From patchwork Mon Mar 4 13:04:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 13580597 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) (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 B2FA73D578; Mon, 4 Mar 2024 13:05:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=205.220.177.32 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709557536; cv=fail; b=uN2tG7sM8dEgeQfaq9dxqGk9styrteY9JtvHIPHk52spIzkvfLl/A9SPo+WDedYTDQQgai9iRFQzRYHZK5ft9d7MsgU/vM/VKdDrdkwzIYZyew0BQCSbZlPrtz+cuY4iU7QDVyBLUoS5kA1QOl0T9RyYAMwdoZ8P6DbkjDcI34Y= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709557536; c=relaxed/simple; bh=UytkUkRUwEIxo66vkcZ7o4fT5aovX3iG7tkjcKfwUCY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=FqC8iRNKhJJJhlGmymMGog7Q7bPg0DBGwHFrtMI8nUmTHUqyB7IhbbXLw5br0FZ6d2vvBHiIVsWyLAGqcjsXb7sbFv6kYKRAOZuMZG5pwBpZjUcqWa0OZtk9JicaT4iYuHzhwryEV0hcO1KUrwEyzqODunXk79/NJQmtJbgxpPw= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none 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=H2yDCtvb; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b=Uod+Qcax; arc=fail smtp.client-ip=205.220.177.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none 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="H2yDCtvb"; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b="Uod+Qcax" Received: from pps.filterd (m0246630.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 424BTBGw006563; Mon, 4 Mar 2024 13:05:19 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : content-transfer-encoding : content-type : mime-version; s=corp-2023-11-20; bh=Kq12PPaf62RHqquV+EQx7IAGXFa73lUNESxSMMKVvhY=; b=H2yDCtvbB0YWyCsmo3aZASz7Wu5C9WEPJYeinN/1XbjinElYRVys2qdhaEJFGphU9WTK GiI3g6T51PkfhsNOw61yHhTROH4QI1Drvnh+JQgRdB2OkDGS2AZz9CCC9xHFH1eNCY6x p7KzQ6EBV9eIdlP2GSL+wDfMTV8kL9XxqkqpjpvywR+n/1n+3Yh//yutRk93Vfu6aUx0 BiiONbBkdjxpuKttsedbh3B/J4U8inIoA7ug10h7DMbRrfiytYqttjHjzo9sXrXByOTw Vp4fyxXNyBAfJ9VsUQLTNNGyLHGdrX8DPqyxstWesjxN40gAdkop0KIkWRUfGIDGNVZ6 TQ== Received: from iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta03.appoci.oracle.com [130.35.103.27]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3wkthebku6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 04 Mar 2024 13:05:19 +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 424BC3nJ017048; Mon, 4 Mar 2024 13:05:18 GMT Received: from nam12-bn8-obe.outbound.protection.outlook.com (mail-bn8nam12lp2169.outbound.protection.outlook.com [104.47.55.169]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3wktj5qpea-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 04 Mar 2024 13:05:18 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=HGkYoDhxNE4Gfq7ch6bilTw6Z6qnCzcax6fBydKTC9gic+REOQpNiRO9jZZ/TZbzjxHXrcObS5cjmkwANoeQIMZzf95jKRfCLPpHTAww18wizmhPHjN8sgBmx03o4Q1kvzP34rJk9/CX53nsGTAzjtOL4DL3oIIzS6PLcqK1+Zr1rlToJsmhJ+lz3t0GTsaTlrHeVQZHYabm1BRBcI84fmwQMfS+QYoO+fOn83ksh6n1WWlV7CnoJdTJFpQOFi/9UBNEv4Q+08trVEVIhzalI3dHrFdn45Y6kql4RETlzUmBway0kxM8DDDyeihG0CtsPGUZ+1ZWsdvdYVlt4gQQ0A== 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=Kq12PPaf62RHqquV+EQx7IAGXFa73lUNESxSMMKVvhY=; b=WoEj5Kkd7j/YbUdlMwemBzjJSvkj17AYBn/vRjPtWvjSwxSpeM3HMoAC4Fee5wxToMEPF5imAuuHu/N5QDmKn4q2tyF9D7ebq0Blr2PwbSN+a7CJFAly9Br+519SPap/X5UuHVmxEQzxb5OojkqFETulxrt3wyTVzxlqK8+PTI0MooziH6tFSPq0F5Zb1phE1I3LCIQ33nLdzzxtXgOgMHnEgA/eCQpTOl0O7wkneTeN1yXn5CNfqZeg71Y7B8DZQa7DJ6SaMUJhrTz8yrlIu4BUzmMMhr15hY6mgqYVs4IRjEWyrYUo9x869TNxITJHX82diMG20kx1jlRsI59xBA== 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=Kq12PPaf62RHqquV+EQx7IAGXFa73lUNESxSMMKVvhY=; b=Uod+QcaxJBskQrNM8vQZ4sC1m1OPwXBE++McweLh9IPZw3iLBk6avn5y2UT+wGI1KdIoflY7/eCQ151BPygagIKiFD5visoOQpumFwlvYfeLJn8jPVpGtF9aPCcWQEdCl6PzEQGksgZX9J0+6+nfDt8zEeQxh7M7CBVSDVP3S/0= Received: