed on NFSv4 server %s" diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index dddfb5795d7b..c3ccd2c46834 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1452,26 +1452,25 @@ static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) { - uint32_t attrs[2] = {0, 0}; + uint32_t attrs[2] = { + FATTR4_WORD0_RDATTR_ERROR, + FATTR4_WORD1_MOUNTED_ON_FILEID, + }; uint32_t dircount = readdir->count >> 1; __be32 *p; if (readdir->plus) { attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE| - FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE; + FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID; attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER| FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV| FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS| FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; dircount >>= 1; } - attrs[0] |= FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID; - attrs[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; - /* Switch to mounted_on_fileid if the server supports it */ - if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) - attrs[0] &= ~FATTR4_WORD0_FILEID; - else - attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; + /* Use mounted_on_fileid only if the server supports it */ + if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) + attrs[0] |= FATTR4_WORD0_FILEID; p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20); *p++ = cpu_to_be32(OP_READDIR); @@ -3140,7 +3139,7 @@ static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitma goto out_overflow; xdr_decode_hyper(p, fileid); bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; - ret = NFS_ATTR_FATTR_FILEID; + ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; } dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); return ret; @@ -4002,7 +4001,6 @@ static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, { int status; umode_t fmode = 0; - uint64_t fileid; uint32_t type; status = decode_attr_type(xdr, bitmap, &type); @@ -4101,13 +4099,10 @@ static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, goto xdr_error; fattr->valid |= status; - status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid); + status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); if (status < 0) goto xdr_error; - if (status != 0 && !(fattr->valid & status)) { - fattr->fileid = fileid; - fattr->valid |= status; - } + fattr->valid |= status; xdr_error: dprintk("%s: xdr returned %d\n", __func__, -status); @@ -4838,17 +4833,21 @@ static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) struct nfs4_secinfo_flavor *sec_flavor; int status; __be32 *p; - int i; + int i, num_flavors; status = decode_op_hdr(xdr, OP_SECINFO); + if (status) + goto out; p = xdr_inline_decode(xdr, 4); if (unlikely(!p)) goto out_overflow; - res->flavors->num_flavors = be32_to_cpup(p); - for (i = 0; i < res->flavors->num_flavors; i++) { + res->flavors->num_flavors = 0; + num_flavors = be32_to_cpup(p); + + for (i = 0; i < num_flavors; i++) { sec_flavor = &res->flavors->flavors[i]; - if ((char *)&sec_flavor[1] - (char *)res > PAGE_SIZE) + if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) break; p = xdr_inline_decode(xdr, 4); @@ -4857,13 +4856,15 @@ static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) sec_flavor->flavor = be32_to_cpup(p); if (sec_flavor->flavor == RPC_AUTH_GSS) { - if (decode_secinfo_gss(xdr, sec_flavor)) - break; + status = decode_secinfo_gss(xdr, sec_flavor); + if (status) + goto out; } + res->flavors->num_flavors++; } - return 0; - +out: + return status; out_overflow: print_overflow_msg(__func__, xdr); return -EIO; @@ -6408,7 +6409,9 @@ int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, entry->server, 1) < 0) goto out_overflow; - if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) + if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) + entry->ino = entry->fattr->mounted_on_fileid; + else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) entry->ino = entry->fattr->fileid; entry->d_type = DT_UNKNOWN; diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index d9ab97269ce6..ff681ab65d31 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1004,6 +1004,7 @@ pnfs_set_layoutcommit(struct nfs_write_data *wdata) { struct nfs_inode *nfsi = NFS_I(wdata->inode); loff_t end_pos = wdata->args.offset + wdata->res.count; + bool mark_as_dirty = false; spin_lock(&nfsi->vfs_inode.i_lock); if (!test_and_set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) { @@ -1011,13 +1012,18 @@ pnfs_set_layoutcommit(struct nfs_write_data *wdata) get_lseg(wdata->lseg); wdata->lseg->pls_lc_cred = get_rpccred(wdata->args.context->state->owner->so_cred); - mark_inode_dirty_sync(wdata->inode); + mark_as_dirty = true; dprintk("%s: Set layoutcommit for inode %lu ", __func__, wdata->inode->i_ino); } if (end_pos > wdata->lseg->pls_end_pos) wdata->lseg->pls_end_pos = end_pos; spin_unlock(&nfsi->vfs_inode.i_lock); + + /* if pnfs_layoutcommit_inode() runs between inode locks, the next one + * will be a noop because NFS_INO_LAYOUTCOMMIT will not be set */ + if (mark_as_dirty) + mark_inode_dirty_sync(wdata->inode); } EXPORT_SYMBOL_GPL(pnfs_set_layoutcommit); diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 2b8e9a5e366a..e288f06d3fa7 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -1004,6 +1004,7 @@ static int nfs_parse_security_flavors(char *value, return 0; } + mnt->flags |= NFS_MOUNT_SECFLAVOUR; mnt->auth_flavor_len = 1; return 1; } @@ -1976,6 +1977,15 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data) if (error < 0) goto out; + /* + * noac is a special case. It implies -o sync, but that's not + * necessarily reflected in the mtab options. do_remount_sb + * will clear MS_SYNCHRONOUS if -o sync wasn't specified in the + * remount options, so we have to explicitly reset it. + */ + if (data->flags & NFS_MOUNT_NOAC) + *flags |= MS_SYNCHRONOUS; + /* compare new mount options with old ones */ error = nfs_compare_remount_data(nfss, data); out: @@ -2235,8 +2245,7 @@ static struct dentry *nfs_fs_mount(struct file_system_type *fs_type, if (!s->s_root) { /* initial superblock/root creation */ nfs_fill_super(s, data); - nfs_fscache_get_super_cookie( - s, data ? data->fscache_uniq : NULL, NULL); + nfs_fscache_get_super_cookie(s, data->fscache_uniq, NULL); } mntroot = nfs_get_root(s, mntfh, dev_name); diff --git a/fs/nfs/write.c b/fs/nfs/write.c index af0c6279a4a7..3bd5d7e80f6c 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -542,11 +542,15 @@ nfs_scan_commit(struct inode *inode, struct list_head *dst, pgoff_t idx_start, u if (!nfs_need_commit(nfsi)) return 0; + spin_lock(&inode->i_lock); ret = nfs_scan_list(nfsi, dst, idx_start, npages, NFS_PAGE_TAG_COMMIT); if (ret > 0) nfsi->ncommit -= ret; + spin_unlock(&inode->i_lock); + if (nfs_need_commit(NFS_I(inode))) __mark_inode_dirty(inode, I_DIRTY_DATASYNC); + return ret; } #else @@ -676,7 +680,6 @@ static int nfs_writepage_setup(struct nfs_open_context *ctx, struct page *page, req = nfs_setup_write_request(ctx, page, offset, count); if (IS_ERR(req)) return PTR_ERR(req); - nfs_mark_request_dirty(req); /* Update file length */ nfs_grow_file(page, offset, count); nfs_mark_uptodate(page, req->wb_pgbase, req->wb_bytes); @@ -1414,8 +1417,7 @@ static void nfs_commit_done(struct rpc_task *task, void *calldata) task->tk_pid, task->tk_status); /* Call the NFS version-specific code */ - if (NFS_PROTO(data->inode)->commit_done(task, data) != 0) - return; + NFS_PROTO(data->inode)->commit_done(task, data); } void nfs_commit_release_pages(struct nfs_write_data *data) @@ -1483,9 +1485,7 @@ int nfs_commit_inode(struct inode *inode, int how) res = nfs_commit_set_lock(NFS_I(inode), may_wait); if (res <= 0) goto out_mark_dirty; - spin_lock(&inode->i_lock); res = nfs_scan_commit(inode, &head, 0, 0); - spin_unlock(&inode->i_lock); if (res) { int error; diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index aa309aa93fe8..4cf04e11c66c 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -258,6 +258,7 @@ static void nfs4_put_deleg_lease(struct nfs4_file *fp) if (atomic_dec_and_test(&fp->fi_delegees)) { vfs_setlease(fp->fi_deleg_file, F_UNLCK, &fp->fi_lease); fp->fi_lease = NULL; + fput(fp->fi_deleg_file); fp->fi_deleg_file = NULL; } } @@ -402,8 +403,8 @@ static void free_generic_stateid(struct nfs4_stateid *stp) if (stp->st_access_bmap) { oflag = nfs4_access_bmap_to_omode(stp); nfs4_file_put_access(stp->st_file, oflag); - put_nfs4_file(stp->st_file); } + put_nfs4_file(stp->st_file); kmem_cache_free(stateid_slab, stp); } diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 2e1cebde90df..129f3c9f62d5 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1363,7 +1363,7 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp, goto out; if (!