[PATCH] selftests/mm: Restore default nr_hugepages value during cleanup in hugetlb_reparenting_test.sh

[Donet Tom]

During cleanup, the value of /proc/sys/vm/nr_hugepages is currently
being set to 0. At the end of the test, if all tests pass, the
original nr_hugepages value is restored. However, if any test fails,
it remains set to 0.

With this patch, we ensure that the original nr_hugepages value is
restored during cleanup, regardless of whether the test passes or fails.

Fixes: 29750f71a9b4 ("hugetlb_cgroup: add hugetlb_cgroup reservation tests")
Signed-off-by: Donet Tom <donet...@linux.ibm.com>
---
 tools/testing/selftests/mm/hugetlb_reparenting_test.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/mm/hugetlb_reparenting_test.sh 
b/tools/testing/selftests/mm/hugetlb_reparenting_test.sh
index 11f9bbe7dc22..114875a2b018 100755
--- a/tools/testing/selftests/mm/hugetlb_reparenting_test.sh
+++ b/tools/testing/selftests/mm/hugetlb_reparenting_test.sh
@@ -56,7 +56,7 @@ function cleanup() {
   rmdir "$CGROUP_ROOT"/a/b 2>/dev/null
   rmdir "$CGROUP_ROOT"/a 2>/dev/null
   rmdir "$CGROUP_ROOT"/test1 2>/dev/null
-  echo 0 >/proc/sys/vm/nr_hugepages
+  echo $nr_hugepgs >/proc/sys/vm/nr_hugepages
   set -e
 }
 
-- 
2.47.1