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| author | Liu Bo <bo.li.liu@oracle.com> | 2013-05-01 16:23:41 +0000 |
|---|---|---|
| committer | Josef Bacik <jbacik@fusionio.com> | 2013-05-17 16:27:26 -0400 |
| commit | a52f4cd2b1a863a42c1cb268b1cddad451cdfede (patch) | |
| tree | 5b54a8cbf8537fef67adb8d5b9a5b52783bc37ee /fs | |
| parent | 60b62978bc5e903cd487de34972fb30f76c74a2e (diff) | |
| download | lwn-a52f4cd2b1a863a42c1cb268b1cddad451cdfede.tar.gz lwn-a52f4cd2b1a863a42c1cb268b1cddad451cdfede.zip | |
Btrfs: fix off-by-one in fiemap
lock_extent/unlock_extent expect an exclusive end.
Tested-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/extent_io.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index d2ac518f90e4..3e6e410002e5 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3989,7 +3989,7 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, last_for_get_extent = isize; } - lock_extent_bits(&BTRFS_I(inode)->io_tree, start, start + len, 0, + lock_extent_bits(&BTRFS_I(inode)->io_tree, start, start + len - 1, 0, &cached_state); em = get_extent_skip_holes(inode, start, last_for_get_extent, @@ -4076,7 +4076,7 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, out_free: free_extent_map(em); out: - unlock_extent_cached(&BTRFS_I(inode)->io_tree, start, start + len, + unlock_extent_cached(&BTRFS_I(inode)->io_tree, start, start + len - 1, &cached_state, GFP_NOFS); return ret; } |