[PATCH v2 2/2] generic/732: don't run it on tmpfs

[Yang Erkun <yangerkun@huawei.com>]

Like what 4fd042e0465c("generic/732: don't run it on NFS") say, the same
options for tmpfs won't share the same backend. Skip it for tmpfs.

Besides, add some explanation for why we should skip tmpfs.

Signed-off-by: Yang Erkun <yangerkun@huawei.com>
---
 tests/generic/732 | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tests/generic/732 b/tests/generic/732
index d8475cda..d08028c2 100755
--- a/tests/generic/732
+++ b/tests/generic/732
@@ -21,7 +21,10 @@ _cleanup()
 	rm -r -f $tmp.*
 }
 
-_supported_fs ^nfs ^overlay
+# This case give a assumption that the same mount options for
+# different mount point will share the same superblock, which won't
+# sucess for the follow fs.
+_supported_fs ^nfs ^overlay ^tmpfs
 
 _require_test
 _require_scratch
-- 
2.39.2