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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 15EA9CA5FA1 for ; Tue, 29 Sep 2026 02:39:07 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D390E6B008A; Mon, 28 Sep 2026 22:39:06 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D10EE6B0093; Mon, 28 Sep 2026 22:39:06 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BDA336B0095; Mon, 28 Sep 2026 22:39:06 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 8F90B6B008A for ; Mon, 28 Sep 2026 22:39:06 -0400 (EDT) Received: from smtpin26.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 1560F803BB for ; Tue, 29 Sep 2026 02:39:06 +0000 (UTC) X-FDA: 85265242692.26.41B4047 Received: from CY7PR03CU001.outbound.protection.outlook.com (mail-westcentralusazon11010061.outbound.protection.outlook.com [40.93.198.61]) by imf09.hostedemail.com (Postfix) with ESMTP id 3A165140004 for ; Tue, 29 Sep 2026 02:39:03 +0000 (UTC) Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=AS8wTGZ1; spf=pass (imf09.hostedemail.com: domain of ziy@nvidia.com designates 40.93.198.61 as permitted sender) smtp.mailfrom=ziy@nvidia.com; arc=pass ("microsoft.com:s=arcselector10001:i=1"); dmarc=pass (policy=reject) header.from=nvidia.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1790649543; 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=MvaYIht3qC43l33T9gA6PBsXi5WuPyLqVZAdhOrQEok=; b=l98K7OvPNXyRK2ZX3IqVvuMgzOsM8/GL50/2cjzs/PpYWmEHtUZ66mZUggz5Y3Df4cBeaU ysP+/o8Y7WHoH/VONoIAuvaNOi8IM1DQ7hG6IBR8HKaz83TrMTB+eun0uftDTT9vzJhj/X laeL7duhh71xbfV8R36h9puc0O1tJII= ARC-Authentication-Results: i=2; imf09.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=AS8wTGZ1; spf=pass (imf09.hostedemail.com: domain of ziy@nvidia.com designates 40.93.198.61 as permitted sender) smtp.mailfrom=ziy@nvidia.com; arc=pass ("microsoft.com:s=arcselector10001:i=1"); dmarc=pass (policy=reject) header.from=nvidia.com ARC-Seal: i=2; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=pass; t=1790649543; b=uY9ftmtZugHmGlraDOOGszABfxualyPApM9tt2uXGN4DW5+7p40vMYgwPG6zoSAqWXOycx 8jvi7vL2p+pB3w2LFdm9iX+Kmcw0Zy2qVmWYLrMskmU5WjGsyvEVt7jg3jJQCD/wOB1Nj2 y8DggFx4O1cdg+rFNBpAT6RUKi0U0hE= ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=FxrJD4y4/9tuSyk+P+9pc2N4nmFYLRtdMAWwZfUlv9T/7jb8JUzzcH5d9chPITiU0ebHt22hY1G41Sau58ko9u1rgBTgZk/0WFxnEjxJ/G6JS2eYLz/nPbv1yYW4FT4Z57kT0HM2q4NiDXULFA9aXerk2mIwf8rHLky3zmBSSjwFvFI5oItKYmPpnFmpvyqThOV+X3xesIeV8Rn9UPIO3/yf9e1nha9S9O45bi3KjVxp4eCwL8Fsyn4M/JwyPG+E0dKdb2OiwjWjx4vTuaqIEz/3qc3v7vEabBR0oiedKNlE0RmE2/aGrfBSxP/wCgidDQRgEoZ5dxoxMwIN/+lWxw== 