From nobody Mon Feb 9 10:32:14 2026 Received: from mx0a-00069f02.pphosted.com (mx0a-00069f02.pphosted.com [205.220.165.32]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5502636164C for ; Fri, 16 Jan 2026 10:28:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=205.220.165.32 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768559319; cv=fail; b=RH8CWzRraIClf6Sq51RTyKrSxzJHBeQ7cQ3xAcQ1XKdp+oM3li6ARjtLmIY211oj4ccWsiahpEZw3RhcWK5QhPzazeK/uydTTc0pUZ6vc/CBORTNPupwU/9ccXFuDPB2IFC6ayRyYYs1xDgbpILQv9/d23TUMKZKhkNAAmKrl2I= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768559319; c=relaxed/simple; bh=JmUgDCTlaSuLzND9mtKTimNiPr+chHd95mPYFo3s6TM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=GmS1cUGdR6aTGqDE3kpFp82feAgPewtsyJkbNb94NvNyNMM56Svl4DEzU1vzQp5eggW4VXnCt/IPTeRiN0urY0We/LGhEFtRX5fZ/zkv12XY6Pgjyo4qVC9bXMcpYSiA8RytVh6tUyGwCJDcds33eA5FWgjRY3MPykVHD4hHg8E= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com; spf=pass smtp.mailfrom=oracle.com; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b=UCU5t6mI; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b=THLYtFVB; arc=fail smtp.client-ip=205.220.165.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oracle.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="UCU5t6mI"; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b="THLYtFVB" Received: from pps.filterd (m0246617.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 60FNOFqH1431572; Fri, 16 Jan 2026 10:28:23 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=vCwhsCAbVWvkWcsHZfG1NjhpJ9liIgn+fCwIi6wkPuA=; b= UCU5t6mIWfGNp1alxrwQ/0whLugDQl4/zDB6vypC/hDFKBNxeqzZ7TbCVHM+h7Uj kYqtMZffWkyRIBclNzR9EN/4D40I27ioVt6GIgANykVql60VzqkZTqmQaokmYprt VfpN2Z53t8JOfE1uWUVdsVcdkqlrZtC3Z07hlIWIb04y8UuG9DpUZilrA0O/d5zF /0+IeDll41I4/RClYWLbE028IzGohghQ3GiSQuHFEO3XlDUh+bdUJjitOKfY0EVb k3MbPxtKHxorhIfxFxYAQ+OIDY4IImPwWHECl8OiTQm4v9DvnZOKaT4aQAGddEEm jEdcZr4RxQWEvL8/dph1Gg== Received: from iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta01.appoci.oracle.com [130.35.100.223]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 4bkre41sh2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 16 Jan 2026 10:28:22 +0000 (GMT) Received: from pps.filterd (iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 60GAG4Xm029363; Fri, 16 Jan 2026 10:28:21 GMT Received: from sj2pr03cu001.outbound.protection.outlook.com (mail-westusazon11012001.outbound.protection.outlook.com [52.101.43.1]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 4bkd7ph50w-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 16 Jan 2026 10:28:21 