{"id":2220073,"url":"http://patchwork.ozlabs.org/api/patches/2220073/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/e148e4232d4b802795751a7766fcce8884c6e3c7.1775466329.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":"","list_archive_url":"https://lore.kernel.org/linuxppc-dev/e148e4232d4b802795751a7766fcce8884c6e3c7.1775466329.git.sayalip@linux.ibm.com/","date":"2026-04-06T09:19:22","name":"[v4,03/15] 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":"7b69401b11c239d4997b83634e04b462bfb417c4","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/e148e4232d4b802795751a7766fcce8884c6e3c7.1775466329.git.sayalip@linux.ibm.com/mbox/","series":[{"id":498833,"url":"http://patchwork.ozlabs.org/api/series/498833/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=498833","date":"2026-04-06T09:19:22","name":"selftests/mm: fix failures and robustness improvements","version":4,"mbox":"http://patchwork.ozlabs.org/series/498833/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2220073/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2220073/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=gjg7yGsB;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; helo=lists.ozlabs.org;\n envelope-from=linuxppc-dev+bounces-19388-incoming=patchwork.ozlabs.org@lists.ozlabs.org;\n receiver=patchwork.ozlabs.org)","lists.ozlabs.org;\n arc=none smtp.remote-ip=148.163.158.5","lists.ozlabs.org;\n dmarc=pass (p=none dis=none) header.from=linux.ibm.com","lists.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=gjg7yGsB;\n\tdkim-atps=neutral","lists.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=linux.ibm.com\n (client-ip=148.163.158.5; helo=mx0b-001b2d01.pphosted.com;\n envelope-from=sayalip@linux.ibm.com; receiver=lists.ozlabs.org)"],"Received":["from lists.ozlabs.org (lists.ozlabs.org\n [IPv6:2404:9400:21b9:f100::1])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fq3hd4Nqzz1y2d\n\tfor ; Mon, 06 Apr 2026 19:20:33 +1000 (AEST)","from boromir.ozlabs.org (localhost [127.0.0.1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4fq3hc63lVz2yfl;\n\tMon, 06 Apr 2026 19:20:32 +1000 (AEST)","from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com\n [148.163.158.5])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n\t(No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 4fq3hb5X6bz2ySV\n\tfor ; Mon, 06 Apr 2026 19:20:31 +1000 (AEST)","from pps.filterd (m0360072.ppops.net [127.0.0.1])\n\tby mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id\n 635NsWYM3879301;\n\tMon, 6 Apr 2026 09:20:00 GMT","from ppma12.dal12v.mail.ibm.com\n (dc.9e.1632.ip4.static.sl-reverse.com [50.22.158.220])\n\tby mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4dat9rdems-1\n\t(version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT);\n\tMon, 06 Apr 2026 09:19:59 +0000 (GMT)","from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1])\n\tby ppma12.dal12v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id\n 63646psp018571;\n\tMon, 6 Apr 2026 09:19:58 GMT","from smtprelay05.fra02v.mail.ibm.com ([9.218.2.225])\n\tby ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 4dbcysv7b0-1\n\t(version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT);\n\tMon, 06 Apr 2026 09:19:58 +0000","from smtpav02.fra02v.mail.ibm.com (smtpav02.fra02v.mail.ibm.com\n [10.20.54.101])\n\tby smtprelay05.