linux-kernel - [PATCH v3 1/5] selftests/mm: hugetlb_reparenting

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Date: Thu, 25 Jan 2024 20:46:04 +0500
From: Muhammad Usama Anjum <usama.anjum@...labora.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
	Shuah Khan <shuah@...nel.org>
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>,
	kernel@...labora.com,
	Ryan Roberts <ryan.roberts@....com>,
	linux-mm@...ck.org,
	linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v3 1/5] selftests/mm: hugetlb_reparenting_test: do not unmount

Do not unmount the cgroup if it wasn't mounted by the test. The earlier
patch had fixed this for charge_reserved_hugetlb, but not for this test.
I'm adding fixes tag to that earlier patch.

Fixes: 209376ed2a84 ("selftests/vm: make charge_reserved_hugetlb.sh work with existing cgroup setting")
Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>
---
 tools/testing/selftests/mm/hugetlb_reparenting_test.sh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/mm/hugetlb_reparenting_test.sh b/tools/testing/selftests/mm/hugetlb_reparenting_test.sh
index 14d26075c8635..615c4d766c909 100755
--- a/tools/testing/selftests/mm/hugetlb_reparenting_test.sh
+++ b/tools/testing/selftests/mm/hugetlb_reparenting_test.sh
@@ -248,5 +248,7 @@ cleanup
 
 echo ALL PASS
 
-umount $CGROUP_ROOT
-rm -rf $CGROUP_ROOT
+if [[ $do_umount ]]; then
+  umount $CGROUP_ROOT
+  rm -rf $CGROUP_ROOT
+fi
-- 
2.42.0