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 3AF59C61DA4 for ; Fri, 10 Feb 2023 02:10:43 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 947936B00D1; Thu, 9 Feb 2023 21:10:42 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 8F73F6B00D3; Thu, 9 Feb 2023 21:10:42 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 798866B00D4; Thu, 9 Feb 2023 21:10:42 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 6A7E76B00D1 for ; Thu, 9 Feb 2023 21:10:42 -0500 (EST) Received: from smtpin05.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 336508115D for ; Fri, 10 Feb 2023 02:10:42 +0000 (UTC) X-FDA: 80449753524.05.9A6B8F4 Received: from NAM11-CO1-obe.outbound.protection.outlook.com (mail-co1nam11on2059.outbound.protection.outlook.com [40.107.220.59]) by imf17.hostedemail.com (Postfix) with ESMTP id 1481C4000C for ; Fri, 10 Feb 2023 02:10:38 +0000 (UTC) Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=dyiBHccm; spf=pass (imf17.hostedemail.com: domain of jhubbard@nvidia.com designates 40.107.220.59 as permitted sender) smtp.mailfrom=jhubbard@nvidia.com; arc=pass ("microsoft.com:s=arcselector9901: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=1675995039; 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=gw30FNRnuT/3IOLTpvOzD4yIWwEhfvsC73MRHoWUZWA=; b=E5K6drqJTuXOft8yuYaz6RK75b8RkIlu+tbC2YGtAHckPqcA0/ZFTitVFwipbzJqolcHNX djTNUCs7lQLtDW9xzRzfOqqjqlldoeptZ+Hq06r4iyQ8YM1JVxRJOpof8w5bgDCffJGSS7 yOJquD2w2LOsDmgatTEEu4jca42EOWs= ARC-Authentication-Results: i=2; imf17.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=dyiBHccm; spf=pass (imf17.hostedemail.com: domain of jhubbard@nvidia.com designates 40.107.220.59 as permitted sender) smtp.mailfrom=jhubbard@nvidia.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); dmarc=pass (policy=reject) header.from=nvidia.com ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1675995039; a=rsa-sha256; cv=pass; b=DGSgyQRfk5dHO5Ro1l2omTKB0RcACYIFlTu1oz+gw7nU8SSmwZ/i0qE+Lru/exPrxgakQ0 sxFOJ76WhyuLpalI42dL8dY7oOCLmsvUHwVHU4EyNm8JW1xChjov3n9l7lYLJth69sseGS iYtm/UjkEzSNQWhsD9AYYRBhkAZ14jg= ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=bJIn9ZU7PZ7etdIOd+zNOIQPDD7+2EAFJ22TOCxCgShYJZAm5mHFty39vybG0DGsaQeTG8ZqBnRb5prwafPdMy7xpBtQa/GZi7WzErJ8qMR64RY0ufNPMK0+15EJnb60vuPtxjpp2mPxug8J8DQIn4xdXyOz8JT3GjKwjVrlYv4mf9mFyBZVqFrH0RdHcayPqf3OEF3kbZzq2RwTeCgCTcqdre/RtYoZKmPe3+sfwhLnWz3wnfQa+T12MZb7sB/PgqhcWCQ78JPAf1hPiJAzWAmkr/90xLQ+QAFFJw9c4cn2i7QhMJHniRcj2Zx10VhGxtV282yQT4mQKglyOUE0rw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; 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=gw30FNRnuT/3IOLTpvOzD4yIWwEhfvsC73MRHoWUZWA=; b=XHYh0xSDKVBV0ELBm4d0fa9HLwWvNol0VETwCpSoF6OYUnJex02IVh/7I0s0eceT03Bctl5f2PJjktajnHvC7tSDv4+OHvTLiNXHNdZ5/UUYC+VsuOurSfND5OGk9cv044VE3ibSp3bvGwGhLxPUba+xhKjPkYg7FKYf2E1PYk5CwIvUz2uHrEvL5/3EJn27kGxahWSEak6CZeMoFpcTD/RDToYvzElagElH2tv/kqjfF5RQgwRz5NurgMSdteET8UuYd4/B3sM0G8fY0OZQnPvgIxbApHsH8Zwlv9VhZNQulV8ezv8Dlzpue5vHEOGRcjdV6/2feBMnzcm7YMqsQQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.161) smtp.rcpttodomain=suse.cz smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); 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=gw30FNRnuT/3IOLTpvOzD4yIWwEhfvsC73MRHoWUZWA=; b=dyiBHccmyZLrwVVgjsVESINlYqItFYwQTUYG8xxy6ecsh24oDgbpGZ6JzXsMJ1dHreHd8TC2B49Enzdhic9AMsuITl/io+/pZIjMh5C6l6zmyIXkxnlk1wviwh0ztbem7lRQ8zBA3l/5yCqQV+4JjgNs+GHtaT9S2BM6nHTHoMLLTTYM6AMh/3ro/G5Qut+NZbq3pktSR0f8rQJ7BcJ7z/eWPjFzHsgzVpK5UvaRQBcsxTXBBbuMHf3bRlnnfV+/aEuCFdySfc8+F+2ChvTUbxiHHcru2VvQn1CoGluy2xVk4mRQb81IqheGF8czB9pvO4uTAHGJZ4pD83OnJVHYqw== Received: from BN9PR03CA0460.namprd03.prod.outlook.com (2603:10b6:408:139::15) by MW4PR12MB7359.namprd12.prod.outlook.com (2603:10b6:303:219::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6086.17; Fri, 10 Feb 2023 02:10:36 +0000 Received: from BN8NAM11FT039.eop-nam11.prod.protection.outlook.com (2603:10b6:408:139:cafe::40) by BN9PR03CA0460.outlook.office365.com (2603:10b6:408:139::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6086.18 via Frontend Transport; Fri, 10 Feb 2023 02:10:36 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.161) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.161 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.161; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.161) by BN8NAM11FT039.mail.protection.outlook.com (10.13.177.169) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6086.19 via Frontend Transport; Fri, 10 Feb 2023 02:10:35 +0000 Received: from rnnvmail201.nvidia.com (10.129.68.8) by mail.nvidia.com (10.129.200.