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=B2Ea83DeIZ94CI9Fjx7n3lGhS/N1HrnnejBB61vlMP+qtfg0YxvqZiXeIju9zLU7mvsuR/JJfwMtI06ZKghgkqwfju5mH9aMtqmmZQC9R2twSzufaF1vuC5WikqV4OIYDDMJzfw+wubwHLwspJZEpSU+n2xrDQu8MpOQslt//aGH9weg163KAyrnzv/zBEAtOpVveJGLDRlfq+VjNQiPghul70PWAH7MXvo/qj6HsUzu2q/Kmfm4JWYBsi3uXjOojDW7CRoHTwFG0IIYZFuFXZah8OTySzrKFmZpobm56phaXsNCedVfj0AZwOxQHEsZZRBVLUSyxNIlYigH3/g0PA== 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=vCwhsCAbVWvkWcsHZfG1NjhpJ9liIgn+fCwIi6wkPuA=; b=kG2DIWPXIcFFH5ck6EgGLboQg0OW8v3/r1QyCLxrjd16r0gkOYPXNT9YS3uGpgqSRhUZqSCDzIzh7UZFjsfHbFbqWszO845atfDEfzhO3eW8MQH2oJ+/qGLKFIQj863g1FbFaYNOtkR1BKp+lrvwWriKZ6oPoy0JAmKsTcilooWPgaLBs0naFfWDhNTQzKLoDPDBVB1yfhsjOKuvEZiN6wX/oqkOj6rOaHOubUdyBF/Fz5EYIO0oHRTpagujYHt2O1PPdT82oi+TX/r838pRLeXKoazCtR3IqJ0sKuSphFjGX2ySEo+P7Qb7x5NOh1t7rx9/QnPFawbuMjg64mnSzA== 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=vCwhsCAbVWvkWcsHZfG1NjhpJ9liIgn+fCwIi6wkPuA=; b=THLYtFVBJFsRrCBP+ouzhkfbj2hfXlzRqNgNcAJmE7mG7i2xZWCBEgRjU5LqzztjXsNeGiONIyHnSLAGtbSAt95B4QiBwADVDsRn4L056AF99Phlc036Pt5hQ1Jq6df8qhvJZlnKTZwuvBQ6lcHaPUrjC0hzPLAD4yvTzigWGBU= Received: from BL4PR10MB8229.namprd10.prod.outlook.com (2603:10b6:208:4e6::14) by PH7PR10MB6084.namprd10.prod.outlook.com (2603:10b6:510:1f8::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9520.5; Fri, 16 Jan 2026 10:27:58 +0000 Received: from BL4PR10MB8229.namprd10.prod.outlook.com ([fe80::552b:16d2:af:c582]) by BL4PR10MB8229.namprd10.prod.outlook.com ([fe80::552b:16d2:af:c582%6]) with mapi id 15.20.9520.005; Fri, 16 Jan 2026 10:27:58 +0000 From: Lorenzo Stoakes To: Andrew Morton Cc: David Hildenbrand , "Liam R . Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Shakeel Butt , Jann Horn , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] mm/vma: add vma_is_*_locked() helpers Date: Fri, 16 Jan 2026 10:27:47 +0000 Message-ID: <500845052f79ef0e23aba79fea767a42bdddc447.1768558900.git.lorenzo.stoakes@oracle.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: References: Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: LO4P302CA0040.GBRP302.PROD.OUTLOOK.COM (2603:10a6:600:317::15) To BL4PR10MB8229.namprd10.prod.outlook.com (2603:10b6:208:4e6::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL4PR10MB8229:EE_|PH7PR10MB6084:EE_ X-MS-Office365-Filtering-Correlation-Id: 45e77c47-8ca7-4c07-faf5-08de54e9eb34 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|366016|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?JAWzxiKmsOayniVblJ8GYMeZsup8APihX7uuPS3yGK1vsrl5S/OKOS74TOKl?= =?us-ascii?Q?UBdVVwJjCkRc9Q/gA7vpjFheZQ+SgU5ka4UKdSfBBsZl3gqj3MCK5+F2wAs0?= =?us-ascii?Q?LfwSskSdfOaW+mDOM+x8ihPhdVKQfkoEGqeu6WLlGJDO5gig3tBUa1yzZjSE?