(iap->ia_valid & ATTR_MODE)) iap->ia_mode = 0; - err = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_CREATE); + err = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_EXEC); if (err) goto out; @@ -1385,6 +1385,13 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp, if (IS_ERR(dchild)) goto out_nfserr; + /* If file doesn't exist, check for permissions to create one */ + if (!dchild->d_inode) { + err = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_CREATE); + if (err) + goto out; + } + err = fh_compose(resfhp, fhp->fh_export, dchild, fhp); if (err) goto out; diff --git a/fs/nilfs2/alloc.c b/fs/nilfs2/alloc.c index 0a0a66d98cce..f7684483785e 100644 --- a/fs/nilfs2/alloc.c +++ b/fs/nilfs2/alloc.c @@ -646,7 +646,7 @@ int nilfs_palloc_freev(struct inode *inode, __u64 *entry_nrs, size_t nitems) unsigned long group, group_offset; int i, j, n, ret; - for (i = 0; i < nitems; i += n) { + for (i = 0; i < nitems; i = j) { group = nilfs_palloc_group(inode, entry_nrs[i], &group_offset); ret = nilfs_palloc_get_desc_block(inode, group, 0, &desc_bh); if (ret < 0) diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h index b68f87a83924..938387a10d5d 100644 --- a/fs/ocfs2/ocfs2_fs.h +++ b/fs/ocfs2/ocfs2_fs.h @@ -1019,7 +1019,7 @@ struct ocfs2_xattr_entry { __le16 xe_name_offset; /* byte offset from the 1st entry in the local xattr storage(inode, xattr block or xattr bucket). */ - __u8 xe_name_len; /* xattr name len, does't include prefix. */ + __u8 xe_name_len; /* xattr name len, doesn't include prefix. */ __u8 xe_type; /* the low 7 bits indicate the name prefix * type and the highest bit indicates whether * the EA is stored in the local storage. */ diff --git a/fs/partitions/efi.c b/fs/partitions/efi.c index ac0ccb5026a2..19d6750d1d6c 100644 --- a/fs/partitions/efi.c +++ b/fs/partitions/efi.c @@ -348,6 +348,12 @@ static int is_gpt_valid(struct parsed_partitions *state, u64 lba, goto fail; } + /* Check that sizeof_partition_entry has the correct value */ + if (le32_to_cpu((*gpt)->sizeof_partition_entry) != sizeof(gpt_entry)) { + pr_debug("GUID Partitition Entry Size check failed.\n"); + goto fail; + } + if (!(*ptes = alloc_read_gpt_entries(state, *gpt))) goto fail; diff --git a/fs/partitions/ldm.c b/fs/partitions/ldm.c index b10e3540d5b7..ce4f62440425 100644 --- a/fs/partitions/ldm.c +++ b/fs/partitions/ldm.c @@ -1299,6 +1299,11 @@ static bool ldm_frag_add (const u8 *data, int size, struct list_head *frags) BUG_ON (!data || !frags); + if (size < 2 * VBLK_SIZE_HEAD) { + ldm_error("Value of size is to small."); + return false; + } + group = get_unaligned_be32(data + 0x08); rec = get_unaligned_be16(data + 0x0C); num = get_unaligned_be16(data + 0x0E); @@ -1306,6 +1311,10 @@ static bool ldm_frag_add (const u8 *data, int size, struct list_head *frags) ldm_error ("A VBLK claims to have %d parts.", num); return false; } + if (rec >= num) { + ldm_error("REC value (%d) exceeds NUM value (%d)", rec, num); + return false; + } list_for_each (item, frags) { f = list_entry (item, struct frag, list); @@ -1334,10 +1343,9 @@ found: f->map |= (1 << rec); - if (num > 0) { - data += VBLK_SIZE_HEAD; - size -= VBLK_SIZE_HEAD; - } + data += VBLK_SIZE_HEAD; + size -= VBLK_SIZE_HEAD; + memcpy (f->data+rec*(size-VBLK_SIZE_HEAD)+VBLK_SIZE_HEAD, data, size); return true; diff --git a/fs/proc/base.c b/fs/proc/base.c index dd6628d3ba42..dfa532730e55 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -3124,11 +3124,16 @@ static int proc_pid_fill_cache(struct file *filp, void *dirent, filldir_t filldi /* for the /proc/ directory itself, after non-process stuff has been done */ int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir) { - unsigned int nr = filp->f_pos - FIRST_PROCESS_ENTRY; - struct task_struct *reaper = get_proc_task(filp->f_path.dentry->d_inode); + unsigned int nr; + struct task_struct *reaper; struct tgid_iter iter; struct