[to-be-updated] selftests-mm-restore-default-nr_hugepages-value-during-cleanup-in-charge_reserved_hugetlbsh.patch removed from -mm tree

[to-be-updated] selftests-mm-restore-default-nr_hugepages-value-during-cleanup-in-charge_reserved_hugetlbsh.patch removed from -mm tree

[Andrew Morton]

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The quilt patch titled
     Subject: selftests/mm: restore default nr_hugepages value during cleanup in charge_reserved_hugetlb.sh
has been removed from the -mm tree.  Its filename was
     selftests-mm-restore-default-nr_hugepages-value-during-cleanup-in-charge_reserved_hugetlbsh.patch

This patch was dropped because an updated version will be issued

------------------------------------------------------
From: Sayali Patil <sayalip@linux.ibm.com>
Subject: selftests/mm: restore default nr_hugepages value during cleanup in charge_reserved_hugetlb.sh
Date: Tue, 10 Mar 2026 15:19:19 +0530

Patch series "selftests/mm: fix failures and robustness improvements".

Powerpc systems with a 64K base page size exposed several issues while
running mm selftests. Some tests assume specific hugetlb configurations,
use incorrect interfaces, or fail instead of skipping when the required
kernel features are not available.

This series fixes these issues and improves test robustness.


This patch (of 13):

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.

Link: https://lkml.kernel.org/r/cover.1773134177.git.sayalip@linux.ibm.com
Link: https://lkml.kernel.org/r/aef8d9c1c6fb2b80af90543be21e15030e720733.1773134177.git.sayalip@linux.ibm.com
Fixes: 7d695b1c3695 ("selftests/mm: save and restore nr_hugepages value")
Signed-off-by: Sayali Patil <sayalip@linux.ibm.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: "Michal Koutný" <mkoutny@suse.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/mm/charge_reserved_hugetlb.sh |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/testing/selftests/mm/charge_reserved_hugetlb.sh~selftests-mm-restore-default-nr_hugepages-value-during-cleanup-in-charge_reserved_hugetlbsh
+++ a/tools/testing/selftests/mm/charge_reserved_hugetlb.sh
@@ -65,7 +65,7 @@ function cleanup() {
   if [[ -e $cgroup_path/hugetlb_cgroup_test2 ]]; then
     rmdir $cgroup_path/hugetlb_cgroup_test2
   fi
-  echo 0 >/proc/sys/vm/nr_hugepages
+  echo "$nr_hugepgs" > /proc/sys/vm/nr_hugepages
   echo CLEANUP DONE
 }
 
_

Patches currently in -mm which might be from sayalip@linux.ibm.com are

a.patch
selftests-mm-fix-hugetlb-pathname-construction-in-charge_reserved_hugetlbsh.patch
selftests-mm-fix-hugetlb-pathname-construction-in-hugetlb_reparenting_testsh.patch
selftest-mm-fix-cgroup-task-placement-and-tolerance-in-hugetlb_reparenting_testsh.patch
selftests-mm-size-tmpfs-according-to-pmd-page-size-in-split_huge_page_test.patch
selftest-mm-adjust-hugepage-mremap-test-size-for-large-huge-pages.patch
selftest-mm-register-existing-mapping-with-userfaultfd-in-hugepage-mremap.patch
selftests-mm-ensure-destination-is-hugetlb-backed-in-hugepage-mremap.patch
selftests-mm-skip-uffd-wp-mremap-if-uffd-write-protect-is-unsupported.patch
selftests-mm-skip-uffd-stress-test-when-nr_pages_per_cpu-is-zero.patch
selftests-mm-fix-double-increment-in-linked-list-cleanup-in-compaction_test.patch
selftests-mm-move-hwpoison-setup-into-run_test-and-silence-modprobe-output-for-memory-failure-category.patch
selftests-cgroup-extend-test_hugetlb_memcgc-to-support-all-huge-page-sizes.patch