= =?us-ascii?Q?y6N9HVVLc7Cbuy7g7g1vNIwwDdNYV/qQdcPExY3lVxYEknYIj/9sG3nwSec9?= =?us-ascii?Q?kdiwLyzP86Az7SA5IWzO2nIE+ZQXBInhE1o8n4uBOPe+/5APmc4MJrQvdrgu?= =?us-ascii?Q?GnHgbuaTG8847K6LZ3VzrJZxGYdSzVn8gKmUtwkM01TjCHxBA8bUcwWqWAKH?= =?us-ascii?Q?o0PiPPZWPL+tozxYarc4QCwkerZoBSI7twJTODLLv+4qSmCTGSQZPFDNcuvq?= =?us-ascii?Q?rjVDrs7Y9ioQgF/9wQtj3W00gZgzzy+/iAdEiirf56CFYQmPUrudQMhzgFWy?= =?us-ascii?Q?iyyAQGnKWJBHQWTRt42xYhGQX9PaFPaDJPi/jD1XixpgIm8bV6wu3VuVVUGh?= =?us-ascii?Q?pkX5AD5VU/7gt1XpKCvp04hedcw+mCoCgWJYf1/1nzuOlfd9+CkMIaXP+FaU?= =?us-ascii?Q?mAFBgj5fVugdqvPkhcCEcVUe6LQU5ZhVmVsNFZtNEeoOepnFg7NzqU3QKlob?= =?us-ascii?Q?ITtzm6/M9hIV7BYVRAmLLBuSZauciTXetFQmUaZL7BkFsLe822ROnauyUKad?= =?us-ascii?Q?3C0wjKljAi4mE5dcxf3ji+SYLkU4FpPuUN6Qwrt+kEsflgyamxLqr+16S9WM?= =?us-ascii?Q?ud5AxoBPz0IbAW1ZfNzGbxLcTPFImTobrygZl6IQw70+RfcfzsS8cYXK9ATm?= =?us-ascii?Q?Ootzu/jqyIb/vsBqRknqqoIih7mZliq7D1RNbx19ZWj8aSPzWNb/cGcXoK5v?= =?us-ascii?Q?aN08ZS79pCmaV9Mtf5O/bAuydpF/CxJlgWCOkhvnqhvW3Hufa4HCZKZGA4Wu?= =?us-ascii?Q?v6XIpk/28ICOr93nk4buD4VZ4LxQvEVPQf/p6drpVYHg3NG3gwHRCNHiuY+t?= =?us-ascii?Q?cllL0VkayTwLRFLxJuzyhCYG9qqvfTgaoUKKxBcor0pSwN6jATRp8AFUPc65?= =?us-ascii?Q?9uXNYHaCHfDmlrBkltVcmXjRTyKDWyIbKlJ+Bp/Qkquy7uXrkJTE2BeT2mHK?= =?us-ascii?Q?2/CalEcQO36xQHxdXx4TGsGOXIyKu8ek6THvpQ63N2WoImnRa4Eaj5Bx0YYE?= =?us-ascii?Q?DeUgpx0IgiziR3PjtHcSUrBJPbdiTWCrlL/pfZmfwuBiiizt8aRtEKJdYnhw?= =?us-ascii?Q?RNGreHiBvnoBxMIM8BcECTrBNAxeQA9Vbx6sHIfUIb8lap57VJtczZykgB1F?= =?us-ascii?Q?CLrj9wIigbuaGV9wU+elM3O4+uVnwaoAiMzZN2MakJI92h6DsT6ISR5ZNx39?= =?us-ascii?Q?0KTYr5OhJ5RRLFpljTcobPiKdDEPuDKJvOvS1Q4X7ERSbxT0ZB12i5fJ24tt?= =?us-ascii?Q?gWWirYs0+LhT4Jq6UnMcVY5axdLqXssiWB+X5xYYQyDLWWyBsOjv6zQc4OOq?= =?us-ascii?Q?VW+FLxg7P0tX8dSaUPGFZVihP2zKoq2vFvJ8tvNyod1XYjlkZz40mXKkYqgc?= =?us-ascii?Q?zdYiAEYwu0KQD7ytBBQ=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)(376014)(7416014)(366016)(1800799024);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?qyN3I10YjVkNRm8q5FsaWdDoI424oPVchPFK8PLC7DoC/7i6oE/t9w+XH58m?= =?us-ascii?Q?8393eaNNSNO9SfWqYOrHTjbYuBjy0Dl3d0BWA96meR+epi15jg3OrM/kHwgl?= =?us-ascii?Q?P52RWZ2kgV/4k1/uGdHdBpGmDFT9u0n56HOyrSD273QlI7vErUVC/uCjXAeD?= =?us-ascii?Q?87YJr69/GARUD2wcy9qzPAWnKzeCOOLrHO9sEOcBXE6eTn7en11qrIS7UjX6?= =?us-ascii?Q?X3GfpVi4XEuXBlK9dWNy/VAwlWwnMt+IpWKl97Rj5G/ZGlNoYIDPCPxyEiSM?= =?us-ascii?Q?2G7WzjhGNhbGUIkPRglly9UhFq4zU2vz30Nq3WxdI7LlWvo1CU+M627JNMcC?= =?us-ascii?Q?Ib7PLtAt3v/LpJTIPuEnSRFkZEYeU0ymHXDPYLQEGekVhpcOrtD+R67CJ9h3?= =?us-ascii?Q?nYTXXoTItgvT6Azky43erv7x+9/KKEwzpzbWJ2nI98Kppmgo+BSxIiP2jtEp?= =?us-ascii?Q?kwGmC64ND3MCW8ip8+Ucka63J8oL/X/1FNC3RumY1R7EuH/Mq/ykRtzFPnv/?= =?us-ascii?Q?2tD0pQoxfLVhsBxOCbI/3ZrjQBimM9a6Ye60e4SnsQVJYvgqNgtKviqGg+Dm?