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=MvaYIht3qC43l33T9gA6PBsXi5WuPyLqVZAdhOrQEok=; b=I8RhcZuYVsswM4jDrKuo54SLDUwYNYKPhOx5I7spYpCEoQ4zZM8Zq9XD/qMAuLmKrg7oqv2fAcIJJqxXviN+Auh+1oF2gD2qZYQ2Uf3RRPtDwMuqTQQrXpf6e5xqJbT9PNGgvp+qKjb29xJwjEMBsJO93bnpzIZ37uJsYJ/4AvZXhOk0pUWlpHcD61h0Wni5bM5wqB7mNhHLmx9Ff8PftmjCVlIK5HGJfsvolXDibbVt+7NrBOyyJAYgIGpWn34Z9rH4WvebymJdXZtsjDaFgT4VYTJ9vYAqQECP0C/HB/fW8joYoUnfv1EcV5YZCMlRYNqGqqVQ3P/oyNCWiCDPYA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=MvaYIht3qC43l33T9gA6PBsXi5WuPyLqVZAdhOrQEok=; b=AS8wTGZ1fj54HmZvvCwlcFsrIgj22uOpVJo7nWl/JAEg4azMV6alg0JlSVyWozgdL7dZzrtj3OId+U2f7wacpXSNJyuYGTUdvL/EcdV6aK1YmNSvv0+y1M9VNrYOBUh/7CpvH+l1x7JYASkC7UcShEf/XEIGzJC/tEsZUeHOXd37QISzgieWzH8H917gB8isGyhV2G+qBkfj4tsOSoHe1GrNnQZuZ7y6mOP995gWKNjnCEvTxkOvW0NBCZd/4YIwcxvc8EqwMFjbBpsE4s3BxP8ZQllNPY+MdhoNSzUXNv5nh1khFK1s3/sCtiDtuoSXOgq2f5DkrTY/sYvmcnzJDw== Received: from IA0PR12MB8374.namprd12.prod.outlook.com (2603:10b6:208:40e::7) by LV0PR12MB259608.namprd12.prod.outlook.com (2603:10b6:408:3ef::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.451.24; Tue, 29 Sep 2026 02:38:57 +0000 Received: from IA0PR12MB8374.namprd12.prod.outlook.com ([fe80::d85f:4c87:ae84:3f16]) by IA0PR12MB8374.namprd12.prod.outlook.com ([fe80::d85f:4c87:ae84:3f16%6]) with mapi id 15.21.0451.022; Tue, 29 Sep 2026 02:38:57 +0000 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Mon, 28 Sep 2026 22:38:50 -0400 Message-Id: Cc: , , , , , , , , , , , , , , , , , , , , , , , To: "Lorenzo Stoakes (ARM)" , "Andrew Morton" , "Liam R. Howlett" , "Vlastimil Babka" , "Jann Horn" , "Pedro Falcato" , "David Hildenbrand" , "Mike Rapoport" , "Suren Baghdasaryan" , "Michal Hocko" , "Jonathan Corbet" , "Greg Kroah-Hartman" , "Dennis Dalessandro" , "Jason Gunthorpe" , "Leon Romanovsky" , "Paul Moore" , "Stephen Smalley" , "Jaroslav Kysela" , "Takashi Iwai" , "Alexei Starovoitov" , "Daniel Borkmann" , "Andrii Nakryiko" , "Eduard Zingerman" , "Kumar Kartikeya Dwivedi" , "Baolin Wang" , "Nico Pache" , "Ryan Roberts" , "Dev Jain" , "Barry Song" , "Lance Yang" , "Usama Arif" , "Kiryl Shutsemau" , "Doug Gilbert" , "James E.J. Bottomley" , "Martin K. Petersen" , "Jaya Kumar" , "Simona Vetter" , "Helge Deller" , "Sebastian Reichel" , "John Hubbard" , "Peter Xu" , "Masami Hiramatsu" , "Oleg Nesterov" , "Peter Zijlstra" , "Thomas Gleixner" , "Ingo Molnar" , "Borislav Petkov" , "Dave Hansen" , , "Arnaldo Carvalho de Melo" , "Namhyung Kim" , "Mark Rutland" , "Rik van Riel" , "Harry Yoo" , "Juri Lelli" , "Vincent Guittot" , "Maarten Lankhorst" , "Maxime Ripard" , "Thomas Zimmermann" , "David Airlie" , "Will Deacon" , "Aneesh Kumar K.V" , "Nick Piggin" , "Arnd Bergmann" , "Muchun Song" , "Oscar Salvador" , "Matthew Wilcox (Oracle)" , "Jan Kara" , "Marc Zyngier" , "Oliver Upton" , "Catalin Marinas" , "Madhavan Srinivasan" , "Anup Patel" , "Paul Walmsley" , "Palmer Dabbelt" , "Albert Ou" , "Christian Borntraeger" , "Janosch Frank" , "Claudio Imbrenda" , "Alexander Gordeev" , "Gerald Schaefer" , "Heiko Carstens" , "Vasily Gorbik" , "David S. Miller" , "Andreas Larsson" , "Alexander Viro" , "Christian Brauner" , "Matthew Brost" , "Joshua Hahn" , "Rakie