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 8824CC25B78 for ; Tue, 28 May 2024 11:09:29 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0386D6B0093; Tue, 28 May 2024 07:09:29 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id F2B7F6B009A; Tue, 28 May 2024 07:09:28 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D7C586B009D; Tue, 28 May 2024 07:09:28 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id B97DC6B0093 for ; Tue, 28 May 2024 07:09:28 -0400 (EDT) Received: from smtpin15.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 63232140B49 for ; Tue, 28 May 2024 11:09:28 +0000 (UTC) X-FDA: 82167533616.15.29B5CE2 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) by imf23.hostedemail.com (Postfix) with ESMTP id F1423140010 for ; Tue, 28 May 2024 11:09:24 +0000 (UTC) Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2023-11-20 header.b=gKo5U1sF; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=aKt6i9ug; dmarc=pass (policy=quarantine) header.from=oracle.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf23.hostedemail.com: domain of john.g.garry@oracle.com designates 205.220.177.32 as permitted sender) smtp.mailfrom=john.g.garry@oracle.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1716894565; 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=cuY5/1wM2KWvOgpMHx7qyelT1QbiE0LvxX6O+e3xnYI=; b=PUkJwARmzpJ2mq2Tet/CdE8Rsoj0rbEDiX/fC2DvJgyzcT5+Z70+tC2WRcJ4C/Hn5yMm3f ioh2rJcELgp7avE4X8BMs8pI6bmFPHhEIsxaC8uhsBdgvLQQVNHnKA+IDa6xkrgycAZzLV i+idFrsHyTIFgS/Q69gEag5gsCocsGI= ARC-Authentication-Results: i=2; imf23.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2023-11-20 header.b=gKo5U1sF; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=aKt6i9ug; dmarc=pass (policy=quarantine) header.from=oracle.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf23.hostedemail.com: domain of john.g.garry@oracle.com designates 205.220.177.32 as permitted sender) smtp.mailfrom=john.g.garry@oracle.com ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1716894565; a=rsa-sha256; cv=pass; b=8OXtiFvSICZ4nDuaJuuuoKeNPNKg+S5cVcN045VDuRobqI7hQg2Sj88TMKfWgL8LhLn1L/ MpJF2r/6w7JMw04LM3nVxiHfBGj825Pxd72wQ4xemfYhT7fW6wFOytADTWJtHFpCVvDh1H 92dTrYzIad7V7BV2pXoJnHEFJqC4Kc4= Received: from pps.filterd (m0333520.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 44S7xHoC003476; Tue, 28 May 2024 11:09:17 GMT DKIM-Signature: =?UTF-8?Q?v=3D1;_a=3Drsa-sha256;_c=3Drelaxed/relaxed;_d=3Doracle.com;_h?= =?UTF-8?Q?=3Dcc:content-transfer-encoding:content-type:date:from:in-reply?= =?UTF-8?Q?-to:message-id:mime-version:references:subject:to;_s=3Dcorp-202?