diff options
Diffstat (limited to 'fs/ext4/inline.c')
| -rw-r--r-- | fs/ext4/inline.c | 56 |
1 files changed, 17 insertions, 39 deletions
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index 859bc4e2c9b0..a4b7e4bc32d4 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -34,6 +34,7 @@ static int get_max_inline_xattr_value_size(struct inode *inode, struct ext4_xattr_ibody_header *header; struct ext4_xattr_entry *entry; struct ext4_inode *raw_inode; + void *end; int free, min_offs; if (!EXT4_INODE_HAS_XATTR_SPACE(inode)) @@ -57,14 +58,23 @@ static int get_max_inline_xattr_value_size(struct inode *inode, raw_inode = ext4_raw_inode(iloc); header = IHDR(inode, raw_inode); entry = IFIRST(header); + end = (void *)raw_inode + EXT4_SB(inode->i_sb)->s_inode_size; /* Compute min_offs. */ - for (; !IS_LAST_ENTRY(entry); entry = EXT4_XATTR_NEXT(entry)) { + while (!IS_LAST_ENTRY(entry)) { + void *next = EXT4_XATTR_NEXT(entry); + + if (next >= end) { + EXT4_ERROR_INODE(inode, + "corrupt xattr in inline inode"); + return 0; + } if (!entry->e_value_inum && entry->e_value_size) { size_t offs = le16_to_cpu(entry->e_value_offs); if (offs < min_offs) min_offs = offs; } + entry = next; } free = min_offs - ((void *)entry - (void *)IFIRST(header)) - sizeof(__u32); @@ -350,7 +360,7 @@ static int ext4_update_inline_data(handle_t *handle, struct inode *inode, error = ext4_xattr_ibody_get(inode, i.name_index, i.name, value, len); - if (error == -ENODATA) + if (error < 0) goto out; BUFFER_TRACE(is.iloc.bh, "get_write_access"); @@ -731,9 +741,8 @@ convert: } int ext4_write_inline_data_end(struct inode *inode, loff_t pos, unsigned len, - unsigned copied, struct page *page) + unsigned copied, struct folio *folio) { - struct folio *folio = page_folio(page); handle_t *handle = ext4_journal_current_handle(); int no_expand; void *kaddr; @@ -813,30 +822,6 @@ out: return ret ? ret : copied; } -struct buffer_head * -ext4_journalled_write_inline_data(struct inode *inode, - unsigned len, - struct page *page) -{ - int ret, no_expand; - void *kaddr; - struct ext4_iloc iloc; - - ret = ext4_get_inode_loc(inode, &iloc); - if (ret) { - ext4_std_error(inode->i_sb, ret); - return NULL; - } - - ext4_write_lock_xattr(inode, &no_expand); - kaddr = kmap_atomic(page); - ext4_write_inline_data(inode, &iloc, kaddr, 0, len); - kunmap_atomic(kaddr); - ext4_write_unlock_xattr(inode, &no_expand); - - return iloc.bh; -} - /* * Try to make the page cache and handle ready for the inline data case. * We can call this function in 2 cases: @@ -1175,6 +1160,7 @@ static int ext4_finish_convert_inline_dir(handle_t *handle, ext4_initialize_dirent_tail(dir_block, inode->i_sb->s_blocksize); set_buffer_uptodate(dir_block); + unlock_buffer(dir_block); err = ext4_handle_dirty_dirblock(handle, inode, dir_block); if (err) return err; @@ -1249,6 +1235,7 @@ static int ext4_convert_inline_data_nolock(handle_t *handle, if (!S_ISDIR(inode->i_mode)) { memcpy(data_bh->b_data, buf, inline_size); set_buffer_uptodate(data_bh); + unlock_buffer(data_bh); error = ext4_handle_dirty_metadata(handle, inode, data_bh); } else { @@ -1256,7 +1243,6 @@ static int ext4_convert_inline_data_nolock(handle_t *handle, buf, inline_size); } - unlock_buffer(data_bh); out_restore: if (error) ext4_restore_inline_data(handle, inode, iloc, buf, inline_size); @@ -1953,16 +1939,8 @@ int ext4_inline_data_truncate(struct inode *inode, int *has_inline) * the extent status cache must be cleared to avoid leaving * behind stale delayed allocated extent entries */ - if (!ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)) { -retry: - err = ext4_es_remove_extent(inode, 0, EXT_MAX_BLOCKS); - if (err == -ENOMEM) { - memalloc_retry_wait(GFP_ATOMIC); - goto retry; - } - if (err) - goto out_error; - } + if (!ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)) + ext4_es_remove_extent(inode, 0, EXT_MAX_BLOCKS); /* Clear the content in the xattr space. */ if (inline_size > EXT4_MIN_INLINE_DATA_SIZE) { |