diff options
| -rw-r--r-- | fs/btrfs/file.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 1a47251a9d4..51466dcd44e 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -765,9 +765,13 @@ static int prepare_pages(struct btrfs_root *root, struct file *file, if (start_pos < inode->i_size) { u64 last_pos; last_pos = (index + num_pages) << PAGE_CACHE_SHIFT; + lock_extent(&BTRFS_I(inode)->io_tree, + start_pos, last_pos - 1, GFP_NOFS); clear_extent_bits(&BTRFS_I(inode)->io_tree, start_pos, last_pos - 1, EXTENT_DIRTY | EXTENT_DELALLOC, GFP_NOFS); + unlock_extent(&BTRFS_I(inode)->io_tree, + start_pos, last_pos - 1, GFP_NOFS); } return 0; } |