= =?UTF-8?Q?3-11-20;_bh=3DcuY5/1wM2KWvOgpMHx7qyelT1QbiE0LvxX6O+e3xnYI=3D;_b?= =?UTF-8?Q?=3DgKo5U1sFZeqwP7UVz/Q0zFWHFRIIIIo7eWJ7R2s3+M4/0PM8rsi0sSgVHRzx?= =?UTF-8?Q?3EXk2lHY_x3dQkFL95uvYB178bSsvnC5PKwqbrMxhvcyYZN7ngoKVCrcUXuwR2d?= =?UTF-8?Q?g5fb7j7kD+EHh5_3lntKofo6wZRSqYwFEycx6V5Vv9TRzge/Obh5JEp/IbX2pLM?= =?UTF-8?Q?GvaZXqIzRwo/1BsVbFan_pzLG3n+aVKyyf1WMFC0YUGlBve+vfz0P6IrAjhBMpp?= =?UTF-8?Q?FLhvcLoEPXRb70rAHWdUoitwTJ_n0/s8FcN4gpMMPQZOrW6zNk5D6R6NhDr2D0j?= =?UTF-8?Q?7iS9Aa95sp5wiD1SYBhbcMrTTKZlt3Ok_yA=3D=3D_?= Received: from iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta03.appoci.oracle.com [130.35.103.27]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3yb8g9m39w-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 28 May 2024 11:09:17 +0000 Received: from pps.filterd (iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 44SB1Xgj036785; Tue, 28 May 2024 11:09:16 GMT Received: from nam11-dm6-obe.outbound.protection.outlook.com (mail-dm6nam11lp2168.outbound.protection.outlook.com [104.47.57.168]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3yc50wqm2v-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 28 May 2024 11:09:16 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Ht9AHqbK5nWXZ4FJClSG5v1xDfIwiVuVfqfAi9VMSj/RhkCKBAe0FxpkzZ3cfEq8GoQiP09i70ekIqsYc6fGlS6JUDhcrCqZQFm/uWtdK7Ca5eoqlbveyBWpwfMmqwM5asyOtFaibIvQ4UIlHI1RA6dR1S+ESra+z381A1St4bG1hGVMoAraSPG9UHk8bw+t/7HvSJXFHeTc+zVRfDX/pqWTt7Tq8wTzll8py5XywDv2ZkMhbrnwuGDUY+sPVyUNIXmqrSctclbNAi/ZdcsnmJhEY028XLWwOtj8ns5gh34zQJzTCbzJWX0dGgVk2cBrUomPzoWU7QaA/TeqVaWr2g== 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=cuY5/1wM2KWvOgpMHx7qyelT1QbiE0LvxX6O+e3xnYI=; b=bflzRcj4TlcheCAAe07zSPMEKT2h/OnmzZV6T5GL0SjTQ8qNSk2cIln+/WtXzoTbNSx5TmGcN8RKMqI7BPpHANTji3gfggUEBUpwXzEDyAS9BSw4y44qbLN1+Rn3sedF5+erxcqbjEwz1I663BmqPv3kpH/Bgsfhib3n2zZdIeovFXPxZbl9ciWONXcMNNh+pgApMbvRLkAFAE7bB9dpD7PeO4gjoP41o5LJEZbQ5pFEyrhACL+O4inbFTwuR3R7ekKP+NdQmhCnAq3S2P/KgmXESFIqovda2ZYsIKfT+uDHcNd27NO8QxQLLdBVJxDoYFTOCEG7OYTP+1gsppQdIA== 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=cuY5/1wM2KWvOgpMHx7qyelT1QbiE0LvxX6O+e3xnYI=; b=aKt6i9ugFObw60haHq2wCq+CLGRCTz5bLg3f2+1ZxJyOIGGhcpiY75wigXxaP5Lb8Vs7/vq3dB72l0uRtsstOzdosmYaGZrrD/8RjdThj8KDxP+LIJrVscADBOWOsK6lHfVgxnCPqwnopvm4CZZMyTFZAnoZ5Dkl+RFLaWOrmps= Received: from DM6PR10MB4313.namprd10.prod.outlook.com (2603:10b6:5:212::20) by PH7PR10MB6530.namprd10.prod.outlook.com (2603:10b6:510:201::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7611.27; Tue, 28 May 2024 11:09:14 +0000 Received: from DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::4f45:f4ab:121:e088]) by DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::4f45:f4ab:121:e088%5]) with