Kim" , "Byungchul Park" , "Gregory Price" , "Ying Huang" , "Alistair Popple" , "Chris Li" , "Kairui Song" , "Kemeng Shi" , "Nhat Pham" , "Baoquan He" , "Youngjun Park" , "Johannes Weiner" , "Qi Zheng" , "Shakeel Butt" , "Axel Rasmussen" , "Yuanchu Xie" , "Wei Xu" , "Chengming Zhou" , "Michal Hocko" , "Miklos Szeredi" , "Xu Xin" From: "Zi Yan" Subject: Re: [PATCH v3 30/40] mm/madvise: update is_valid_guard_vma() to use vma_can_merge() X-Mailer: aerc 0.22.0 References: <20260917-b4-mmap-prepare-vma-flag-sanify-v3-0-4583d8a23bca@kernel.org> <20260917-b4-mmap-prepare-vma-flag-sanify-v3-30-4583d8a23bca@kernel.org> In-Reply-To: <20260917-b4-mmap-prepare-vma-flag-sanify-v3-30-4583d8a23bca@kernel.org> X-ClientProxiedBy: YQZPR01CA0186.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:c01:8b::6) To IA0PR12MB8374.namprd12.prod.outlook.com (2603:10b6:208:40e::7) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: IA0PR12MB8374:EE_|LV0PR12MB259608:EE_ X-MS-Office365-Filtering-Correlation-Id: 6d6b35c9-7282-40ea-50a5-08df1dd2cf79 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|366016|7416014|23010399003|10067099003|11063799006|56012099006|4143699003|22082099003|18002099003|921020; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:IA0PR12MB8374.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(376014)(366016)(7416014)(23010399003)(10067099003)(11063799006)(56012099006)(4143699003)(22082099003)(18002099003)(921020);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?LytUSFU1MHJGdGxiU0N1bjhocDdwTnNHUWZxSkszSzNKNXd0YzJyTmpDUWIx?= =?utf-8?B?alBSbVhKeTVJK3FQZjJYSXYzeFpJREFjOGFSTEU4UmFsTE9tTm1zb3lrVGJ5?= =?utf-8?B?eWFPNVpGd2J0WmR3eStJN0RoWEVWQWowMVIyTVkwWU42dVhKZVJiTjV4Y1dO?= =?utf-8?B?b0tSaFFxd2x1R1BaVlBmRHd2a3FweXd6c29CdXY4Rzl1L21XUzBzbjJ4TXYz?= =?utf-8?B?UUpoOFJRd2c4NG1McWFqbkdzQ1FheTd2eHJWUTNrOUpqUHRyK2QzNzNmNnVw?= =?utf-8?B?blpOdHd6UlBGSjR2ZDdjMTI1blBkT3RuNzJNazNJSytDajFzUTNxVTdBdjJP?= =?utf-8?B?VDFoTk5nWTNCbEpOOHZRUUdiME1tUU0wTDR1NkFUeU94aExFR1JzazkwaFV1?= =?utf-8?B?RElzRS9EMmJBN0tZLzJ2eEFwWFNCSW5tSkR6MDNRc0pNQWVUZHY2QXg3bURC?= =?utf-8?B?aFhaWkY1alRDU1VYeEJMb1NRUTRnd1NHTVRLNEZGOXhPTWhXWU80L3pqRis1?= =?utf-8?B?NU9QeE9WN015Sm5KZDF3am53ZnNHWTcrTVZKV3RGVlp0NjRoYVlMQi8xelV1?= =?utf-8?B?bi9iVXFXRnZCTHdvb1E0ZjY2T214ZlYwOFdPZjVSQk1COHp5SDl2SzFJZTho?= =?utf-8?B?ZFBuNzd2UEZnd00xNlRNeGpzWEtZbXloRWZyay9iVmxmay9hSGdZdUlvNHlL?= =?utf-8?B?TnlrblRzUWw4STQwN3VIVEhxNURHd095SldTQmRCNlVSZHRNaS9Fa3Fpc1VU?= =?utf-8?B?anMxSTRvUHYrY251cFV2NmgrL3pBbERXZW05VWIxMllSRXRrWmY1MngzSTgr?= =?utf-8?B?SUY1dldIUHhjaEt5aW1oWWFpb1lWR1lwak5lZVNzb29JVE5PaS92Rm1ScWFo?= =?utf-8?B?YW84RDBrdllyTzdUVlk0OHhwZkdhOE5QWkpneXlwWjgrWWo1UzZ3NElqdGdI?= =?utf-8?B?UmVzMGlVR0lTMWg0aXFRNGRrQVFRSDA5MlB3d3ROalM4ZktvYXN5RStsbDYw?= =?utf-8?B?SkpsdWxiWWhtTE1qbHFBYkoyaWlyQlg5QjQ2NHdOeXV6V1BTU2F2c05jK3Ar?= =?utf-8?B?SjdZYXdiZ1NUZjlQOWMvVitXd0xEeDJnYTcxWnI1U29kRG1kc1BWb1U4dVJx?