{"id":2223028,"url":"http://patchwork.ozlabs.org/api/patches/2223028/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/15427e424f95147b856474b77d9389b657ef0f7e.1776150071.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":"<15427e424f95147b856474b77d9389b657ef0f7e.1776150071.git.sayalip@linux.ibm.com>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/15427e424f95147b856474b77d9389b657ef0f7e.1776150071.git.sayalip@linux.ibm.com/","date":"2026-04-14T08:22:08","name":"[v5,14/14] selftests/mm: clarify alternate unmapping in compaction_test","commit_ref":null,"pull_url":null,"state":"handled-elsewhere","archived":false,"hash":"97e2061fb0152a922f77076e98dab734b59304c8","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/15427e424f95147b856474b77d9389b657ef0f7e.1776150071.git.sayalip@linux.ibm.com/mbox/","series":[{"id":499800,"url":"http://patchwork.ozlabs.org/api/series/499800/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=499800","date":"2026-04-14T08:21:54","name":"selftests/mm: fix failures and robustness improvements","version":5,"mbox":"http://patchwork.ozlabs.org/series/499800/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2223028/comments/","check":"success","checks":"http://patchwork.ozlabs.org/api/patches/2223028/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n <linuxppc-dev+bounces-19740-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=eI2dEIL5;\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-19740-incoming=patchwork.ozlabs.org@lists.ozlabs.org;\n receiver=patchwork.ozlabs.org)","lists.ozlabs.org;\n arc=none smtp.remote-ip=148.163.156.1","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=eI2dEIL5;\n\tdkim-atps=neutral","lists.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=linux.ibm.com\n (client-ip=148.163.156.1; helo=mx0a-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 4fvy426Q5hz1y2d\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 14 Apr 2026 18:24:18 +1000 (AEST)","from boromir.ozlabs.org (localhost [127.0.0.1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4fvy3H3xnNz2yvN;\n\tTue, 14 Apr 2026 18:23:39 +1000 (AEST)","from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com\n [148.163.156.1])\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 4fvy3G5d94z2yvL\n\tfor <linuxppc-dev@lists.ozlabs.org>; Tue, 14 Apr 2026 18:23:38 +1000 (AEST)","from pps.filterd (m0360083.ppops.net [127.0.0.1])\n\tby mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id\n 63DLIXM62130702;\n\tTue, 14 Apr 2026 08:23:27 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 4dh89n9spy-1\n\t(version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT);\n\tTue, 14 Apr 2026 08:23:26 +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 63E3gDLB015149;\n\tTue, 14 Apr 2026 08:23:25 GMT","from smtprelay07.fra02v.mail.ibm.com ([9.218.2.229])\n\tby ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 4dg0msgru7-1\n\t(version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT);\n\tTue, 14 Apr 2026 08:23:25 +0000","from smtpav04.fra02v.mail.ibm.com (smtpav04.fra02v.mail.ibm.com\n [10.20.54.103])\n\tby smtprelay07.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id\n 63E8NMqA42008954\n\t(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK);\n\tTue, 14 Apr 2026 08:23:22 GMT","from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1])\n\tby IMSVA (Postfix) with ESMTP id 3944920040;\n\tTue, 14 Apr 2026 08:23:22 +0000 (GMT)","from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1])\n\tby IMSVA (Postfix) with ESMTP id 088EA2004E;\n\tTue, 14 Apr 2026 08:23:18 +0000 (GMT)","from li-3f69264c-2ce6-11b2-a85c-c3f414d24014.ibm.com.com (unknown\n [9.39.26.223])\n\tby smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP;\n\tTue, 14 Apr 2026 08:23:17 +0000 (GMT)"],"ARC-Seal":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1776155019;\n\tcv=none;\n