From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id CB786C8303C for ; Fri, 11 Jul 2025 11:38:55 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 469656B00A3; Fri, 11 Jul 2025 07:38:52 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 41A0F6B00A5; Fri, 11 Jul 2025 07:38:52 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2BD186B00A6; Fri, 11 Jul 2025 07:38:52 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 145456B00A3 for ; Fri, 11 Jul 2025 07:38:52 -0400 (EDT) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id AD22316089D for ; Fri, 11 Jul 2025 11:38:51 +0000 (UTC) X-FDA: 83651786862.14.615F448 Received: from mx0a-00069f02.pphosted.com (mx0a-00069f02.pphosted.com [205.220.165.32]) by imf25.hostedemail.com (Postfix) with ESMTP id 2B9E3A0009 for ; Fri, 11 Jul 2025 11:38:47 +0000 (UTC) Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2025-04-25 header.b=PFHXvn6v; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=uWfW8UyQ; dmarc=pass (policy=reject) header.from=oracle.com; arc=pass ("microsoft.com:s=arcselector10001:i=1"); spf=pass (imf25.hostedemail.com: domain of lorenzo.stoakes@oracle.com designates 205.220.165.32 as permitted sender) smtp.mailfrom=lorenzo.stoakes@oracle.com ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1752233928; a=rsa-sha256; cv=pass; b=wUSh8gF0Rg0MKM599wTUgR6JR0bZabPizgKyWPl+MGliB8CYazbrXOrMOCcKglsa/m4Fao FVcVqVgDHqJj7zKDDCAL2n9UvKlQgB5AFDXAVXwqoPKZkSMJ0rrpPJB3oRnbv2iQgOPreC dV+gwoKvQ4S9JPLrotKm850xSzuq3kE= ARC-Authentication-Results: i=2; imf25.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2025-04-25 header.b=PFHXvn6v; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=uWfW8UyQ; dmarc=pass (policy=reject) header.from=oracle.com; arc=pass ("microsoft.com:s=arcselector10001:i=1"); spf=pass (imf25.hostedemail.com: domain of lorenzo.stoakes@oracle.com designates 205.220.165.32 as permitted sender) smtp.mailfrom=lorenzo.stoakes@oracle.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1752233928; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=BNm3SwULJNMyf7RE+WPGHmXkhEbzBnzDprncZ6EzcYk=; b=PoQWpZ3Vpg60n5HGBFM4tk+GA0V5D1FW3aw/gUO9iX1R0F2tvE5KCRko+W0ahP4uF8M52v nwAkFk2UG707G0PRTSORSC+ug84pmpGEgDx+GJJ1SMR6VZn0WmJMg+45L/6A/s8dfDsw5F xFfUEbQZe94P6BTFm+TORwuZcKpBpKM= Received: from pps.filterd (m0246617.