diff options
Diffstat (limited to 'fs/reiserfs/inode.c')
-rw-r--r-- | fs/reiserfs/inode.c | 73 |
1 files changed, 49 insertions, 24 deletions
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index a14d6cd9eeda..853f4f6fe920 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -489,10 +489,14 @@ static int reiserfs_get_blocks_direct_io(struct inode *inode, disappeared */ if (REISERFS_I(inode)->i_flags & i_pack_on_close_mask) { int err; - lock_kernel(); + + reiserfs_write_lock(inode->i_sb); + err = reiserfs_commit_for_inode(inode); REISERFS_I(inode)->i_flags &= ~i_pack_on_close_mask; - unlock_kernel(); + + reiserfs_write_unlock(inode->i_sb); + if (err < 0) ret = err; } @@ -601,6 +605,7 @@ int reiserfs_get_block(struct inode *inode, sector_t block, __le32 *item; int done; int fs_gen; + int lock_depth; struct reiserfs_transaction_handle *th = NULL; /* space reserved in transaction batch: . 3 balancings in direct->indirect conversion @@ -616,12 +621,11 @@ int reiserfs_get_block(struct inode *inode, sector_t block, loff_t new_offset = (((loff_t) block) << inode->i_sb->s_blocksize_bits) + 1; - /* bad.... */ - reiserfs_write_lock(inode->i_sb); + lock_depth = reiserfs_write_lock_once(inode->i_sb); version = get_inode_item_key_version(inode); if (!file_capable(inode, block)) { - reiserfs_write_unlock(inode->i_sb); + reiserfs_write_unlock_once(inode->i_sb, lock_depth); return -EFBIG; } @@ -633,7 +637,7 @@ int reiserfs_get_block(struct inode *inode, sector_t block, /* find number of block-th logical block of the file */ ret = _get_block_create_0(inode, block, bh_result, create | GET_BLOCK_READ_DIRECT); - reiserfs_write_unlock(inode->i_sb); + reiserfs_write_unlock_once(inode->i_sb, lock_depth); return ret; } /* @@ -751,7 +755,7 @@ int reiserfs_get_block(struct inode *inode, sector_t block, if (!dangle && th) retval = reiserfs_end_persistent_transaction(th); - reiserfs_write_unlock(inode->i_sb); + reiserfs_write_unlock_once(inode->i_sb, lock_depth); /* the item was found, so new blocks were not added to the file ** there is no need to make sure the inode is updated with this @@ -997,10 +1001,16 @@ int reiserfs_get_block(struct inode *inode, sector_t block, if (retval) goto failure; } - /* inserting indirect pointers for a hole can take a - ** long time. reschedule if needed + /* + * inserting indirect pointers for a hole can take a + * long time. reschedule if needed and also release the write + * lock for others. */ - cond_resched(); + if (need_resched()) { + reiserfs_write_unlock_once(inode->i_sb, lock_depth); + schedule(); + lock_depth = reiserfs_write_lock_once(inode->i_sb); + } retval = search_for_position_by_key(inode->i_sb, &key, &path); if (retval == IO_ERROR) { @@ -1035,7 +1045,7 @@ int reiserfs_get_block(struct inode *inode, sector_t block, retval = err; } - reiserfs_write_unlock(inode->i_sb); + reiserfs_write_unlock_once(inode->i_sb, lock_depth); reiserfs_check_path(&path); return retval; } @@ -2072,8 +2082,9 @@ int reiserfs_truncate_file(struct inode *inode, int update_timestamps) int error; struct buffer_head *bh = NULL; int err2; + int lock_depth; - reiserfs_write_lock(inode->i_sb); + lock_depth = reiserfs_write_lock_once(inode->i_sb); if (inode->i_size > 0) { error = grab_tail_page(inode, &page, &bh); @@ -2142,14 +2153,17 @@ int reiserfs_truncate_file(struct inode *inode, int update_timestamps) page_cache_release(page); } - reiserfs_write_unlock(inode->i_sb); + reiserfs_write_unlock_once(inode->i_sb, lock_depth); + return 0; out: if (page) { unlock_page(page); page_cache_release(page); } - reiserfs_write_unlock(inode->i_sb); + + reiserfs_write_unlock_once(inode->i_sb, lock_depth); + return error; } @@ -2608,7 +2622,10 @@ int reiserfs_prepare_write(struct file *f, struct page *page, int ret; int old_ref = 0; + reiserfs_write_unlock(inode->i_sb); reiserfs_wait_on_write_block(inode->i_sb); + reiserfs_write_lock(inode->i_sb); + fix_tail_page_for_writing(page); if (reiserfs_transaction_running(inode->i_sb)) { struct reiserfs_transaction_handle *th; @@ -2664,6 +2681,8 @@ static int reiserfs_write_end(struct file *file, struct address_space *mapping, int update_sd = 0; struct reiserfs_transaction_handle *th; unsigned start; + int lock_depth = 0; + bool locked = false; if ((unsigned long)fsdata & AOP_FLAG_CONT_EXPAND) pos ++; @@ -2690,9 +2709,11 @@ static int reiserfs_write_end(struct file *file, struct address_space *mapping, ** to do the i_size updates here. */ pos += copied; + if (pos > inode->i_size) { struct reiserfs_transaction_handle myth; - reiserfs_write_lock(inode->i_sb); + lock_depth = reiserfs_write_lock_once(inode->i_sb); + locked = true; /* If the file have grown beyond the border where it can have a tail, unmark it as needing a tail packing */ @@ -2703,10 +2724,9 @@ static int reiserfs_write_end(struct file *file, struct address_space *mapping, REISERFS_I(inode)->i_flags &= ~i_pack_on_close_mask; ret = journal_begin(&myth, inode->i_sb, 1); - if (ret) { - reiserfs_write_unlock(inode->i_sb); + if (ret) goto journal_error; - } + reiserfs_update_inode_transaction(inode); inode->i_size = pos; /* @@ -2718,34 +2738,36 @@ static int reiserfs_write_end(struct file *file, struct address_space *mapping, reiserfs_update_sd(&myth, inode); update_sd = 1; ret = journal_end(&myth, inode->i_sb, 1); - reiserfs_write_unlock(inode->i_sb); if (ret) goto journal_error; } if (th) { - reiserfs_write_lock(inode->i_sb); + if (!locked) { + lock_depth = reiserfs_write_lock_once(inode->i_sb); + locked = true; + } if (!update_sd) mark_inode_dirty(inode); ret = reiserfs_end_persistent_transaction(th); - reiserfs_write_unlock(inode->i_sb); if (ret) goto out; } out: + if (locked) + reiserfs_write_unlock_once(inode->i_sb, lock_depth); unlock_page(page); page_cache_release(page); return ret == 0 ? copied : ret; journal_error: + reiserfs_write_unlock_once(inode->i_sb, lock_depth); + locked = false; if (th) { - reiserfs_write_lock(inode->i_sb); if (!update_sd) reiserfs_update_sd(th, inode); ret = reiserfs_end_persistent_transaction(th); - reiserfs_write_unlock(inode->i_sb); } - goto out; } @@ -2758,7 +2780,10 @@ int reiserfs_commit_write(struct file *f, struct page *page, int update_sd = 0; struct reiserfs_transaction_handle *th = NULL; + reiserfs_write_unlock(inode->i_sb); reiserfs_wait_on_write_block(inode->i_sb); + reiserfs_write_lock(inode->i_sb); + if (reiserfs_transaction_running(inode->i_sb)) { th = current->journal_info; } |