mapi id 15.20.7611.030; Tue, 28 May 2024 11:09:14 +0000 Message-ID: <0b65cccc-b39a-4121-ac0d-52d49c85632b@oracle.com> Date: Tue, 28 May 2024 12:09:02 +0100 User-Agent: Mozilla Thunderbird Subject: Re: [LSF/MM/BPF TOPIC] untorn buffered writes To: Christoph Hellwig Cc: Theodore Ts'o , lsf-pc@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-mm , Luis Chamberlain , "Martin K. Petersen" , Matthew Wilcox , Dave Chinner , linux-kernel@vger.kernel.org References: <20240228061257.GA106651@mit.edu> <9e230104-4fb8-44f1-ae5a-a940f69b8d45@oracle.com> <4c68c88d-496c-4294-95a8-d2384d380fd3@oracle.com> Content-Language: en-US From: John Garry Organization: Oracle Corporation In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: SGXP274CA0004.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:b8::16) To DM6PR10MB4313.namprd10.prod.outlook.com (2603:10b6:5:212::20) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6PR10MB4313:EE_|PH7PR10MB6530:EE_ X-MS-Office365-Filtering-Correlation-Id: bdd700ad-f0f4-486e-41e0-08dc7f069bc2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230031|366007|1800799015|376005; X-Microsoft-Antispam-Message-Info: =?utf-8?B?UVFHTjFuTmdqbTRob3dpM3V0TnJ6aFlFelNLMWN0ZmY5RU9oWkxNUng5Zjlm?= =?utf-8?B?QXhaWjQ3azk1WEhqa1pGbTVNVjV1OFhFOFhRQWJrWFV5SG9DcjA4ekFVamRS?= =?utf-8?B?NWVoSGRZUnJScmQzTStPQTUyQWdySmhhZVkwK0dFdmdyc0cxRWZVL3YzQWZn?= =?utf-8?B?bWRyMnhSZmhMNzFoV0t4UER5Z1daQXhldVVsbEd2SHNXSTEraVZKUm9kcTdG?= =?utf-8?B?cFk1U0lpNzc3Z3kyZGg0U0FTbXgrWFpISTMwM0s2WG9vOGJJb2UxTXdjbFQr?= =?utf-8?B?bE1KZE5Ram91eEpJVVA5SVJPL1g2cUxPQ01OUWpMdTZoSDlMcEFUekFrdVYx?= =?utf-8?B?S3FLR2ZoSlVpa2Q3SW5SZnZ5Wi9OVnFpVUJkUWpoV2JjVkJiTXNJamdXaVQz?= =?utf-8?B?d1h2dkNNVFVjWkg0bnpndnd1bUlST3IzSjBGTWljRHB6ZEV0aCtpUjV5Skh6?= =?utf-8?B?RURIWlUzbkZPSFpaVnZsTmZHWGVhNGpXdzlaOGhaT1I1c0swZUdhaFVIcnFD?= =?utf-8?B?TC82aVRQMFVnTW9BQ1hJakV5MXRRU05scUhMeHFPOVhPaW5MaVpCeFhXKzk0?= =?utf-8?B?YldUOVhia0RxNG1GYzg4Tkh6eDZHMFNKaGtoelp4dHFtNk1ZUFFVWkNRbFo2?= =?utf-8?B?T1NGQzJXQzNlWmxNWWdjUUlZaTZSSDJjWDZwVWZUM2pReVhjY2xDMTU5aHBh?= =?utf-8?B?RTFhNm9yaE0rSVY2T2tIaFpGRG9CTFY3QjlRTXJseHFGd3hYbHZIQ2NmeThS?= =?utf-8?B?QU5la09SMDB6V3hKcTdBNHh5NmUxR20wSXY2WkpMbnNtdGNSY2FBTGErZW9G?= =?utf-8?B?VWt0L3BJZ2hNZGpPUlpPOUQraDNKc1NpeGx1TmVvcjVQL0RndWNSYjkxRE8x?= =?utf-8?B?ZlRMS0szcjZXRkZUanRwZzFmUVNxZGhXaGdXR3k0d2xSZjNoWFI4QzJVeFRl?= =?utf-8?B?RENCamU3bmpwdnVrakFESlQ2M3RONTZRcmE5VGt5dE4reVFlR2x0STlNejRa?= =?utf-8?B?Y1QxZjRSMjJCNFhESzFqcCtvekpleUdKTys1SXk4Z2FIaUc2MlFYOG12NDcz?= =?utf-8?B?RkY1UFdpWCtaZ2pOTnBsUnpKSU1HT1E4SnhNeW5uSFNhVE5WR292UWdJcGNS?= =?utf-8?B?dWlkaU5TMksrLzdkcHlwTkJCWVQySUJRMWJ0Z1Vad25GTEFNeFJUbHduZUd1?