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 56BBbbXa014552; Fri, 11 Jul 2025 11:38:42 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s= corp-2025-04-25; bh=BNm3SwULJNMyf7RE+WPGHmXkhEbzBnzDprncZ6EzcYk=; b= PFHXvn6v7HOzC17uDOUPKvDO1q7L7KZm8ZgRg3wTeu0boYQfugT6QyPlMNRsuFYA yxQ0rG2tJ4Tbt4PgKVjVTS8PzMoUF+HLDI7F94ksXx5KelXWga9ZLshOPdyTJ+va j5ccIeSM19S+WkIdJNFBzgVucxiCwhJiGRBkjCSM3KkiDmpLrwkLQSnns+yYfH9i kSUEwy0ULQblxQC3OXfNLXbKRHpAuJnnioaUNt5FQKisNyuW38ezpaC4wMBkxwWv mdoQY4r1Yx3Q4gb5GSLJDEoFiFt42m3mv2byEqAza8wEPKbb6ywRDG4Foow211vB 99GXOX7ruj+6jm4oGO2Zwg== Received: from phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta02.appoci.oracle.com [147.154.114.232]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 47u1w1g01y-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 11 Jul 2025 11:38:42 +0000 (GMT) Received: from pps.filterd (phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 56BB5CNR021609; Fri, 11 Jul 2025 11:38:41 GMT Received: from nam10-dm6-obe.outbound.protection.outlook.com (mail-dm6nam10on2045.outbound.protection.outlook.com [40.107.93.45]) by phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 47ptgde6hw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 11 Jul 2025 11:38:41 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=k/bXGSGz3hQDmT6ovdOKHiDQ83Xb4Lbt+EZ6e1e9fuu6vUQuj40S7gnLqV+7phuiEh2h8+F9YkbV2PgantsrfE8B85xE4ufazkTGWFZiBkxHt28BZtx5MXE6Z6N2wSC7bATCKIYQnHGPANW1dTgjPgQN9dEvwn7Olua/VMpFroINftfjvhDEElDBSZkiP9EzmXkApskwXF7gKJSNYsM/Zpugm1OSqHcrIKcKHd7Q+YB4ENC/C6Ow4wN5/27mLRKXYAZ/mWP0EdMElGnoY2p2mLJOXhN4Ast52mpb1lh48ZKv8CRyRav1nzkhs7oRzmXmdL7jhVnDi1sXnwVxVGjV0g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=BNm3SwULJNMyf7RE+WPGHmXkhEbzBnzDprncZ6EzcYk=; b=njHjHLaJe1uqTHC5CVpsaSc9cAp3ABcegdChII09n9rFATnaV7Osn/+j0jMpVORzgDeqg8dMiRmfA2SqF1aEbSabY3NPnt+dLMVw2t66Fob+Y6IloydFPCQmOT5QpfrXE2kaJBrlT05xZv9N7LgyyGO30pUwWp2YvT7hwsfzWOlah1dHaIlriKpjkGa8Y1EilB2ubuKmlGRcMEHS1BCp5Z+P16aOXHFeRSnaTDd6UV5+XaAQDQbHho71nWCZHRUiny20GAS5qcbsItfPJ8dIUGtYyfldCvCWNX0s/Lkud4TiOScXMTnpK7Sk7vlZ8nkmQWTBQgVWGEToRZ8apM02pA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=BNm3SwULJNMyf7RE+WPGHmXkhEbzBnzDprncZ6EzcYk=; b=uWfW8UyQXTHs/13YJnN7/8RVlCaJ65Ito372EXQEJNTjTV4gp0NhzCQNsSQE1OndV+h6om6w9MWlFXuSnDuyVfskoYLIGGscQ9/FGzNb2Dv5LF3mlK5wRl02HO8R33K/hiFuP/euV8ZSsVAK0po+lnaDBsRVjHeLB802C0Jogks= Received: from BL4PR10MB8229.namprd10.prod.outlook.com (2603:10b6:208:4e6::14) by IA1PR10MB7285.namprd10.prod.outlook.com (2603:10b6:208:3fe::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8901.27; Fri, 11 Jul 2025 11:38:39 +0000 Received: from BL4PR10MB8229.namprd10.prod.outlook.com ([fe80::552b:16d2:af:c582]) by BL4PR10MB8229.namprd10.prod.outlook.com ([fe80::552b:16d2:af:c582%4]) with mapi id 15.20.8901.024; Fri, 11 Jul 2025 11:38:39 +0000 From: Lorenzo Stoakes To: Andrew Morton Cc: Peter Xu , Alexander Viro , Christian Brauner , Jan Kara , "Liam R . Howlett" , Vlastimil Babka , Jann Horn , Pedro Falcato , Rik van Riel , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH v3 04/10] mm/mremap: cleanup post-processing stage of mremap Date: Fri, 11 Jul 2025 12:38:18 +0100 Message-ID: <27a8583cdfdaf065dcb2d16202ce540dbbc6da1b.1752232673.git.lorenzo.stoakes@oracle.com> X-Mailer: git-send-email 2.50.0 In-Reply-To: References: Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: LO4P123CA0689.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:37b::14) To BL4PR10MB8229.namprd10.prod.outlook.com (2603:10b6:208:4e6::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL4PR10MB8229:EE_|IA1PR10MB7285:EE_ X-MS-Office365-Filtering-Correlation-Id: 93b7f5a9-cd11-403f-8749-08ddc06f7adf X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|7416014|376014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?QKy1k9zFGkqHo86uG4WfgKrlFtZhMQz6GhLxqMSVfxDmy+9FZp5Fa286nmrZ?= =?us-ascii?Q?WcZx+0dSf5ec9eKRYBu1MblJl0bRJog61/qA3JiaN/5gFCoFn2khLkeo12xc?= =?us-ascii?Q?OOk47MoOnPMti25MubPF9gvPVxIaNtiTF+3rQ+48qourdTtKCIe0CqW+MW/R?= =?us-ascii?Q?o7VlPL8ip66OWv1xV4+inO72Bf6D2uAXG/xKk0qCuqh9k02LTuyPvT6dzNcN?= =?us-ascii?Q?qdNeXdQrdNiZ7DYJ9Pf6VehU6QbAcp4eWrntm3iAyEfMu8Dd5eOT1034/j9v?= =?us-ascii?Q?P/Ykyej+W0OLsOI3X3q56lHvOIWcwGg/s9cvWIJeg2B6ecnTSPx17JK/iQpX?= =?us-ascii?Q?fWmA7wOCk0XzGYc+plvACBjRvU09RNmPwLrKInvhY5amVr5DQG1Ujrh17pPx?= =?us-ascii?Q?+PnuyUE+fKBf5hyOgvO9ESFydIttt3nApOCSWAdVkxdZmL7SYt0rMXJmw537?= =?us-ascii?Q?PawfLPOXsRcJ5nTgEKwIiVMmHHIjqgaCrxPK7fOBO1aVMwr/uh6pTIWNRCVg?= =?us-ascii?Q?Q8e0MS8Y8HTl0XQ1ETuYiajyawq+3d4wQg5OUTyPzL0mspKYC532v8kdBTlP?= =?us-ascii?Q?dL1XLB/FJieyr+fbrnH6Wx+Z2kOdw/p1sjh45fmPFBoTECO/kwW7S01oXjLF?= =?us-ascii?Q?Yg6J0ro0+TEQESfjPVAq1Fo08J5KX3mHuz7IihW29fgazGrL1YmvGYtoLm7w?= =?us-ascii?Q?iLcgSnaINn0vRjsK66j2U8O2UmitIyl/h2/iP7mhUEFDdnGFHYNZuvGI9gIz?= =?us-ascii?Q?si1eorsluZ/5riypE3svsTM2WagZgSIvXEzlYGFVpSMkdja9Uq1CtvvTobp8?= =?us-ascii?Q?HJdyzPMXO7rMz1UtC/b3eXtF+1I0S7PuVVPPRw1V/PQCCasPV1m6eJqVq+80?= =?us-ascii?Q?ObTsco32+EgEXdiRNiVOMgGW7/XicOP4X39Tx7xXKGCZl71mstDL/p5EE2nY?= =?us-ascii?Q?TgFuP4G5d9m8tFquw2ierW0KQOJ4a9+u6kLuJB6HyBXJLut8O+NLios3UlWr?= =?us-ascii?Q?Vbafz9iciybrQngHt0IWd+DyabpevSaM14TagD6ARvE+vnWgaBAXWF25ftKy?