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.36; Thu, 9 Feb 2023 18:10:24 -0800 Received: from [10.110.48.28] (10.126.231.37) by rnnvmail201.nvidia.com (10.129.68.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.36; Thu, 9 Feb 2023 18:10:24 -0800 Message-ID: <175bbfce-a947-1dcd-1e5f-91a9b8ccfc25@nvidia.com> Date: Thu, 9 Feb 2023 18:10:23 -0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.7.2 Subject: Re: [PATCH 3/5] mm: Do not try to write pinned folio during memory cleaning writeback Content-Language: en-US From: John Hubbard To: Jan Kara , CC: , , David Howells , David Hildenbrand References: <20230209121046.25360-1-jack@suse.cz> <20230209123206.3548-3-jack@suse.cz> <4961eb2d-c36b-d6a5-6a43-0c35d24606c0@nvidia.com> In-Reply-To: <4961eb2d-c36b-d6a5-6a43-0c35d24606c0@nvidia.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [10.126.231.37] X-ClientProxiedBy: rnnvmail201.nvidia.com (10.129.68.8) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT039:EE_|MW4PR12MB7359:EE_ X-MS-Office365-Filtering-Correlation-Id: 5328e3d9-d4db-4f26-e3c7-08db0b0bff6e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230025)(4636009)(39860400002)(346002)(396003)(376002)(136003)(451199018)(46966006)(40470700004)(36840700001)(478600001)(186003)(47076005)(426003)(26005)(336012)(40460700003)(16526019)(316002)(83380400001)(16576012)(54906003)(2616005)(66899018)(53546011)(31686004)(110136005)(70586007)(70206006)(4326008)(41300700001)(7636003)(5660300002)(36860700001)(8936002)(82740400003)(8676002)(31696002)(356005)(86362001)(40480700001)(82310400005)(36756003)(2906002)(43740500002);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Feb 2023 02:10:35.9029 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 5328e3d9-d4db-4f26-e3c7-08db0b0bff6e X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT039.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR12MB7359 X-Stat-Signature: csjkjggs1p7gdtiymm8s1xrgeucc6ijo X-Rspam-User: X-Rspamd-Queue-Id: 1481C4000C X-Rspamd-Server: rspam06 X-HE-Tag: 1675995038-647140 X-HE-Meta: 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 Fe7iqTnF u/HWg+8lWKkJ9xQqaRvIV8i/1E6uFzrEhHXX2IvNgpRIHu/PQEeqoIiPgA/6U7B+S1n5AE3FbIARJSdLHhVdWFJv+JRa9oWtWQAyJM3JC0TxtO/BgbKLcVJLDCnqATXp7bGqGBnVV3UqDAx71Amkc2wHikACq1VxhhSW2YYqUoEl3jwZcYLLPgglXP+1X6V7NW1uOt61x+0qftf4uInRK0sJlotrso1skyHmndzi5BHnnVIee8xyUlVakHdKFKMTHpaFZ//IZpgZQn3om9MtnV2Injh7qNw6HLaMSSe3Sufiko7k4r0SPyDnf/qBk5WvRSajrsFs33v/9+BaWi9UqwIUg0QZRmFNhV2xN 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: On 2/9/23 17:54, John Hubbard wrote: > On 2/9/23 04:31, Jan Kara wrote: >> When a folio is pinned, there is no point in trying to write it during >> memory cleaning writeback. We cannot reclaim the folio until it is >> unpinned anyway and we cannot even be sure the folio is really clean. >> On top of that writeback of such folio may be problematic as the data >> can change while the writeback is running thus causing checksum or >> DIF/DIX failures. So just don't bother doing memory cleaning writeback >> for pinned folios. >> >> Signed-off-by: Jan Kara >> --- >>   fs/9p/vfs_addr.c            |  2 +- >>   fs/afs/file.c               |  2 +- >>   fs/afs/write.c              |  6 +++--- >>   fs/btrfs/extent_io.c        | 14 +++++++------- >>   fs/btrfs/free-space-cache.c |  2 +- >>   fs/btrfs/inode.c            |  2 +- >>   fs/btrfs/subpage.c          |  2 +- > Oh, and one more fix, below, is required in order to build with my local test config. Assuming that it is reasonable to deal with pinned pages here, which I think it is: diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c index 9c759df700ca..c3279fb0edc8 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c @@ -313,7 +313,7 @@ void __shmem_writeback(size_t size, struct address_space *mapping) if (!page) continue; - if (!page_mapped(page) && clear_page_dirty_for_io(page)) { + if (!page_mapped(page) && clear_page_dirty_for_io(&wbc, page)) { int ret; SetPageReclaim(page); thanks, -- John Hubbard NVIDIA