= =?us-ascii?Q?AF51uVsrlyedOHkO3h65PlrfoIDdy4d4loER9PFkWwt8J4hp2+QCKkoMQLWG?= =?us-ascii?Q?+pdtvRoTwxuAErY/RWr7K7dVkzGMKdAur4IlQ+4qGxhzzfmNZsf0yXFd9FI0?= =?us-ascii?Q?mLQFhkutz5uH89X8ekUXlAW6jX9+fWZcjwMbpRYa5VzOJIRBaQwku3rFxMv4?= =?us-ascii?Q?USwPNtKmx8xSjAWyN3crENW3SB9JQLj4rP6zP0aVaVFIN8wC24MvFURC8kjd?= =?us-ascii?Q?OAmUcCsJ/P490FxxBbzToPuYdW+4/9xJUIe4d2bKGKiJuMGyLmDLQ6h8O3ZU?= =?us-ascii?Q?hX/C6HH3lWXY4jJq2CJzPhWQOFXU9xWAeSM8WzWyFhJsXYTI7U0SlfDQoro/?= =?us-ascii?Q?+g8Wzx+OUj9PnV69D4A/5eoSrnshMTNyer6xO3U21M/rP3jj8pE1OsbNeRzX?= =?us-ascii?Q?YhGK4QDhAnfuR0g/wwMvhL0SNz0LO2ZgtRH9zRXSgrhGQQmNJPskj6lP9ljP?= =?us-ascii?Q?Bjo4T/tX8Mq3unJmXSoj+WTR2LNJk0H0ZePnzE9D1Ttj4rZskNRJT2FFH6Jz?= =?us-ascii?Q?osQuI9IPT7YdNUIPV7ZipMDi3rOSIq9Ip9s8cuGrWory58XWoTshaWOtm1MZ?= =?us-ascii?Q?OCpRPf0yG2MPZLTcj4ou1+S2zEQQKdd7p1Ji7DhZZHAllMyUumtaNnsffrpK?= =?us-ascii?Q?X168RRdjB3lJwopDl+8HSzBS9NLrhYyw8TNDHDOtao0Ed8dGQR7zhctqPBg3?= =?us-ascii?Q?NOL7w37v/emrE4jQoOmN4wME5ZQCGvS4s348MQbyubcG5CY74jGs8ioyCGiP?= =?us-ascii?Q?8YJU1Jy0QBGRx7V6U1uGhHIx+AFTDruszbie6VJesQ52dZhzqUDanhSKGaL1?= =?us-ascii?Q?1ENgDZJi8FNMEDsw1sI+p/J/7D1/LFlCFH/Bhzch7V39xa5Zd4/SnUapPqot?= =?us-ascii?Q?9AuK7Gjtqr1v1Z0Llh9IYc+rctC3MNG+2ZppEcFn4HsNeY+OzeOvtS7zaUkI?= =?us-ascii?Q?UgiDthXIi5fyvAVo+6g+Ok5MwUcK1IUrk4x2GeQY8nnEGk6CBhPUEsbkYQds?= =?us-ascii?Q?VkNJlDRvicLbXu/UOBS6QsT2zjbZxOjLkvISZ6AlVznLAqBtVb2xNLCUR+xf?= =?us-ascii?Q?f8PSA/siv5FLe9cqX69cH/cLA8psa6pjcAG3xa5Sd3z6FJPSJWHIn7m8XUVF?= =?us-ascii?Q?iXTcjhAcckLgEdY6I82r4JEQWsG9avU=3D?= X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 45e77c47-8ca7-4c07-faf5-08de54e9eb34 X-MS-Exchange-CrossTenant-AuthSource: BL4PR10MB8229.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jan 2026 10:27:58.4218 (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: zkga77QJ6YZ05ey58rxcF9nb42wq8fC2rCub2WoqT73XUoQ1vm0iwvK5VRiA6Rwx0GKJg8S7yuO5s7TC9g+w7RauJXB0Rvvj71DNfRh0JGg= X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR10MB6084 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2026-01-16_03,2026-01-15_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 malwarescore=0 mlxlogscore=999 suspectscore=0 mlxscore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2512120000 definitions=main-2601160078 X-Proofpoint-ORIG-GUID: cdLnykWp63aN3HPw1VwbKKXUoZ6BI_S5 X-Authority-Analysis: v=2.4 cv=YKOSCBGx c=1 sm=1 tr=0 ts=696a12c6 b=1 cx=c_pps a=zPCbziy225d3KhSqZt3L1A==:117 a=zPCbziy225d3KhSqZt3L1A==:17 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=xqWC_Br6kY4A:10 a=vUbySO9Y5rIA:10 a=GoEa3M9JfhUA:10 a=VkNPw1HP01LnGYTKEx00:22 a=1XWaLZrsAAAA:8 a=yPCof4ZbAAAA:8 a=ifxR59YiP-webHxj34sA:9 cc=ntf