= =?us-ascii?Q?UycwJ18PlI1jxEPyy4DdJC1gfqB2/sVexf0f0SY0Pg85CDWq4HsuT+bZQRzM?= =?us-ascii?Q?71d1eSyeuwVKoJQ1Ob9bvewFbIgvmaKHZaEaNiOvfGaSXck+Kl01KxkGVVba?= =?us-ascii?Q?dnIV5sx+tbFMqgeWBvqMvhIhmweCtAoMmdBiUskQ9sJTEUqSKA/xBPBbUPB/?= =?us-ascii?Q?Qm50rGGIgp3w/OulMeoFLufnJXKZNI0fDCup6bcJ9IQLp4K2uJuiPtEHEdlW?= =?us-ascii?Q?Hm+vsOcnVJ4Ud5KaXdtGH4rxVMpSpjICmMNJ3jpLzo5PeRD7OUoYl9RUqC4G?= =?us-ascii?Q?UUfjMKNMT5nWz2Q81gZ3CvzFM+gKQmzx18CymVHZ813XU7OEowH8Mt0yfvP0?= =?us-ascii?Q?qxCrbzKtimQ=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BL4PR10MB8229.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(366016)(7416014)(376014);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?E7mMS37WKZeaKG3iImlA4fRFWyCzSB1NVpvJUb8lAbtJ3YYQJ3OiDEfnsOVF?= =?us-ascii?Q?c+CtiLIaXrS0Yzz1X4eqtReHYoB6VSnYW3KPLMcKRHefRY7RpIQJ/qKNwrID?= =?us-ascii?Q?PCaLaLZvW7Cai3hI3jwlsHT8NyjVFQSytkl+udsEdy18MTnif8RKqLElGpGX?= =?us-ascii?Q?Qwzg1TEUZH8RfaVSS1a9GbeU3QjdYEryhYKYZ+5eINS6D1UjNFNZF1cJRSOO?= =?us-ascii?Q?xywMQkZgCAhy4twh2Gn/1Rbnx8LUYqcPCVu/Z4Ux8YL34xxssNXoUhmG64Bw?= =?us-ascii?Q?WfDZlzRWOhA5zHgGCGAr1iqgtKvwchkh5/UVlmH4VLO0L7zrDreNsfBWCR/f?= =?us-ascii?Q?adxbPFx8OLkv2l8+zjjLeAq7P8JmKR8e2pcbJUqHjFADENN6yp0PZ2Omurpf?= =?us-ascii?Q?wKiOSi7gY7EzohXgWcesyPnWhyjRmiIUXc6qOxjbgkooqwKTnob4EBF5Xf08?= =?us-ascii?Q?oSdVVUazr1M6/sBUztR/k4k5HU+YcWvlKHO5qU/HfyAv7ZNHosjW8Fs3vvDI?= =?us-ascii?Q?9nGsrBVSz8HYAGhKwQ9eJu24nEHLlULtVonhFvuyr9OMmCWoXUYFturpQaXD?= =?us-ascii?Q?Luw10eT1n/LkG7LFUoRuW2rl/No8sRd3g+LKw2dTGuuym+pBF7QBFA+r0t+7?= =?us-ascii?Q?SAeRQwVCMf6xwwdWFVXeeM7zyySSEUNE4Y6dKiqdZ+U3WkAvJRv+wF4l7aY0?= =?us-ascii?Q?F5qIJ8q+OGSH+bX+E8/oaL84t1gEjAyR863qhEykdujNY4COOXiEmCtLwsH3?= =?us-ascii?Q?owZGA+rYRo/I0+du9OC6IHKo36DX3xlDII1UdNFRDZ0hmeuauucw+gvBK1ZV?= =?us-ascii?Q?KL4MQAClpSKPOU6FQ2bO9cmvwUeYQBZySnet201gJO27TCkBP+op2TI1FB0d?= =?us-ascii?Q?Pexg/lqlbefqJSHvhVP51zeVlMbQQ/oHMgOl3kPQ2gsL1+IbURmnvTUS5KhF?= =?us-ascii?Q?+7xZSGE04yLXYQAc09oUqo5f37a9d4FEpmSPaNPq2Ftef2+zqhCBIZcyFMyR?= =?us-ascii?Q?3uzT09m2B49wtMil4+WWG4uxPSDFesNqw2A0wI7o7REK7a6TjNE3GnXFl9zV?= =?us-ascii?Q?D+MGaYPVlQv/5fZsP0OlPxRMnTSPkjXPuBHDen/U85qlp5wouEGNVZudcoxM?= =?us-ascii?Q?gOREgkOpoTbaDtzOWTvgjTXnAdw4kxmK9gFRNqCReaaeEHefqa71IsRIk3uj?= =?us-ascii?Q?0FazsAQtaOyLx/CCFbaCGyv00MB01rXDX/YRIJETleg7Gw11l/aocGz7Uoya?= =?us-ascii?Q?254P9DqRZm/VqDzyawMgPCuMQLCYiowjunAlA/lz12CqMuFXKSd/nATHRdR9?= =?us-ascii?Q?iOamCrDuJdd3axOE9JvPixDBUE3J3b5tSU/viiqA2E5wkW/h8PWOblDr9mhV?= =?us-ascii?Q?oPFZnwWjWVRoYOxmvSjCkfcblfQxS9y4AzPtJBANNNWV1eGYFnO8sLypJDxB?