When we runs overlay/005 on a system without xfs module, it always
fails as "unknown filesystem type xfs", due to this case require xfs
to be the underlying fs explicitly:

  $MKFS_XFS_PROG -f -n ftype=1 $upper_loop_dev >>$seqres.full 2>&1

So notrun this case if the underlying fs isn't 'xfs'.

Reported-by: Philip Daly <pdaly@redhat.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>
---
 tests/overlay/005 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/overlay/005 b/tests/overlay/005
index 4c11d5e1b..d396b5cb2 100755
--- a/tests/overlay/005
+++ b/tests/overlay/005
@@ -31,6 +31,7 @@ _cleanup()
 # them explicity after test.
 _require_scratch_nocheck
 _require_loop
+[ "$OVL_BASE_FSTYP" = "xfs" ] || _notrun "The underlying fs should be xfs"
 
 # Remove all files from previous tests
 _scratch_mkfs
-- 
2.49.0