{"id":2220081,"url":"http://patchwork.ozlabs.org/api/patches/2220081/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/e6ca6066c0869cf58c6fbef59ea2d35547cabc6d.1775466330.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/e6ca6066c0869cf58c6fbef59ea2d35547cabc6d.1775466330.git.sayalip@linux.ibm.com/","date":"2026-04-06T09:19:33","name":"[v4,14/15] selftests/mm: clarify alternate unmapping in compaction_test","commit_ref":null,"pull_url":null,"state":"new","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/e6ca6066c0869cf58c6fbef59ea2d35547cabc6d.1775466330.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/2220081/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2220081/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=NY/AE8em;\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-19396-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=NY/AE8em;\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 4fq3jd4CTcz1y2d\n\tfor ; Mon, 06 Apr 2026 19:21:25 +1000 (AEST)","from boromir.ozlabs.org (localhost [127.0.0.1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4fq3j41T3vz3013;\n\tMon, 06 Apr 2026 19:20:56 +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 4fq3j32ysmz2yhP\n\tfor ; Mon, 06 Apr 2026 19:20:55 +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 635MdY2g4037439;\n\tMon, 6 Apr 2026 09:20:41 GMT","from ppma23.wdc07v.mail.ibm.com\n (5d.69.3da9.ip4.static.sl-reverse.com [169.61.105.93])\n\tby mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4dat51wxka-1\n\t(version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT);\n\tMon, 06 Apr 2026 09:20:40 +0000 (GMT)","from pps.filterd (ppma23.wdc07v.mail.ibm.com [127.0.0.1])\n\tby ppma23.wdc07v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id\n 6366GArt022945;\n\tMon, 6 Apr 2026 09:20:39 GMT","from smtprelay01.fra02v.mail.ibm.com ([9.218.2.227])\n\tby ppma23.wdc07v.mail.ibm.com (PPS) with ESMTPS id 4dbefkc0xj-1\n\t(version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT);\n\tMon, 06 Apr 2026 09:20:39 +0000","from smtpav02.fra02v.mail.ibm.com (smtpav02.fra02v.mail.ibm.com\n [10.20.54.101])\n\tby smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id\n 6369KYdG38928832\n\t(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK);\n\tMon, 6 Apr 2026 09:20:35 GMT","from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1])\n\tby IMSVA (Postfix) with ESMTP id D602A20043;\n\tMon, 6 Apr 2026 09:20:34 +0000 (GMT)","from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1])\n\tby IMSVA (Postfix) with ESMTP id 54F5E20040;\n\tMon, 6 Apr 2026 09:20:31 +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 09:20:31 +0000 (GMT)"],"ARC-Seal":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1775467256;\n\tcv=none;\n