= =?us-ascii?Q?UBZR7yDSQjBnRDAqgD/2KvuOPW9YC8GRfCwdLYDAerQF/8BOwNX0rzKMlSG1?= =?us-ascii?Q?K8Kxuo5dAVB3H1D1g7SepsxgP44bcDl2yaaBAUFEmJDCFgN85GEHXGwKko0W?= =?us-ascii?Q?nUaAh/up9LRlVVYTIKBKxlAxuxtBiG3heMhsBGIkWTdaVk4sX0Q3cv6tCesY?= =?us-ascii?Q?6Q=3D=3D?= X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: RHHpUnMc24oG9WcLj5jR7pi2/CVZLxx4ZezNPgcEwk1UhMuGqpxPaQ/n/jYdWgimwbcuWvax4bZkrZMBk/1ECQDxedg00Op2z857xOA68E52nk9aBpJ9kD4DFMMCPOGQVUb7Y6rNEVeLQZSP4GIFHq/bSZ/G0L3eUYmsAxLfb57TzXDKEDOSDXurKRNOFdWFznBxnposKVxyLEwcn1FeZ/MMvxmKkixWw6jY1d0OGFQTnmBXMA2Tc/N2k4Yn8b+qWAlT+C/yxJK6NhjitCu8fLYHgj7Rvxtv5F+7vTgp9Xt4gzxwzQS8SoZHQb8PtscxW2JL5fq71im8v1baWkvSk0N+yNj044VYuSWvmFoBbJAHgMsyWwl/1lLkQICbrA6sBAZrF+WGHCj0yADDvbGpGAyv8FFoEFnBWg4Yo7t+xXcM9XMAygZBTxjKNAMK0fxGfNOy+tl8RHvrZi8DqeJH1//RxzgBWg7y64kt0idVsdvMsIkmSHO+Dk1TFwCpC4RvnloaI3HdIQHiAlO2fEr2Ad0l+0edBDEm5IS/yjnpFQkDqf+6hKUETEUpHtN9W3rEOCBq9GrE5wgxBMihuQRn7h26XqaPTJlX1iIA9kRvnfo= X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 93b7f5a9-cd11-403f-8749-08ddc06f7adf X-MS-Exchange-CrossTenant-AuthSource: BL4PR10MB8229.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Jul 2025 11:38:39.2325 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: /+YJUIIUXia5Kfy80OFgmdSE/lIlKFZFEHo/aIb7pbJGfgkMxfL4W4asjviDuW/JZWeYpGlcwQpRDJuczlWuNb+HYbXyG2ek+QGlu9cDtbE= X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR10MB7285 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.7,FMLib:17.12.80.40 definitions=2025-07-11_03,2025-07-09_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 adultscore=0 suspectscore=0 mlxlogscore=999 phishscore=0 malwarescore=0 mlxscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2505160000 definitions=main-2507110082 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzExMDA4MiBTYWx0ZWRfXywE91h/qBP/X aufcGbVL2EdIF6khuHYTk/McgDDEwA6NbrD+i82U0YM7N1v2+KBzxk7kLUdKRg8IYydzk6e52DC 11WmVLgF7qMyC/xbrCfiE6SUOL+fT0GPTrjw4aiiHB55Yb0VCMw0sHnFD3W8Q1uUcKnSwSefZ5+ QbB9CA7YU+CwbNmCb90zm/YoRmRGpNB33GEzM9FeWJHhAnC+b7vnAaDNc/RlG4GvioO+ZUt8ku3 Vgs6/5PtGGtG/xwYjBElhnbfWH5TTJbiCA2ft2gh+1xAYA1JZXQ72MWb60LePErAkk3kCJL2+71 aQGdU2tjMN+szjA8RdAC6E5myGwqYdV7bWBgC0Fs+U9RCShtjOAbmmw2uMJgSB30VK1RvnHZwpk dGhtm0aSXEdHWcFyONh8EUkyYAh09ubqedbmeDipSywu/Qx3i/5cYOK+Kd/hGtTOjTO1ANgX X-Proofpoint-GUID: bjZiND8EdaUm3ni92seQTdgWb5R36B8h X-Authority-Analysis: v=2.4 cv=FsIF/3rq c=1 sm=1 tr=0 ts=6870f7c2 cx=c_pps a=OOZaFjgC48PWsiFpTAqLcw==:117 a=OOZaFjgC48PWsiFpTAqLcw==:17 