= =?utf-8?B?cXg0UzlYYzJHbkJtQ3YvbWt5cVBTSTBpT3phSlpsVUFLM1JwVWhYMFArTzBE?= =?utf-8?B?QytLVEdPVE5IOWVLSlpJa0tYUlBuMmpDVmszQjhPdTVsa3dFV3NhUkh1ZWhU?= =?utf-8?B?VEMrNkxaaDhsR0pzSUZkdExzUGgvbnhndjJxR2l0YldwNlhESlN1TGxWNEZX?= =?utf-8?B?M21RelFudHVQNFlIWUc5bTdCYmpIWFRrekxrTmtNSkxTWXZiTk9FMjlvdkxU?= =?utf-8?B?N1NIamtEc2dscUlPOUxRdmdDdkV1U1E1VlR0ek1MYVdmdThhbUN5WWNvSWd4?= =?utf-8?B?YlBscmp5dnN0MkpjWnRyWHJLNEMxMjlHVE53V1NBOG02VjlUTXhjVGhVVzAv?= =?utf-8?B?d0FPRzlUd2tzMnBDK2tNUTFrU3h2dUhHbk5UZHg5OTF4NVE3ZDRuajVISGJ3?= =?utf-8?B?RnZ3NjZxR25oQ2o0emRkOXhNbk1qcE5HWmx0YXQ3U1QrcnBCeVdjejM2bXR0?= =?utf-8?B?UGxJczdlbWxUNE53Z2VjV0FkNzZwenZabk1PbGhmYVJiYVdyQU1IU0FURWNN?= =?utf-8?B?SGlTZmtHVVEycDZxUTR1eGcyMHV1aFA1NVZjVUxxVkN1K1h1b28zNkd5SEVQ?= =?utf-8?B?QzVwRFE2eUYzVTFiR0hnQUIwOXA5RmFBVG12L0dYK3RMeWhMMjJPYTlIMUI5?= =?utf-8?B?b2lxVVMxUm1PdCtIeUZPMnJQaDlLdExqYllVQktiREh4ZmZYYlYyRHZuaC9q?= =?utf-8?B?M3VNeDZqT2ZKSHppQmFmMTRsdTRwQWVXbk1NZFBDMmhVdnJpQS9vT0wyVHF5?= =?utf-8?B?ZWN3cmR1VE1sRCtXRUt6UDNwOHNtaDdmTFN6N1YzekEvNmpKNnR4Q2lYbWto?= =?utf-8?B?bmd0R08xeEljbTZNbXBMVkY2RmRwZlI5M0t3bmpmaE00aXh3bG9adHhSVGhO?= =?utf-8?B?QnFsMnVGYnRPTVBSczhKbjQxVFUyU0dpcS8yZkkxNnIrTnQxeElFQThRU0Ja?= =?utf-8?B?a1lHQ3FJSGUzMTBHN0NTOVBtNUt0b3FHZzNITXZzY3ZvN3d0UWFrTnBpNDB3?= =?utf-8?B?dC9BZWtta2JLUVN3NEIvS1dEL3VXU05HRUkzc25hWmJWSHZJaFU1MStxeW8x?= =?utf-8?B?cmpLZ0FXL1d2VkovWlFIbWo5aE5ITW5Cb3U4RkoxeDZNemdtZ09zb0xmb2F3?= =?utf-8?Q?PmSTRfh4bbbBx98Nox?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 6d6b35c9-7282-40ea-50a5-08df1dd2cf79 X-MS-Exchange-CrossTenant-AuthSource: IA0PR12MB8374.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Sep 2026 02:38:57.2557 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Kz4Gh+4PfT9OthCqi3aJai8u3MakmVbDYvKctajS1UUQMnHv4XP6ftmnTAa84qvE X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV0PR12MB259608 X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 3A165140004 X-Rspam-User: X-Stat-Signature: edgowkbh3w67ug13jbcjfdsicewwn3o1 X-HE-Tag: 1790649543-434701 X-HE-Meta: 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 cquQqfnX 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu Sep 17, 2026 at 12:22 PM EDT, Lorenzo Stoakes (ARM) wrote: > We currently disallow the installation of lightweight guard regions in VM= As > whose flags intersect VMA_SPECIAL_FLAGS or VMA_HUGETLB_BIT, or > VMA_LOCKED_BIT unless allow_locked is set. > > hugetlb VMAs set VMA_DONTEXPAND_BIT so this was already redundant, > VMA_SPECIAL_FLAGS already sufficed. > > However, now that VMA_IO_BIT is only set if VMA_PFNMAP or VMA_MIXEDMAP_BI= T > is set, this check collapses to being the equivalent of > !vma_can_merge(). > > Update is_valid_guard_vma() to reflect this. > > No functional change intended. > > Signed-off-by: Lorenzo Stoakes (ARM) > --- > mm/madvise.c | 20 +++++++++++++------- > 1 file changed, 13 insertions(+), 7 deletions(-) > LGTM. Acked-by: Zi Yan --=20 Best Regards, Yan, Zi