pid_namespace *ns; + if (filp->f_pos >= PID_MAX_LIMIT + TGID_OFFSET) + goto out_no_task; + nr = filp->f_pos - FIRST_PROCESS_ENTRY; + + reaper = get_proc_task(filp->f_path.dentry->d_inode); if (!reaper) goto out_no_task; diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 2e7addfd9803..318d8654989b 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -214,7 +214,7 @@ static void show_map_vma(struct seq_file *m, struct vm_area_struct *vma) int flags = vma->vm_flags; unsigned long ino = 0; unsigned long long pgoff = 0; - unsigned long start; + unsigned long start, end; dev_t dev = 0; int len; @@ -227,13 +227,15 @@ static void show_map_vma(struct seq_file *m, struct vm_area_struct *vma) /* We don't show the stack guard page in /proc/maps */ start = vma->vm_start; - if (vma->vm_flags & VM_GROWSDOWN) - if (!vma_stack_continue(vma->vm_prev, vma->vm_start)) - start += PAGE_SIZE; + if (stack_guard_page_start(vma, start)) + start += PAGE_SIZE; + end = vma->vm_end; + if (stack_guard_page_end(vma, end)) + end -= PAGE_SIZE; seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n", start, - vma->vm_end, + end, flags & VM_READ ? 'r' : '-', flags & VM_WRITE ? 'w' : '-', flags & VM_EXEC ? 'x' : '-', diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c index 9eead2c796b7..fbb0b478a346 100644 --- a/fs/ramfs/file-nommu.c +++ b/fs/ramfs/file-nommu.c @@ -112,6 +112,7 @@ int ramfs_nommu_expand_for_mapping(struct inode *inode, size_t newsize) SetPageDirty(page); unlock_page(page); + put_page(page); } return 0; diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h index 919f0de29d8f..e6493cac193d 100644 --- a/fs/ubifs/debug.h +++ b/fs/ubifs/debug.h @@ -23,6 +23,12 @@ #ifndef __UBIFS_DEBUG_H__ #define __UBIFS_DEBUG_H__ +/* Checking helper functions */ +typedef int (*dbg_leaf_callback)(struct ubifs_info *c, + struct ubifs_zbranch *zbr, void *priv); +typedef int (*dbg_znode_callback)(struct ubifs_info *c, + struct ubifs_znode *znode, void *priv); + #ifdef CONFIG_UBIFS_FS_DEBUG /** @@ -270,11 +276,6 @@ void dbg_dump_tnc(struct ubifs_info *c); void dbg_dump_index(struct ubifs_info *c); void dbg_dump_lpt_lebs(const struct ubifs_info *c); -/* Checking helper functions */ -typedef int (*dbg_leaf_callback)(struct ubifs_info *c, - struct ubifs_zbranch *zbr, void *priv); -typedef int (*dbg_znode_callback)(struct ubifs_info *c, - struct ubifs_znode *znode, void *priv); int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb, dbg_znode_callback znode_cb, void *priv); @@ -295,7 +296,6 @@ int dbg_check_idx_size(struct ubifs_info *c, long long idx_size); int dbg_check_filesystem(struct ubifs_info *c); void dbg_check_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat, int add_pos); -int dbg_check_lprops(struct ubifs_info *c); int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode, int row, int col); int dbg_check_inode_size(struct ubifs_info *c, const struct inode *inode, @@ -401,58 +401,94 @@ void dbg_debugfs_exit_fs(struct ubifs_info *c); #define DBGKEY(key) ((char *)(key)) #define DBGKEY1(key) ((char *)(key)) -#define ubifs_debugging_init(c) 0 -#define ubifs_debugging_exit(c) ({}) - -#define dbg_ntype(type) "" -#define dbg_cstate(cmt_state) "" -#define dbg_jhead(jhead) "" -#define dbg_get_key_dump(c, key) ({}) -#define dbg_dump_inode(c, inode) ({}) -#define dbg_dump_node(c, node) ({}) -#define dbg_dump_lpt_node(c, node, lnum, offs) ({}) -#define dbg_dump_budget_req(req) ({}) -#define dbg_dump_lstats(lst) ({}) -#define dbg_dump_budg(c) ({}) -#define dbg_dump_lprop(c, lp) ({}) -#define dbg_dump_lprops(c) ({}) -#define dbg_dump_lpt_info(c) ({}) -#define dbg_dump_leb(c, lnum) ({}) -#define dbg_dump_znode(c, znode) ({}) -#define dbg_dump_heap(c, heap, cat) ({}) -#define dbg_dump_pnode(c, pnode, parent, iip) ({}) -#define dbg_dump_tnc(c) ({}) -#define dbg_dump_index(c) ({}) -#define dbg_dump_lpt_lebs(c) ({}) - -#define dbg_walk_index(c, leaf_cb, znode_cb, priv) 0 -#define dbg_old_index_check_init(c, zroot) 0 -#define dbg_save_space_info(c) ({}) -#define dbg_check_space_info(c) 0 -#define dbg_check_old_index(c, zroot) 0 -#define dbg_check_cats(c) 0 -#define dbg_check_ltab(c) 0 -#define dbg_chk_lpt_free_spc(c) 0 -#define dbg_chk_lpt_sz(c, action, len) 0 -#define