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=Wb1JkmetP80A:10 a=GoEa3M9JfhUA:10 a=yPCof4ZbAAAA:8 a=ULdmrcW3YHslXA7JyQcA:9 X-Proofpoint-ORIG-GUID: bjZiND8EdaUm3ni92seQTdgWb5R36B8h X-Rspamd-Server: rspam11 X-Rspam-User: X-Stat-Signature: jq47rf154j3t6awpu16brkmq1ykmkssk X-Rspamd-Queue-Id: 2B9E3A0009 X-HE-Tag: 1752233927-934453 X-HE-Meta: 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 CFKFnYhU 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Separate out the uffd bits so it clear's what's happening. Don't bother setting vrm->mmap_locked after unlocking, because after this we are done anyway. The only time we drop the mmap lock is on VMA shrink, at which point vrm->new_len will be < vrm->old_len and the operation will not be performed anyway, so move this code out of the if (vrm->mmap_locked) block. All addresses returned by mremap() are page-aligned, so the offset_in_page() check on ret seems only to be incorrectly trying to detect whether an error occurred - explicitly check for this. No functional change intended. Signed-off-by: Lorenzo Stoakes Reviewed-by: Vlastimil Babka --- mm/mremap.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/mm/mremap.c b/mm/mremap.c index d57645573e0d..87cab223f2bb 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -1731,6 +1731,15 @@ static int check_prep_vma(struct vma_remap_struct *vrm) return 0; } +static void notify_uffd(struct vma_remap_struct *vrm, unsigned long to) +{ + struct mm_struct *mm = current->mm; + + userfaultfd_unmap_complete(mm, vrm->uf_unmap_early); + mremap_userfaultfd_complete(vrm->uf, vrm->addr, to, vrm->old_len); + userfaultfd_unmap_complete(mm, vrm->uf_unmap); +} + static unsigned long do_mremap(struct vma_remap_struct *vrm) { struct mm_struct *mm = current->mm; @@ -1756,18 +1765,13 @@ static unsigned long do_mremap(struct vma_remap_struct *vrm) res = vrm_implies_new_addr(vrm) ? mremap_to(vrm) : mremap_at(vrm); out: - if (vrm->mmap_locked) { + if (vrm->mmap_locked) mmap_write_unlock(mm); - vrm->mmap_locked = false; - - if (!offset_in_page(res) && vrm->mlocked && vrm->new_len > vrm->old_len) - mm_populate(vrm->new_addr + vrm->old_len, vrm->delta); - } - userfaultfd_unmap_complete(mm, vrm->uf_unmap_early); - mremap_userfaultfd_complete(vrm->uf, vrm->addr, res, vrm->old_len); - userfaultfd_unmap_complete(mm, vrm->uf_unmap); + if (!IS_ERR_VALUE(res) && vrm->mlocked && vrm->new_len > vrm->old_len) + mm_populate(vrm->new_addr + vrm->old_len, vrm->delta); + notify_uffd(vrm, res); return res; } -- 2.50.0