{"id":2232277,"url":"http://patchwork.ozlabs.org/api/patches/2232277/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/5694336b36daa4426d9ef83a1490f122c611ffc7.1777877814.git.sayalip@linux.ibm.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"<5694336b36daa4426d9ef83a1490f122c611ffc7.1777877814.git.sayalip@linux.ibm.com>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/5694336b36daa4426d9ef83a1490f122c611ffc7.1777877814.git.sayalip@linux.ibm.com/","date":"2026-05-04T08:24:40","name":"[v6,03/14] selftests/mm: restore default nr_hugepages value via exit trap in hugetlb_reparenting_test.sh","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"9ddb3424439faf1099dc1653cfee858a67c73130","submitter":{"id":92656,"url":"http://patchwork.ozlabs.org/api/people/92656/?format=json","name":"Sayali Patil","email":"sayalip@linux.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/5694336b36daa4426d9ef83a1490f122c611ffc7.1777877814.git.sayalip@linux.ibm.com/mbox/","series":[{"id":502625,"url":"http://patchwork.ozlabs.org/api/series/502625/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=502625","date":"2026-05-04T08:24:37","name":"selftests/mm: fix failures and robustness improvements","version":6,"mbox":"http://patchwork.ozlabs.org/series/502625/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2232277/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2232277/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=nnfowVV7;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; 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This can lead to repeated\nallocation/freeing of hugepages.\n\nWith set -e, failures in cleanup (e.g., rmdir/umount) can also\ncause early exit before restoring the original value at the end.\n\nMove restoration of the original nr_hugepages value to a trap handler\nregistered for EXIT, INT, and TERM signals so it is always restored on\nall exit paths. This also avoids unnecessary allocation churn across\nrepeated cleanup/setup cycles.\n\nFixes: 585a9145886a (\"selftests/mm: restore default nr_hugepages value during cleanup in hugetlb_reparenting_test.sh\")\nAcked-by: Zi Yan \nTested-by: Venkat Rao Bagalkote \nSigned-off-by: Sayali Patil \n---\n tools/testing/selftests/mm/hugetlb_reparenting_test.sh | 4 ++--\n 1 file changed, 2 insertions(+), 2 deletions(-)","diff":"diff --git a/tools/testing/selftests/mm/hugetlb_reparenting_test.sh b/tools/testing/selftests/mm/hugetlb_reparenting_test.sh\nindex 0dd31892ff67..11f914831146 100755\n--- a/tools/testing/selftests/mm/hugetlb_reparenting_test.sh\n+++ b/tools/testing/selftests/mm/hugetlb_reparenting_test.sh\n@@ -12,6 +12,8 @@ if [[ $(id -u) -ne 0 ]]; then\n fi\n \n nr_hugepgs=$(cat /proc/sys/vm/nr_hugepages)\n+trap 'echo \"$nr_hugepgs\" > /proc/sys/vm/nr_hugepages' EXIT INT TERM\n+\n usage_file=usage_in_bytes\n \n if [[ \"$1\" == \"-cgroup-v2\" ]]; then\n@@ -56,7 +58,6 @@ function cleanup() {\n rmdir \"$CGROUP_ROOT\"/a/b 2>/dev/null\n rmdir \"$CGROUP_ROOT\"/a 2>/dev/null\n rmdir \"$CGROUP_ROOT\"/test1 2>/dev/null\n- echo $nr_hugepgs >/proc/sys/vm/nr_hugepages\n set -e\n }\n \n@@ -240,4 +241,3 @@ if [[ $do_umount ]]; then\n rm -rf $CGROUP_ROOT\n fi\n \n-echo \"$nr_hugepgs\" > /proc/sys/vm/nr_hugepages\n","prefixes":["v6","03/14"]}