xfs: teach scrub to flag non-extents format cow forks
CoW forks only exist in memory, which means that they can only ever have
an incore extent tree. Hence they must always be FMT_EXTENTS, so check
this when we're scrubbing them.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
diff --git a/fs/xfs/scrub/bmap.c b/fs/xfs/scrub/bmap.c
index 4bb6672..d50d0ea 100644
--- a/fs/xfs/scrub/bmap.c
+++ b/fs/xfs/scrub/bmap.c
@@ -748,6 +748,8 @@ xchk_bmap(
case XFS_DINODE_FMT_DEV:
case XFS_DINODE_FMT_LOCAL:
/* No mappings to check. */
+ if (whichfork == XFS_COW_FORK)
+ xchk_fblock_set_corrupt(sc, whichfork, 0);
goto out;
case XFS_DINODE_FMT_EXTENTS:
break;
