Btrfs: Fix off by one error in dirty_and_release_pages

Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index ca7e5d4474e0f7f0c498e8038d10e9a9767af092..26826a543355e73ba081c9bd7302eaa2ae5a51d7 100644 (file)
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -236,7 +236,7 @@ static int dirty_and_release_pages(struct btrfs_trans_handle *trans,
                                           end_pos - start_pos, p, 0);
                BUG_ON(err);
                em->start = start_pos;
-               em->end = end_pos;
+               em->end = end_pos - 1;
                em->block_start = EXTENT_MAP_INLINE;
                em->block_end = EXTENT_MAP_INLINE;
                add_extent_mapping(em_tree, em);