dbg_check_synced_i_size(inode) 0 -#define dbg_check_dir_size(c, dir) 0 -#define dbg_check_tnc(c, x) 0 -#define dbg_check_idx_size(c, idx_size) 0 -#define dbg_check_filesystem(c) 0 -#define dbg_check_heap(c, heap, cat, add_pos) ({}) -#define dbg_check_lprops(c) 0 -#define dbg_check_lpt_nodes(c, cnode, row, col) 0 -#define dbg_check_inode_size(c, inode, size) 0 -#define dbg_check_data_nodes_order(c, head) 0 -#define dbg_check_nondata_nodes_order(c, head) 0 -#define dbg_force_in_the_gaps_enabled 0 -#define dbg_force_in_the_gaps() 0 -#define dbg_failure_mode 0 - -#define dbg_debugfs_init() 0 -#define dbg_debugfs_exit() -#define dbg_debugfs_init_fs(c) 0 -#define dbg_debugfs_exit_fs(c) 0 +static inline int ubifs_debugging_init(struct ubifs_info *c) { return 0; } +static inline void ubifs_debugging_exit(struct ubifs_info *c) { return; } +static inline const char *dbg_ntype(int type) { return ""; } +static inline const char *dbg_cstate(int cmt_state) { return ""; } +static inline const char *dbg_jhead(int jhead) { return ""; } +static inline const char * +dbg_get_key_dump(const struct ubifs_info *c, + const union ubifs_key *key) { return ""; } +static inline void dbg_dump_inode(const struct ubifs_info *c, + const struct inode *inode) { return; } +static inline void dbg_dump_node(const struct ubifs_info *c, + const void *node) { return; } +static inline void dbg_dump_lpt_node(const struct ubifs_info *c, + void *node, int lnum, + int offs) { return; } +static inline void +dbg_dump_budget_req(const struct ubifs_budget_req *req) { return; } +static inline void +dbg_dump_lstats(const struct ubifs_lp_stats *lst) { return; } +static inline void dbg_dump_budg(struct ubifs_info *c) { return; } +static inline void dbg_dump_lprop(const struct ubifs_info *c, + const struct ubifs_lprops *lp) { return; } +static inline void dbg_dump_lprops(struct ubifs_info *c) { return; } +static inline void dbg_dump_lpt_info(struct ubifs_info *c) { return; } +static inline void dbg_dump_leb(const struct ubifs_info *c, + int lnum) { return; } +static inline void +dbg_dump_znode(const struct ubifs_info *c, + const struct ubifs_znode *znode) { return; } +static inline void dbg_dump_heap(struct ubifs_info *c, + struct ubifs_lpt_heap *heap, + int cat) { return; } +static inline void dbg_dump_pnode(struct ubifs_info *c, + struct ubifs_pnode *pnode, + struct ubifs_nnode *parent, + int iip) { return; } +static inline void dbg_dump_tnc(struct ubifs_info *c) { return; } +static inline void dbg_dump_index(struct ubifs_info *c) { return; } +static inline void dbg_dump_lpt_lebs(const struct ubifs_info *c) { return; } + +static inline int dbg_walk_index(struct ubifs_info *c, + dbg_leaf_callback leaf_cb, + dbg_znode_callback znode_cb, + void *priv) { return 0; } +static inline void dbg_save_space_info(struct ubifs_info *c) { return; } +static inline int dbg_check_space_info(struct ubifs_info *c) { return 0; } +static inline int dbg_check_lprops(struct ubifs_info *c) { return 0; } +static inline int +dbg_old_index_check_init(struct ubifs_info *c, + struct ubifs_zbranch *zroot) { return 0; } +static inline int +dbg_check_old_index(struct ubifs_info *c, + struct ubifs_zbranch *zroot) { return 0; } +static inline int dbg_check_cats(struct ubifs_info *c) { return 0; } +static inline int dbg_check_ltab(struct ubifs_info *c) { return 0; } +static inline int dbg_chk_lpt_free_spc(struct ubifs_info *c) { return 0; } +static inline int dbg_chk_lpt_sz(struct ubifs_info *c, + int action, int len) { return 0; } +static inline int dbg_check_synced_i_size(struct inode *inode) { return 0; } +static inline int dbg_check_dir_size(struct ubifs_info *c, + const struct inode *dir) { return 0; } +static inline int dbg_check_tnc(struct ubifs_info *c, int extra) { return 0; } +static inline int dbg_check_idx_size(struct ubifs_info *c, + long long idx_size) { return 0; } +static inline int dbg_check_filesystem(struct ubifs_info *c) { return 0; } +static inline void dbg_check_heap(struct ubifs_info *c, + struct ubifs_lpt_heap *heap, + int cat, int add_pos) { return; } +static inline int dbg_check_lpt_nodes(struct ubifs_info *c, + struct ubifs_cnode *cnode, int row, int col) { return 0; } +static inline int dbg_check_inode_size(struct