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id\n 6369JsKr42729738\n\t(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK);\n\tMon, 6 Apr 2026 09:19:54 GMT","from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1])\n\tby IMSVA (Postfix) with ESMTP id 447AA20043;\n\tMon, 6 Apr 2026 09:19:54 +0000 (GMT)","from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1])\n\tby IMSVA (Postfix) with ESMTP id 7762B20040;\n\tMon, 6 Apr 2026 09:19:50 +0000 (GMT)","from li-3f69264c-2ce6-11b2-a85c-c3f414d24014.bl1-in.ibm.com (unknown\n [9.123.3.209])\n\tby smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP;\n\tMon, 6 Apr 2026 09:19:50 +0000 (GMT)"],"ARC-Seal":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1775467232;\n\tcv=none;\n b=Z7te6DcUZ7oDiRjESKpLftV3YY5NJ7obaFhm6kxzQFCK4YSRt4H5PshVvQkfEcTlCFvnSf4FNVW3fPt/lKKErhXP5vEVFE5MD69tPu7Ew5Ul3NgYBzHUh7HZmotyJ+bPhj//SR1kHdrL6Y9Ix29AlAhbt4iWEdjIWt5MxhcaJPnb3g8eMXmXti9+mIv67E74m1ix+4dH877ryH58Ozj0Ybh/xqJZjt0xiIh1kVQz16Rqbc7dH+AWk19hOyqnh02hm45CiVcK4DfcI4ic2jWjQrw7MmrbDl8uFdX3YMsNBWlkXM9e3//ZBKLPSC3OZGBLPuqN7yfrkWIOxq3+Ofe3ng==","ARC-Message-Signature":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1775467232; c=relaxed/relaxed;\n\tbh=BE2EUKU/McYWqo37ghWd6Kx9zwh5R4g+dFW5eL2I394=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=OH5JperDHo7aNnpbKh1tEWgphmjnhvD2FgjE2tBiaBqHcmRnG6rh+X/lUb2fe4jl7WO9thVupwfdhWLZMD3DEYmRWc7AOCj2sYJsMagvyNPcuG6Kw7S3RLAOHryQ7sWtpxFJ1vkQMJIl80BVKZzyL34W1MWb5cjTqJUEllb8CfsHX4D8VRbLMKRQKdwfVt7naC+/WYjvuy8LCb5EcfBm91ca7Aa40/yeU7BxQtqjtOHYU9/NxX3B01+ulbD1gCKsoYkUXPaUPDbZHnTseeFOPPCe7M3+EcMAcF0rknh0hRK4sgm0K9fZYYMdWLXklE37JedKsxban2kflBL305J/ig==","ARC-Authentication-Results":"i=1; lists.ozlabs.org;\n dmarc=pass (p=none dis=none) header.from=linux.ibm.com;\n dkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=gjg7yGsB; dkim-atps=neutral;\n spf=pass (client-ip=148.163.158.5; helo=mx0b-001b2d01.pphosted.com;\n envelope-from=sayalip@linux.ibm.com;\n receiver=lists.ozlabs.org) smtp.mailfrom=linux.ibm.com","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc\n\t:content-transfer-encoding:date:from:in-reply-to:message-id\n\t:mime-version:references:subject:to; s=pp1; bh=BE2EUKU/McYWqo37g\n\thWd6Kx9zwh5R4g+dFW5eL2I394=; b=gjg7yGsBRkoF7CHo65fX+pLrIWM+OOSgy\n\tzqlDQhYqlezV2pGIRoepQHzM43iQWNXysqWSXzK6l4JEHdeeq7QshpAiN3DUkigh\n\tDNhXnSuBfsJICk58vGs5LswJEmg6KjSOGiSSw9zUYOR6zIrd6Yb1XGhF6PTnBCv/\n\t8VLR3BBne7RDQp9jIz1B8MX2OuIn8fTVUQcvaE5jJmZLlQcIVQULBei69Uc0odHZ\n\tVmBtiR6S/lJngJz909fbkUTg01cDfqzNyckGO6fkezmBVdAJy/VYURxgSn2i70ma\n\tNMMkoO86qIy5Sj//A2XrXX8ZGkDFG565A8nYZ7/OsKvuCfVqVZdxg==","From":"Sayali Patil ","To":"Andrew Morton , Shuah Khan ,\n linux-mm@kvack.org, linux-kernel@vger.kernel.org,\n linux-kselftest@vger.kernel.org,\n Ritesh Harjani ","Cc":"David Hildenbrand , Zi Yan ,\n Michal Hocko , Oscar Salvador ,\n Lorenzo Stoakes ,\n Dev Jain , Liam.Howlett@oracle.com,\n linuxppc-dev@lists.ozlabs.org, Miaohe Lin ,\n Venkat Rao Bagalkote ,\n Sayali Patil ","Subject":"[PATCH v4 03/15] selftests/mm: restore default nr_hugepages value via\n EXIT trap in hugetlb_reparenting_test.sh","Date":"Mon, 6 Apr 2026 14:49:22 +0530","Message-ID":"\n ","X-Mailer":"git-send-email 2.52.0","In-Reply-To":"","References":"","X-Mailing-List":"linuxppc-dev@lists.ozlabs.org","List-Id":"","List-Help":"","List-Owner":"","List-Post":"","List-Archive":",\n ","List-Subscribe":",\n ,\n ","List-Unsubscribe":"","Precedence":"list","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-TM-AS-GCONF":"00","X-Proofpoint-Reinject":"loops=2 maxloops=12","X-Proofpoint-GUID":"W7LetLeRBK4_w-4UpW93fUvAyuxjOU07","X-Proofpoint-ORIG-GUID":"G6LyCCgjL_tmGz3AUnWmYTvfJ_jmTIYE","X-Authority-Analysis":"v=2.4 cv=bLYb4f+Z c=1 sm=1 tr=0 ts=69d37abf cx=c_pps\n a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17\n a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=RzCfie-kr_QcCd8fBx8p:22 a=VnNF1IyMAAAA:8 a=dU9eaedoi-733nYHt2kA:9","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjYwNDA2MDA5MCBTYWx0ZWRfX41v18ENz44Zy\n r2Qcb5Z0AFbmVskgq/xuF2WLv8FzVjzo/Dvz6OSGz4RHEbYvZdgZPmIfnGSaOUi38C7/0ib0bsl\n bXwYTHdAaBxhwM9aOXnAEMKo//dOnm8AkVYynRa2Dg1vYFHa9ttw0IHprVYEvHkHex/3oJpm+la\n 1/GcOS3fCt/DExCJlCPxKAJb1lVi6UL6vdQN6MBvlvy1zmhQ15gHTg52tgmDfvLgEUp8plCADgG\n 212iGeaOWIyKSpCPTuN/F3m/76OyCYv7GDcPlvqv67tv7CRAVQsaJei9eK0ytLkJnr7ee5XYkw4\n KSqW2XyUdRSvSle6yTziS+/rfJ7TP8XwNuQ1+8EK9vkEXxdWHHjg3RwkqnaQWHIBk05IL16jRVF\n 5SgWdUf1fpGsBM7pR5eoBM6l46QslyoTiS2cegLSEI3dusjc/C/U6nehmmX2V0QzIfYk92aOJbX\n TLSkaT3fxMiJO4JLiSQ==","X-Proofpoint-Virus-Version":"vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-04-06_02,2026-04-03_01,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n clxscore=1015 adultscore=0 suspectscore=0 phishscore=0 bulkscore=0\n spamscore=0 priorityscore=1501 lowpriorityscore=0 malwarescore=0\n impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc=\n route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001\n definitions=main-2604060090","X-Spam-Status":"No, score=-0.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tRCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,\n\tSPF_PASS autolearn=disabled version=4.0.1 OzLabs 8","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"},"content":"The test modifies nr_hugepages during execution and restores it from\ncleanup() and again reconfigure it setup, which is invoked multiple\ntimes across test flow. 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 to a single EXIT trap so the original value is\nrestored reliably on all exit paths while avoiding repeated churn.\n\nFixes: 585a9145886a (\"selftests/mm: restore default nr_hugepages value during cleanup in hugetlb_reparenting_test.sh\")\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..7ddb370e1572 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\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":["v4","03/15"]}