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GET /api/patches/2220073/?format=api
{ "id": 2220073, "url": "http://patchwork.ozlabs.org/api/patches/2220073/?format=api", "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=api", "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": "<e148e4232d4b802795751a7766fcce8884c6e3c7.1775466329.git.sayalip@linux.ibm.com>", "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=api", "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=api", "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 <linuxppc-dev+bounces-19388-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "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; 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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 <sayalip@linux.ibm.com>", "To": "Andrew Morton <akpm@linux-foundation.org>, Shuah Khan <shuah@kernel.org>,\n linux-mm@kvack.org, linux-kernel@vger.kernel.org,\n linux-kselftest@vger.kernel.org,\n Ritesh Harjani <ritesh.list@gmail.com>", "Cc": "David Hildenbrand <david@kernel.org>, Zi Yan <ziy@nvidia.com>,\n Michal Hocko <mhocko@kernel.org>, Oscar Salvador <osalvador@suse.de>,\n Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,\n Dev Jain <dev.jain@arm.com>, Liam.Howlett@oracle.com,\n linuxppc-dev@lists.ozlabs.org, Miaohe Lin <linmiaohe@huawei.com>,\n Venkat Rao Bagalkote <venkat88@linux.ibm.com>,\n Sayali Patil <sayalip@linux.ibm.com>", "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 <e148e4232d4b802795751a7766fcce8884c6e3c7.1775466329.git.sayalip@linux.ibm.com>", "X-Mailer": "git-send-email 2.52.0", "In-Reply-To": "<cover.1775466329.git.sayalip@linux.ibm.com>", "References": "<cover.1775466329.git.sayalip@linux.ibm.com>", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "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 <sayalip@linux.ibm.com>\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" ] }