from DM6PR10MB4313.namprd10.prod.outlook.com (2603:10b6:5:212::20) by CH3PR10MB7805.namprd10.prod.outlook.com (2603:10b6:610:1bc::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7339.39; Mon, 4 Mar 2024 13:05:17 +0000 Received: from DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::97a0:a2a2:315e:7aff]) by DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::97a0:a2a2:315e:7aff%4]) with mapi id 15.20.7339.035; Mon, 4 Mar 2024 13:05:17 +0000 From: John Garry To: djwong@kernel.org, hch@lst.de, viro@zeniv.linux.org.uk, brauner@kernel.org, jack@suse.cz, chandan.babu@oracle.com, david@fromorbit.com, axboe@kernel.dk Cc: martin.petersen@oracle.com, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, tytso@mit.edu, jbongio@google.com, ojaswin@linux.ibm.com, ritesh.list@gmail.com, linux-block@vger.kernel.org, John Garry Subject: [PATCH v2 09/14] fs: Add FS_XFLAG_ATOMICWRITES flag Date: Mon, 4 Mar 2024 13:04:23 +0000 Message-Id: <20240304130428.13026-10-john.g.garry@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20240304130428.13026-1-john.g.garry@oracle.com> References: <20240304130428.13026-1-john.g.garry@oracle.com> X-ClientProxiedBy: BY3PR03CA0015.namprd03.prod.outlook.com (2603:10b6:a03:39a::20) To DM6PR10MB4313.namprd10.prod.outlook.com (2603:10b6:5:212::20) Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6PR10MB4313:EE_|CH3PR10MB7805:EE_ X-MS-Office365-Filtering-Correlation-Id: 864638a3-0828-402f-8846-08dc3c4bbce5 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: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)(376005);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 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: 864638a3-0828-402f-8846-08dc3c4bbce5 X-MS-Exchange-CrossTenant-AuthSource: DM6PR10MB4313.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Mar 2024 13:05:17.0289 (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: oLfT69SeyeN1ZlNthLoPhbTmhkocGyqLCatcYap+L274A3PmUbnBEKYzA5BqT3a8Naw5tmg6/LPE4W/IQ/+YRg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR10MB7805 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-04_09,2024-03-04_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 bulkscore=0 mlxscore=0 spamscore=0 phishscore=0 suspectscore=0 malwarescore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2403040098 X-Proofpoint-ORIG-GUID: DtBp3BB9H2BKAKNeFeKDzOWsE1LfBMJC X-Proofpoint-GUID: DtBp3BB9H2BKAKNeFeKDzOWsE1LfBMJC Add a flag indicating that a regular file is enabled for atomic writes. This is a file attribute that mirrors an ondisk inode flag. Actual support for untorn file writes (for now) depends on both the iflag and the underlying storage devices, which we can only really check at statx and pwritev2() time. This is the same story as FS_XFLAG_DAX, which signals to the fs that we should try to enable the fsdax IO path on the file (instead of the regular page cache), but applications have to query STAT_ATTR_DAX to find out if they really got that IO path. Signed-off-by: John Garry --- include/uapi/linux/fs.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h index 8828822331bf..aacf54381718 100644 --- a/include/uapi/linux/fs.h +++ b/include/uapi/linux/fs.h @@ -142,6 +142,7 @@ struct fsxattr { #define FS_XFLAG_COWEXTSIZE 0x00010000 /* CoW extent size allocator hint */ /* data extent mappings for regular files must be aligned to extent size hint */ #define FS_XFLAG_FORCEALIGN 0x00020000 +#define FS_XFLAG_ATOMICWRITES 0x00040000 /* atomic writes enabled */ #define FS_XFLAG_HASATTR 0x80000000 /* no DIFLAG for this */ /* the read-only stuff doesn't really belong here, but any other place is