Btrfs: fix off-by-one in lseek

Lock end is inclusive. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
git-mirror · Jan 14, 2013 · 1214b53 · 1214b53
1 parent 3268a24
commit 1214b53
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
@@ -2242,6 +2242,7 @@ static int find_desired_extent(struct inode *inode, loff_t *offset, int origin)
 	if (lockend <= lockstart)
 		lockend = lockstart + root->sectorsize;
 
+	lockend--;
 	len = lockend - lockstart + 1;
 
 	len = max_t(u64, len, root->sectorsize);