b=dIYjVFZioCpDja2aoxymzCxM0SQEs4xm7cQUql3ZNcy2mwSDTgnHdtkcKBWQaosTzbDjq9D3x5SBnQb+pmjziTGWS+QCH5GjbFe6p/Uf5WhJjtuy1K3X/erfRsYZ2NgCc7JTAPgDWqA9uti5Agg+trzcBkC1VQ1b/A2yBIDIb8q3zwmmNAJtNEvnr2a8ZJGzbgdBg4Z7HtcnlS/8MHL6m8gy4Xi5AwnLoG+io5WE9vMcYMR9Iq4/o0PZVQDtrgc7C/MUX1EyIJvSUaRtr0ZAFOh0qZBjd5UZQeQva1xK0jp9HfREdGqxtR7AyD1RwJfZbqkbDedFfQpHCeE4z13V1g==","ARC-Message-Signature":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1775467256; c=relaxed/relaxed;\n\tbh=pBqdS5nVcWPMjB8CEBH752E10Mp8905KEGmdHXqnGYM=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=Tmgfe2lOIR8SIlL36UNt8QhCu+WiEzP9sx7V4WGXhrunDMrKPAdZbnyGmDAjUnn/IgvblVtXmSa7BRbyahCwEhM0NdKX9Ivyrqy75ZAEezlLbprdr42BwWOLH+WBlJnp0lwZSX3KxBmzZXmg8eA4sSa+zjcBgJjbLDB7tUW8Gu2PsUkAtXJs7pWNiv+Tze8atZZ8JKAt1tVFTq5QEdG5k7UhIa7uCCwy9qib6ArT6qIivfCwnpeOLvhW74WOY+FQbdykAcFJ61kLUgB9onSR72VfhmXcxDDV6DGXsjI3KOE0xajE4z5Caay7H4I9UHjsiYPG9DqhswvKN0YNm+jo6w==","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=NY/AE8em; 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=pBqdS5nVcWPMjB8CE\n\tBH752E10Mp8905KEGmdHXqnGYM=; b=NY/AE8emcXIDAWqeHGkVPFPvm8XooucK4\n\tV1qEeyPnF8vCnKLZqKkDv6bXPcYavYjcfiLRv3VpImxYeucHkimhQ90fwNS0tv8Q\n\tpRu8H7eq67Eabw67wy4ksdQaHIsKqqwmcLwDltxdh4TzI5XeSzo+T1n58MZtjQHK\n\toZKRqUL4SPKtHS6hCw9x7vNSoFqB4Jnbp+uHZNYM0yH/m8JcO3om9j3XvBbPorQp\n\t0pYdVlQR7KvZVzOGwOLzj0tjssDispGfqUYoJDNxq/rNi8Z/qFQ6VvTAZ6uAQ6pj\n\t6g338AkAK1htk+nqbEag8m+grhRT4/hj+cPdkp/77cYy2qXOdOR+Q==","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 14/15] selftests/mm: clarify alternate unmapping in\n compaction_test","Date":"Mon, 6 Apr 2026 14:49:33 +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-Authority-Analysis":"v=2.4 cv=J6anLQnS c=1 sm=1 tr=0 ts=69d37ae8 cx=c_pps\n a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17\n a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=iQ6ETzBq9ecOQQE5vZCe:22 a=VnNF1IyMAAAA:8 a=drp7DlKwS4wFpybDI60A:9\n a=ZXulRonScM0A:10","X-Proofpoint-GUID":"mqojUT3DmpMioyJHmt3KvQPAQkRaaDlZ","X-Proofpoint-ORIG-GUID":"19LRlPIFPDuzkGxRK8_l-LF11lGhtkKQ","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjYwNDA2MDA5MCBTYWx0ZWRfX+PdhhPBXeUrs\n qBNQXlMPWA7f+tki8SwCHi0vHgFWvjAfcpSle1z5ZP1KDPAUWDlg5SgWZ7wbFYsdU/+gWK0VcvV\n IFy1h0aOUJDUWdxWWFPr1yzctgBz4EwK/RG6NcsBvgVpz93sHj8TlR8zd4Rb3bF0jJG0SIFrt9U\n v8W2iOl0cWTVeJe6lGqk9ZUU1boNY0AuVnOGnFSCOJExDBpa/3nhQw3YiHbfwXq8YCElnM1lmlL\n S3yyxZ8B0MstX/W3MxydYGEF6+I5M1XuO0SfcNzw1qFvcRDXsoItXOXsZonVbApwQ9F8uqSa1UZ\n O+hgfGnaep5cUGVoFIDEaNOh4X+HSGOuN+yiPmkc8dIq5rW5qgvDRRnjZxbekWbQ3WYPi/CVUqC\n qRXhR62Xf6pIR9wkk2BNywoIP3rYj9FJHxcpBwNX4sDDwlMpjN4qkVr/p8KUhSCKMzNV27vecMs\n 3MY/qLyDnwO96lTT4QQ==","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 spamscore=0 lowpriorityscore=0 bulkscore=0 priorityscore=1501 clxscore=1015\n impostorscore=0 phishscore=0 malwarescore=0 suspectscore=0 adultscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2603050001 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":"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\")\nSigned-off-by: Sayali Patil \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":["v4","14/15"]}