ubifs_info *c, + const struct inode *inode, + loff_t size) { return 0; } +static inline int +dbg_check_data_nodes_order(struct ubifs_info *c, + struct list_head *head) { return 0; } +static inline int +dbg_check_nondata_nodes_order(struct ubifs_info *c, + struct list_head *head) { return 0; } + +static inline int dbg_force_in_the_gaps(void) { return 0; } +#define dbg_force_in_the_gaps_enabled 0 +#define dbg_failure_mode 0 + +static inline int dbg_debugfs_init(void) { return 0; } +static inline void dbg_debugfs_exit(void) { return; } +static inline int dbg_debugfs_init_fs(struct ubifs_info *c) { return 0; } +static inline int dbg_debugfs_exit_fs(struct ubifs_info *c) { return 0; } #endif /* !CONFIG_UBIFS_FS_DEBUG */ #endif /* !__UBIFS_DEBUG_H__ */ diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index 28be1e6a65e8..b286db79c686 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -1312,6 +1312,9 @@ int ubifs_fsync(struct file *file, int datasync) dbg_gen("syncing inode %lu", inode->i_ino); + if (inode->i_sb->s_flags & MS_RDONLY) + return 0; + /* * VFS has already synchronized dirty pages for this inode. Synchronize * the inode unless this is a 'datasync()' call. diff --git a/fs/ubifs/log.c b/fs/ubifs/log.c index 4d0cb1241460..40fa780ebea7 100644 --- a/fs/ubifs/log.c +++ b/fs/ubifs/log.c @@ -175,26 +175,6 @@ void ubifs_add_bud(struct ubifs_info *c, struct ubifs_bud *bud) } /** - * ubifs_create_buds_lists - create journal head buds lists for remount rw. - * @c: UBIFS file-system description object - */ -void ubifs_create_buds_lists(struct ubifs_info *c) -{ - struct rb_node *p; - - spin_lock(&c->buds_lock); - p = rb_first(&c->buds); - while (p) { - struct ubifs_bud *bud = rb_entry(p, struct ubifs_bud, rb); - struct ubifs_jhead *jhead = &c->jheads[bud->jhead]; - - list_add_tail(&bud->list, &jhead->buds_list); - p = rb_next(p); - } - spin_unlock(&c->buds_lock); -} - -/** * ubifs_add_bud_to_log - add a new bud to the log. * @c: UBIFS file-system description object * @jhead: journal head the bud belongs to diff --git a/fs/ubifs/recovery.c b/fs/ubifs/recovery.c index 936f2cbfe6b6..3dbad6fbd1eb 100644 --- a/fs/ubifs/recovery.c +++ b/fs/ubifs/recovery.c @@ -317,6 +317,32 @@ int ubifs_recover_master_node(struct ubifs_info *c) goto out_free; } memcpy(c->rcvrd_mst_node, c->mst_node, UBIFS_MST_NODE_SZ); + + /* + * We had to recover the master node, which means there was an + * unclean reboot. However, it is possible that the master node + * is clean at this point, i.e., %UBIFS_MST_DIRTY is not set. + * E.g., consider the following chain of events: + * + * 1. UBIFS was cleanly unmounted, so the master node is clean + * 2. UBIFS is being mounted R/W and starts changing the master + * node in the first (%UBIFS_MST_LNUM). A power cut happens, + * so this LEB ends up with some amount of garbage at the + * end. + * 3. UBIFS is being mounted R/O. We reach this place and + * recover the master node from the second LEB + * (%UBIFS_MST_LNUM + 1). But we cannot update the media + * because we are being mounted R/O. We have to defer the + * operation. + * 4. However, this master node (@c->mst_node) is marked as + * clean (since the step 1). And if we just return, the + * mount code will be confused and won't recover the master + * node when it is re-mounter R/W later. + * + * Thus, to force the recovery by marking the master node as + * dirty. + */ + c->mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY); } else { /* Write the recovered master node */ c->max_sqnum = le64_to_cpu(mst->ch.sqnum) - 1; diff --git a/fs/ubifs/replay.c b/fs/ubifs/replay.c index eed0fcff8d73..d3d6d365bfc1 100644 --- a/fs/ubifs/replay.c +++ b/fs/ubifs/replay.c @@ -59,6 +59,7 @@ enum { * @new_size: truncation new size * @free: amount of free space in a bud * @dirty: amount of dirty space in a bud from padding and deletion nodes + * @jhead: journal head number of the bud * * UBIFS journal replay must compare node sequence numbers, which means it must * build a tree of node information to insert into the TNC. @@ -80,6 +81,7 @@ struct replay_entry { struct { int free; int dirty; + int jhead; }; }; }; @@ -159,6 +161,11 @@ static int set_bud_lprops(struct ubifs_info *c, struct replay_entry *r) err = PTR_ERR(lp); goto out; } + + /* Make sure the journal head points to the latest bud */ + err = ubifs_wbuf_seek_nolock(&c->jheads[r->jhead].wbuf, r->lnum, + c->leb_size - r->free, UBI_SHORTTERM); + out: ubifs_release_lprops(c); return err; @@ -627,10 +634,6 @@ static int replay_bud(struct ubifs_info *c, int lnum, int offs, int jhead, ubifs_assert(sleb->endpt - offs >= used); ubifs_assert(sleb->endpt % c->min_io_size == 0); - if (sleb->endpt + c->min_io_size <= c->leb_size && !c->ro_mount) - err = ubifs_wbuf_seek_nolock(&c->jheads[jhead].wbuf, lnum, - sleb->endpt, UBI_SHORTTERM); - *dirty = sleb->endpt - offs - used; *free = c->leb_size - sleb->endpt; @@ -653,12 +656,14 @@ out_dump: * @sqnum: sequence number * @free: amount of free space in bud * @dirty: amount of dirty space from padding and deletion nodes + * @jhead: journal head number for the bud * * This function inserts a reference node to the replay tree and returns zero * in case of success or a negative error code in case of failure. */ static int insert_ref_node(struct ubifs_info *c, int lnum, int offs, - unsigned long long sqnum, int free, int dirty) + unsigned long long sqnum, int free, int dirty, + int jhead) { struct rb_node **p = &c->replay_tree.rb_node, *parent = NULL; struct replay_entry *r; @@ -688,6 +693,7 @@ static int insert_ref_node(struct ubifs_info *c, int lnum, int offs, r->flags = REPLAY_REF; r->free = free; r->dirty = dirty; + r->jhead = jhead; rb_link_node(&r->rb, parent, p); rb_insert_color(&r->rb, &c->replay_tree); @@ -712,7 +718,7 @@ static int replay_buds(struct ubifs_info *c) if (err) return err; err = insert_ref_node(c, b->bud->lnum, b->bud->start, b->sqnum, - free, dirty); + free, dirty, b->bud->jhead); if (err) return err; } diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index c75f6133206c..04ad07f4fcc3 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -1257,12 +1257,12 @@ static int mount_ubifs(struct ubifs_info *c) goto out_free; } + err = alloc_wbufs(c); + if (err) + goto out_cbuf; + sprintf(c->bgt_name, BGT_NAME_PATTERN, c->vi.ubi_num, c->vi.vol_id); if (!c->ro_mount) { - err = alloc_wbufs(c); - if (err) - goto out_cbuf; - /* Create background thread */ c->bgt = kthread_create(ubifs_bg_thread, c, "%s", c->bgt_name); if (IS_ERR(c->bgt)) { @@ -1631,12 +1631,6 @@ static int ubifs_remount_rw(struct ubifs_info *c) if (err) goto out; - err = alloc_wbufs(c); - if (err) - goto out; - - ubifs_create_buds_lists(c); - /* Create background thread */ c->bgt = kthread_create(ubifs_bg_thread, c, "%s", c->bgt_name); if (IS_ERR(c->bgt)) { @@ -1671,14 +1665,25 @@ static int ubifs_remount_rw(struct ubifs_info *c) if (err) goto out; + dbg_gen("re-mounted read-write"); + c->remounting_rw = 0; + if (c->need_recovery) { c->need_recovery = 0; ubifs_msg("deferred recovery completed"); + } else { + /* + * Do not run the debugging space check if the were doing + * recovery, because when we saved the information we had the + * file-system in a state where the TNC and lprops has been + * modified in memory, but all the I/O operations (including a + * commit) were deferred. So the file-system was in + * "non-committed" state. Now the file-system is in committed + * state, and of course the amount of free space will change + * because, for example, the old index size was imprecise. + */ + err = dbg_check_space_info(c); } - - dbg_gen("re-mounted read-write"); - c->remounting_rw = 0; - err = dbg_check_space_info(c); mutex_unlock(&c->umount_mutex); return err; @@ -1733,7 +1738,6 @@ static void ubifs_remount_ro(struct ubifs_info *c) if (err) ubifs_ro_mode(c, err); - free_wbufs(c); vfree(c->orph_buf); c->orph_buf = NULL; kfree(c->write_reserve_buf); @@ -1761,10 +1765,12 @@ static void ubifs_put_super(struct super_block *sb) * of the media. For example, there will be dirty inodes if we failed * to write them back because of I/O errors. */ - ubifs_assert(atomic_long_read(&c->dirty_pg_cnt) == 0); - ubifs_assert(c->budg_idx_growth == 0); - ubifs_assert(c->budg_dd_growth == 0); - ubifs_assert(c->budg_data_growth == 0); + if (!c->ro_error) { + ubifs_assert(atomic_long_read(&c->dirty_pg_cnt) == 0); + ubifs_assert(c->budg_idx_growth == 0); + ubifs_assert(c->budg_dd_growth == 