Fix EXTENT_MAP_INLINE off by one in btrfs_drop_extents

Don't set hint_byte to EXTENT_MAP_INLINE when 'end == extent_end' or
'start == key.offset' . The inline extent will be truncated in these
cases.

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

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index bb98f52..5ceaed2 100644 (file)
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -475,8 +475,7 @@ next_slot:
                        search_start = (extent_end + mask) & ~mask;
                } else
                        search_start = extent_end;
-
-               if (end <= extent_end && start >= key.offset && found_inline) {
+               if (end < extent_end && start > key.offset && found_inline) {
                        *hint_byte = EXTENT_MAP_INLINE;
                }
                if (end < extent_end && end >= key.offset) {