= =?utf-8?B?ZGl5RFprZmlSNG5xM2dMQ0ROdjlRWkJXMGYyVEdwWlBPbWIyZHRibmlZS01I?= =?utf-8?B?NVZQRHp5cXk4em9RNjEwSXMwOU1Nd2RjQXJoOGZYeXdQY0tqQjJGVlJReG0x?= =?utf-8?B?QXNhV3FudnltaVRwWjN0NHRmdHdjaFcyTWhJNHJZN2lYSFl6VEU2UHNFTUR6?= =?utf-8?B?ano0VFRRZGlPTGtzRmYwK2pBZDdSTnNvQXlKTEhDSVdrOHVaeFl2RFJvQW5z?= =?utf-8?B?ZDhteklLRVVLNXpCTEQwRkZIUGg3TkhzUkQzbHV5YzBJYWpYdTVkc0RicEJr?= =?utf-8?B?Q3hFZ1Fyb0g1VG13bUtZUk1TTm1tWWZKSWxWWXM5eHVFVGppaWhJMXNqcUow?= =?utf-8?B?R01ZU2Rid3NkL0pMVDJGRjVlNTBKMWVSOTFuWVpXMXJWa3cwTXFNYnErNmNT?= =?utf-8?B?Q3JWUEVWTUtQNHIyTXdjK1pHWXRFTkRVS2NHT2plTEVVY2NOTmx5UFlXYVFn?= =?utf-8?B?MWRzYytweXgzZWo3b01selU0SVFuakFMeDN3Mk1kTmVzUmxLSmpNNkRRPT0=?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DM6PR10MB4313.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(366007)(1800799015)(376005);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?YmpTT3FLNW13SGUzZW14emxQdGxmQVBVVVA4MzJsZEUwMkNzTlhSRlVKZDRm?= =?utf-8?B?WStUOTcvYksySUFnVERiVFhSNDBTVE5WUzhWZHVyZjdmVHlTQTQveTRWZTlZ?= =?utf-8?B?TnJXSkQ2VVJ5eUZrbDZ2VWdUK1YydTZ2RGUwNHNCZW5BcVhCZDVRaFY1RW1Z?= =?utf-8?B?eHZpQktTYUIwbXROeCtQSFY1VDc4QzNMbVpkTkhuUzBiVHRpVzZ3K1RwUXNN?= =?utf-8?B?WWFMZlV2SDVyY3A3L0FJYmZMZGNKdGwzOUFFTXFwSDlJWVp5cER1ZVo1WCtC?= =?utf-8?B?bHZzcG1KaUc5bTlaRHFnUGQ3TjBpSTVDSFpON0ZOci9XbWxPQjdlWUoralVJ?= =?utf-8?B?YjB2UlhLeldOZVgxNEkzbnVaVzhiVDNUUk5WczlMeVhsTXNya0poSmhkSzdL?= =?utf-8?B?UXJNaDduSllVYTdScDNSaW03MTYxc01EdTNEa0srcC8vcXNzNUQvekMvZ3c1?= =?utf-8?B?WkQ0UXE3eUkvTWE5aTYzcitQcjRqYjN2ODVKbXZpekp5VUtWZ2hSRkJqcVdi?= =?utf-8?B?bXlGWkxuY2JzZVhvWi9VT1RhYVFucmJ2dW1TNGV4RlB0ald0b05lR01pcXY4?= =?utf-8?B?dkxkeTAvOVI5TjZjL2l3VGxUZ1FIV3g0SzY3NncySHYra2xIS2E0bVJRWXN3?= =?utf-8?B?ME42SWFXMGJmSWUwUCtWVmp3N1psNEZYaVdGQnI1aDR5ZmVxUklJNkZlcTVh?= =?utf-8?B?STZkazJyNWk4NEtQSkRPYXJQaDdiZmd5Z1NYYWowNlQ1bG9obWNZNVp2am1V?= =?utf-8?B?Y0xwakRLRWVNRHVWb0o3VGMwTDBuN2hDb3pHODRaR3lOUWlkVFNubXZmeDBK?= =?utf-8?B?OGc2ckoyVm42d2IwVnlhV3NJQmFIdFprL0tjemxqbEhUbzJSQWFUdXhaMWhD?= =?utf-8?B?NGtCdU42d3dvUkVITHhaMnllQWRQSVladSs0SGNuaWo3UHhNajBleStBTjR4?= =?utf-8?B?d2J0Uk1tVXgrL1ZvNFlpUlhoelBJaUNFTUV2MkFRY2ZGcVFCUms3d0h2MExW?= =?utf-8?B?WEhJaThHUHdxWXVUaUpmenc1UkZuT0hnSm5uamNwNmIyZ0NYbm1hTTljR25h?= =?utf-8?B?RDFIWFRhU0xZbVUwQUNJYWJBdGxIQTRLak1DK3lYYjJ2NHZsaDV5aXRPbi9C?= =?utf-8?B?Yjk2a2grV0lyZ3FiTmg5V2FhSW1Oek1GK2JYWVYvRHB0NjJGMEZmNlBadE5I?= =?utf-8?B?K0VNSGZkaVFrRkFTaytmdlRiZlZ2VGZqb3ZCbFM1aFppdHlKdkpZYzhQWXR4?= =?utf-8?B?VVh3S1I2cUhhNnRLWXVwSnNKMzhJdi9lZUkzNWVRa0E1NTBqZERtb29EUnpH?= =?utf-8?B?Rlhvb3BSSjRTL0ZKcHZoK2V5UjI5ekJpbHJ3MUViWjVoak1DMEJTcmcyRllD?= =?utf-8?B?QjVsc3dLdWRsenRlemlnV1Q4b0w2RWpBWklBakk4L0UydFQwZ3pqeWlrZkxF?