0); + ubifs_assert(c->budg_data_growth == 0); + } /* * The 'c->umount_lock' prevents races between UBIFS memory shrinker diff --git a/fs/xattr.c b/fs/xattr.c index a19acdb81cd1..f1ef94974dea 100644 --- a/fs/xattr.c +++ b/fs/xattr.c @@ -666,7 +666,7 @@ generic_setxattr(struct dentry *dentry, const char *name, const void *value, siz handler = xattr_resolve_name(dentry->d_sb->s_xattr, &name); if (!handler) return -EOPNOTSUPP; - return handler->set(dentry, name, value, size, 0, handler->flags); + return handler->set(dentry, name, value, size, flags, handler->flags); } /* diff --git a/fs/xfs/linux-2.6/xfs_message.c b/fs/xfs/linux-2.6/xfs_message.c index 3ca795609113..9f76cceb678d 100644 --- a/fs/xfs/linux-2.6/xfs_message.c +++ b/fs/xfs/linux-2.6/xfs_message.c @@ -34,8 +34,10 @@ __xfs_printk( const struct xfs_mount *mp, struct va_format *vaf) { - if (mp && mp->m_fsname) + if (mp && mp->m_fsname) { printk("%sXFS (%s): %pV\n", level, mp->m_fsname, vaf); + return; + } printk("%sXFS: %pV\n", level, vaf); } diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c index e4f9c1b0836c..3e898a48122d 100644 --- a/fs/xfs/linux-2.6/xfs_sync.c +++ b/fs/xfs/linux-2.6/xfs_sync.c @@ -926,6 +926,7 @@ restart: XFS_LOOKUP_BATCH, XFS_ICI_RECLAIM_TAG); if (!nr_found) { + done = 1; rcu_read_unlock(); break; } diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c index acdb92f14d51..5fc2380092c8 100644 --- a/fs/xfs/xfs_trans_ail.c +++ b/fs/xfs/xfs_trans_ail.c @@ -346,20 +346,23 @@ xfs_ail_delete( */ STATIC void xfs_ail_worker( - struct work_struct *work) + struct work_struct *work) { - struct xfs_ail *ailp = container_of(to_delayed_work(work), + struct xfs_ail *ailp = container_of(to_delayed_work(work), struct xfs_ail, xa_work); - long tout; - xfs_lsn_t target = ailp->xa_target; - xfs_lsn_t lsn; - xfs_log_item_t *lip; - int flush_log, count, stuck; - xfs_mount_t *mp = ailp->xa_mount; + xfs_mount_t *mp = ailp->xa_mount; struct xfs_ail_cursor *cur = &ailp->xa_cursors; - int push_xfsbufd = 0; + xfs_log_item_t *lip; + xfs_lsn_t lsn; + xfs_lsn_t target; + long tout = 10; + int flush_log = 0; + int stuck = 0; + int count = 0; + int push_xfsbufd = 0; spin_lock(&ailp->xa_lock); + target = ailp->xa_target; xfs_trans_ail_cursor_init(ailp, cur); lip = xfs_trans_ail_cursor_first(ailp, cur, ailp->xa_last_pushed_lsn); if (!lip || XFS_FORCED_SHUTDOWN(mp)) { @@ -368,8 +371,7 @@ xfs_ail_worker( */ xfs_trans_ail_cursor_done(ailp, cur); spin_unlock(&ailp->xa_lock); - ailp->xa_last_pushed_lsn = 0; - return; + goto out_done; } XFS_STATS_INC(xs_push_ail); @@ -386,8 +388,7 @@ xfs_ail_worker( * lots of contention on the AIL lists. */ lsn = lip->li_lsn; - flush_log = stuck = count = 0; - while ((XFS_LSN_CMP(lip->li_lsn, target) < 0)) { + while ((XFS_LSN_CMP(lip->li_lsn, target) <= 0)) { int lock_result; /* * If we can lock the item without sleeping, unlock the AIL @@ -480,21 +481,25 @@ xfs_ail_worker( } /* assume we have more work to do in a short while */ - tout = 10; +out_done: if (!count) { /* We're past our target or empty, so idle */ ailp->xa_last_pushed_lsn = 0; /* - * Check for an updated push target before clearing the - * XFS_AIL_PUSHING_BIT. If the target changed, we've got more - * work to do. Wait a bit longer before starting that work. + * We clear the XFS_AIL_PUSHING_BIT first before checking + * whether the target has changed. If the target has changed, + * this pushes the requeue race directly onto the result of the + * atomic test/set bit, so we are guaranteed that either the + * the pusher that changed the target or ourselves will requeue + * the work (but not both). */ + clear_bit(XFS_AIL_PUSHING_BIT, &ailp->xa_flags); smp_rmb(); - if (ailp->xa_target == target) { - clear_bit(XFS_AIL_PUSHING_BIT, &ailp->xa_flags); + if (XFS_LSN_CMP(ailp->xa_target, target) == 0 || + test_and_set_bit(XFS_AIL_PUSHING_BIT, &ailp->xa_flags)) return; - } + tout = 50; } else if (XFS_LSN_CMP(lsn, target) >= 0) { /* @@ -553,7 +558,7 @@ xfs_ail_push( * the XFS_AIL_PUSHING_BIT. */ smp_wmb(); - ailp->xa_target = threshold_lsn; + xfs_trans_ail_copy_lsn(ailp, &ailp->xa_target, &threshold_lsn); if (!test_and_set_bit(XFS_AIL_PUSHING_BIT, &ailp->xa_flags)) queue_delayed_work(xfs_syncd_wq, &ailp->xa_work, 0); } |