b=PtD72bDwABSQje+SAmb57P6Fts1hS4ohX9ZrZMTLg5ucDW+NPNnIAPQ9qtXAIyD0ii9XsrjJ+kOLvESLDfDu6c4Ph/zZo2BDYugCqcgl2JRv8N63lV2xZR/Jr1ljIyZWTdws0gImTykzBZwYP7vop2zTreiJx+fYeJmzszqm9adqOU5ibrp2oPXZ3mvcSvnxSoFTggT/Y+H0SKU8U2nR7IQduthbiuAbWRgvw0O6wQ+AlscGlnLEJVSmFTnnm9iAWYiGGkMGWSlSbK5oeXnZW9+ACt/jgI9UP+2wVExbBdcd48UzXYd9CO9nSoiUhIStnzTWgteu5oV+vbw+gZbXEw==","ARC-Message-Signature":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1776155019; c=relaxed/relaxed;\n\tbh=NcC4IMd/M46lcIebNKowLxjbupegKYGulhXVqQiEBho=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=dufP4n+OR/umIUDkl6JCH24Kx2kcSH3lIo9fPRr7uoDo/CGf4Rwae/VrcqsD1y4H7TEZqPTSVypRHzKLh1FR32jDKEUhgMQIoc0iXejWBCUsuMqTHne7WE/f+AOD2y1m412p/I0a5laGTdd79558ilOe5rY4gLuHTvzXqbnm9lolNQQ0bFlaEJR4E7X06lbumBJ9h2ncASF5Pyy2uNl9gVVRjlGiIgbacWfj/RuaWlKBhlZs4xPT2dccSXlmP2UKsd2TgvMPxvgEUjxdvVwqKItC+PssoEelsCdw/t81OWFlZjxxPNgQdU71cFnz8CkI5tyQeDPY+WiP9+FgEdXN0g==","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=eI2dEIL5; dkim-atps=neutral;\n spf=pass (client-ip=148.163.156.1; helo=mx0a-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=NcC4IMd/M46lcIebN\n\tKowLxjbupegKYGulhXVqQiEBho=; b=eI2dEIL56Wy0EC3zsp4KgYqkPMzm/hhqh\n\tdh1JUPS1qesA0y3PzsyIrvImn+sqqke6CxDvDHz6b747KPIVoRE9SNl5hpd2vf8p\n\t+dhrxJOC843Pbv2Uad4ve6ZwEMxYm8O4ZRbSOs4Wu2QSYHu7DCE1JveuWxPsMV/t\n\t1G9PUBM6Tu3I6yxs27oh7ONTMKr5dYrs9+uqUUx5LXdj4uzEO10SWdJ62OVm8G0M\n\tElD2KII2cPBnYqAuDtTShF5YgwC3yaBOCqClIh7UifNUlkQYJXd2oFlyrRKXiNjM\n\teVNzW/uD3FO78nP79xf3kCQYY/N4fq9ZWrbpWJdgnjksxxgNiDxUA==","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 v5 14/14] selftests/mm: clarify alternate unmapping in\n compaction_test","Date":"Tue, 14 Apr 2026 13:52:08 +0530","Message-ID":"\n <15427e424f95147b856474b77d9389b657ef0f7e.1776150071.git.sayalip@linux.ibm.com>","X-Mailer":"git-send-email 2.52.0","In-Reply-To":"<cover.1776150071.git.sayalip@linux.ibm.com>","References":"<cover.1776150071.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":"T0_jg1t3gdnF1lk-h5NiGazBt5I7iygi","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjYwNDE0MDA3NyBTYWx0ZWRfX/8eiTCjkRVf/\n CDlXSF/ZHW+dMyylwuR+1pik44Rvj7wgiWN0W9/KY/FvEYaY62qX+UHtqi2i/prza03XH/cFMJS\n zG3yFDSp1XGkda7T+Kuj+Wf3XkAFmYoAE1BunLWfV9uQdKlQEshWJ75fny8wqf4cvgKDGdw1vQ3\n KxvsjAYscOgrqodOvthZrG/MJfCoeVKpY34K01TrNxd2yMTb179LjECHU0CbmNyTP8zCwgqNY1f\n IApwLrAG10h2VS5hJZ97ai0Tor8T78cLnpTv+fqYoVFKVglfIVGx5Wcx8f6MzxLjVhZwNfVNHE+\n 7ZPblCsZGIyaVy5XgIzdT27tXZE9rGnnOdwaycUm8WWcGaSC+moSDvUIGla5jkBPQwh1Lt3DdtZ\n NQOEI4FAMfYVnXhj+zgmJlC4VHlNdeW6RmHdXxZUNm0t2U6tIqtVQPxikusPav0a7R4B20aCA+J\n EUsF0s/TIEi8vppBesA==","X-Proofpoint-ORIG-GUID":"CaUNY_Bht_4C5dirHMU1MvsaTvVE0hDM","X-Authority-Analysis":"v=2.4 cv=FY4HAp+6 c=1 sm=1 tr=0 ts=69ddf97f 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=iQ6ETzBq9ecOQQE5vZCe:22 a=VnNF1IyMAAAA:8 a=THlBPJCoSQ4NST9nLWYA:9","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=2026-04-14_02,2026-04-13_04,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n adultscore=0 priorityscore=1501 bulkscore=0 impostorscore=0 spamscore=0\n lowpriorityscore=0 suspectscore=0 clxscore=1015 malwarescore=0 phishscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2604070000 definitions=main-2604140077","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":"Add a comment explaining that every other entry in the list is\nunmapped to intentionally create fragmentation with\nlocked pages before invoking check_compaction().\n\nFixes: bd67d5c15cc1 (\"Test compaction of mlocked memory\")\nTested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>\nSigned-off-by: Sayali Patil <sayalip@linux.ibm.com>\n---\n tools/testing/selftests/mm/compaction_test.c | 3 +++\n 1 file changed, 3 insertions(+)","diff":"diff --git a/tools/testing/selftests/mm/compaction_test.c b/tools/testing/selftests/mm/compaction_test.c\nindex 30209c40b697..e1610e2fbdf6 100644\n--- a/tools/testing/selftests/mm/compaction_test.c\n+++ b/tools/testing/selftests/mm/compaction_test.c\n@@ -261,6 +261,9 @@ int main(int argc, char **argv)\n \t\tmem_fragmentable_MB -= MAP_SIZE_MB;\n \t}\n \n+\t/* Unmap every other entry in the list to create fragmentation with\n+\t * locked pages before invoking check_compaction().\n+\t */\n \tfor (entry = list; entry != NULL; entry = entry->next) {\n \t\tmunmap(entry->map, MAP_SIZE);\n \t\tif (!entry->next)\n","prefixes":["v5","14/14"]}