awl=host:12109 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTE2MDA3OCBTYWx0ZWRfX35djrMXwBHl0 fgHn2ZUT28X/tkoxwMfhiOEqNFl3BhjehCvBxBmh8OP4U+SHXMGNUvBMvukKXWKG2BwVX7h83ot lGavhz/WvTOvEg2Le3t50tam18Pw16Rb81/hAOoDfkGuurZ7Vt0PwTor822Q0ttdRnNxJDXeUjc OAh+sKocx1/nLxzm0jw5T4vC0vRYtkAqdtZbp1wrS8PGnX2Cj4IhcAJXMV0k+XayFx5fSWC6FSu CutJAFyiEi1l6Pq4edUDqc3JoFH/u+2P0eCzyMO2T+UUZVgRujZ19JfFZhyYyvCsJ3iEq3pYNrU V4xqcHKmObUOQzun1Ismr5q2GxI/n+S9JjuMO49f6cFfkqSXk73xmaZhIWQDjL8iaguCTZQwdE7 tpfc1lfVA8ujUiZhTekovlDDysv29zp9ylg/df0zICo0fQ5je4NT/zn57lr8z+0+tfDhmckUOBf ytsBiIfOO6sX69zSOMrSgNw4P2t4Betdccg3Aeto= X-Proofpoint-GUID: cdLnykWp63aN3HPw1VwbKKXUoZ6BI_S5 Content-Type: text/plain; charset="utf-8" Add vma_is_read_locked(), vma_is_write_locked() and vma_is_locked() helpers and utilise them in vma_assert_locked() and vma_assert_write_locked(). These functions will intentionally not be defined if CONFIG_PER_VMA_LOCK is not set, as they would not make any sense in a context where VMA locks do not exist. This lays the groundwork for a subsequent change that allows for asserting that either the mmap lock or VMA lock is held. Suggested-by: Suren Baghdasaryan Signed-off-by: Lorenzo Stoakes --- include/linux/mmap_lock.h | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/include/linux/mmap_lock.h b/include/linux/mmap_lock.h index b50416fbba20..cd51e0a43c76 100644 --- a/include/linux/mmap_lock.h +++ b/include/linux/mmap_lock.h @@ -236,19 +236,31 @@ int vma_start_write_killable(struct vm_area_struct *v= ma) return __vma_start_write(vma, mm_lock_seq, TASK_KILLABLE); } =20 -static inline void vma_assert_write_locked(struct vm_area_struct *vma) +static inline bool vma_is_read_locked(struct vm_area_struct *vma) +{ + return refcount_read(&vma->vm_refcnt) > 1; +} + +static inline bool vma_is_write_locked(struct vm_area_struct *vma) { unsigned int mm_lock_seq; =20 - VM_BUG_ON_VMA(!__is_vma_write_locked(vma, &mm_lock_seq), vma); + return __is_vma_write_locked(vma, &mm_lock_seq); } =20 -static inline void vma_assert_locked(struct vm_area_struct *vma) +static inline bool vma_is_locked(struct vm_area_struct *vma) { - unsigned int mm_lock_seq; + return vma_is_read_locked(vma) || vma_is_write_locked(vma); +} =20 - VM_BUG_ON_VMA(refcount_read(&vma->vm_refcnt) <=3D 1 && - !__is_vma_write_locked(vma, &mm_lock_seq), vma); +static inline void vma_assert_write_locked(struct vm_area_struct *vma) +{ + VM_BUG_ON_VMA(!vma_is_write_locked(vma), vma); +} + +static inline void vma_assert_locked(struct vm_area_struct *vma) +{ + VM_BUG_ON_VMA(!vma_is_locked(vma), vma); } =20 static inline bool vma_is_attached(struct vm_area_struct *vma) --=20 2.52.0