= =?utf-8?B?NUZuSTd5Q0tzL0NHWXlSUFlid29kek1McENWcjVaazJxcTI4bkxvbzMrcUFB?= =?utf-8?B?TG1yemplVTVnVCtJSDZvcHpWU0ZRUjRSdVZ2OEx0TXlhZ1ZrOG1ZWlI5SS9C?= =?utf-8?B?dDBRUnZzMittY2ZIajhhWlQyRHJsQ21oSWNybFo0U2xveGRhVkhpdnVaS0x3?= =?utf-8?B?QldkL0t0OThRclF5TGlwQ3BreHRDL0E2dDBBVlFtOWdkWHlzZE1FUS8xYmtt?= =?utf-8?B?WjdlMTgvZncvSklkUHErV05hOGlsUXNIL3NabEZvc2dXOUVOVDRqWStmM1Q2?= =?utf-8?B?Vy9NbEhtN2ZFdVlKODJYdzI2bjJ4OU1PRjZLYXRldm1nRjB0TkZyeHg3NTU5?= =?utf-8?B?allWKysxeXNKUkRIRTFqOEdwSFZ2MXN3dkZXMWp0cVV3MHIzLyttZDZvRUdP?= =?utf-8?B?andwM0swV29VUk5GcmM3amxuY242WlVURmFRd1J4L3paK3JSbS9lb0hoN1Ju?= =?utf-8?B?eDZ6Skx4Q0ppOUgzS3g5bHZUUnJYZzhwVWo0WlpjTmUwN01pdFd1aHNBaTY2?= =?utf-8?B?QmtReE9adDM1OVRIajNUYjh2RW1iMW04YnFXV2VOWTFmTFk0YzhWZ1V4WmNt?= =?utf-8?B?SDc2YTdnM3ZhVUx5Y0VaQmQ1L01iYjczMUZnWk9GeVljR0ZHK1cvM2lKcVpY?= =?utf-8?B?SGMyUzFNaHVaZUdoWU4rSGFrU1l3d2ZiQitNQUU5MnE1RGswK1BHYWQ2YVFD?= =?utf-8?B?TXc9PQ==?= 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: bdd700ad-f0f4-486e-41e0-08dc7f069bc2 X-MS-Exchange-CrossTenant-AuthSource: DM6PR10MB4313.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 May 2024 11:09:14.2454 (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: cmjciTmXh6UE5bUZnte2EhWT4MXb+tl3jD8fsvn8kIyFGsJkOFVIc4lJVJrSaTMeNqieYjpJDs6oyUrgBgf4Sg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR10MB6530 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.650,FMLib:17.12.28.16 definitions=2024-05-28_07,2024-05-28_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 malwarescore=0 spamscore=0 adultscore=0 mlxscore=0 phishscore=0 suspectscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2405010000 definitions=main-2405280084 X-Proofpoint-GUID: qAEU5tOMbd6iKkLY5Jnlk0O_ZAuQBrCA X-Proofpoint-ORIG-GUID: qAEU5tOMbd6iKkLY5Jnlk0O_ZAuQBrCA X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: F1423140010 X-Stat-Signature: emdukha9nki3m4hau1egj88ytpwp5cfb X-HE-Tag: 1716894564-707526 X-HE-Meta: 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 mgU4US6q 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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: On 28/05/2024 11:57, Christoph Hellwig wrote: > On Tue, May 28, 2024 at 10:21:15AM +0100, John Garry wrote: >> If so, I am not sure if a mmap interface would work for DB usecase, like >> PostgreSQL. I can ask. > Databases really should be using direct I/O for various reasons. And if > Postgres still isn't doing that we shouldn't work around that in the > kernel. As I understand, direct IO support for that DB is a work-in-progress, but if and ever it is completed I don't know. Regardless, my plan is to work towards direct IO kernel support now.