From mboxrd@z Thu Jan 1 00:00:00 1970 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 C94C03FA5ED; Tue, 28 Apr 2026 11:12:03 +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=1777374725; cv=fail; b=dE5dpv2Z8OXRRo35aMbgXfsb61XVx8EDJ4B25s9JyZHQEaA9AZd7Owx98gqZbjid+ZWR8scdfPvClzwqiuGAeensDtNGzPb41IIgMGAAfl0cJo9NAHlPziskiXcQguXzWzGRVGMpRTI0tRdnTQ8Wy9X/txbWF3znk4UjrOUYc/E= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777374725; c=relaxed/simple; bh=9qV9osS6jHuk+JzdpzNB6KvWJ9cum6vYNnGSaV5tU6w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=j3AfuA6436snfpRgW5ljsUJqYOVUDY0+O78OegmYA+qDDgvStMmACW3APCYlBGwAiXrQWf2Madgn4TGvQottKqI0aLtTNZx2ABqJg4jvQ0K49pgingSLD4gVnmSIJvD314h0McJpJ5x1n5RR3JzaPshws+CUX04UI/HXuPpVEqA= 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=QQQRy/CJ; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b=ghpPDMcS; arc=fail smtp.client-ip=205.220.177.32 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="QQQRy/CJ"; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b="ghpPDMcS" Received: from pps.filterd (m0246632.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 63S9luBb2721997; Tue, 28 Apr 2026 11:11:45 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=uXFj4gmCvsSHWzsGEb/WEbCEbwURGCJu+WkMecZHPd8=; b= QQQRy/CJXDPZIZl9R2wFg3Vp1WL7DHHJltQHsPZZXBuxqSdrGtVoK9LzmAITIbTK HykRF80WFK/ZNNncp3wzRxLUdREgc9MuQvRoaBDeZTCQnkUQacpzUmSK01MFmYpc iTAbck6V0WR9XCwoHwSfFS21+C7+vkBmMP9igpkq6p9dSAQ7IkE++dilYdQnK2kl mZmHW1y0KoEDVdPKuZ4U5F4H52WRTsRp0osEMn/284F8OszUQIXiY1BjauH64ev6 z2XJA1+FwBg0FV7DZX5BYFNtmvkEaHbJ7UJh2Hl0N6CWP09j3insesmXbcqIZF9V 16SHDTaEej2qMpAlZgIFYQ== Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.appoci.oracle.com [138.1.114.2]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 4drn7t78e1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 28 Apr 2026 11:11:45 +0000 (GMT) Received: from pps.filterd (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (8.18.1.7/8.18.1.7) with ESMTP id 63SB2te6033460; Tue, 28 Apr 2026 11:11:44 GMT Received: from byapr05cu005.outbound.protection.outlook.com (mail-westusazon11010023.outbound.protection.outlook.com [52.101.85.23]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 4drm2cu2fh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 28 Apr 2026 11:11:43 +0000 (GMT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=ofiEhxk1kP8Op+ev6F1vV1gPgSlSmGuhl6Vxy0etXDSUF/L9VEYaWCk37T89CypyfQC5a2jRUd7/tvnlMK38E7jZZWhqyxqDuRlbDZj/66gRR8lqYc9rpJ7NxwmPtsBM3KbDi6SjxTLDRXVBgBuDdv1+qNcQ7MgULV0bt1FMhJNqA1Xw0rHptUrfJsgPuTtCbhsrNzh/bodDmusBMzsHhdKbo28V3k3gQWCwXG8+4c5CvCGjaMS7LfAggfn7REO1lfn8D6gHG0pT/aU4HOQYz2tkSp0CtvzfW+PvvxwhrCkSCRXfKscCA6iyZhD3kKPV+LUFPSLJ4tHSkOEy2T/vTg== 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=uXFj4gmCvsSHWzsGEb/WEbCEbwURGCJu+WkMecZHPd8=; b=dJGQglA/4rgEeY7RbBQ61ViiT2JO0K0E2bLPRzZvnyic7FloECX4dSAChgbn62ywQFtInO/ANyNQHAcZROJKNR+wlFoRgLslVT2hClcoKR2a8iSOoS2Ir2hdGaIeF4R4/tJxvB7wiDz9a2BET4lm+MBt4EP0wO5k4sx+CV2UabTXsLCLk8ZWozdjKeqa++t2ZnqgPmrIcqNrI3iWbl03qCg+qq9PKqs+oUtyu3Kfxy919LlZrWcD4sO3ONo5uPp+Ij/F/wFddsfR6KApMfotnzyARCmEZi8bGpPt260zJLUazh+ZYsXitKHaAc/sMc3vE5R8QNINhFqoGz+xqlx04A== 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=uXFj4gmCvsSHWzsGEb/WEbCEbwURGCJu+WkMecZHPd8=; b=ghpPDMcSj8b39iLMN0QqJcVTXg1HEfbWfqSHuwlfZnWkSgvOOYfinttB3kU598B18sYFNUluR1P8F2cSXHIucEdzdeh93VgJ3vEGvoJ06EARYh19vIMaFsHiL6qsAVS/Gkf4+YzJ9Vld82wXon6wmpeyFt0q3vHf6xy/UXgntl0= Received: from PH3PPFEDB06D67A.namprd10.prod.outlook.com (2603:10b6:518:1::7d6) by DS0PR10MB6222.namprd10.prod.outlook.com (2603:10b6:8:c0::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9846.26; Tue, 28 Apr 2026 11:11:39 +0000 Received: from PH3PPFEDB06D67A.namprd10.prod.outlook.com ([fe80::234c:e047:21c1:6d16]) by PH3PPFEDB06D67A.namprd10.prod.outlook.com ([fe80::234c:e047:21c1:6d16%8]) with mapi id 15.20.9846.025; Tue, 28 Apr 2026 11:11:39 +0000 From: John Garry To: hch@lst.de, kbusch@kernel.org, sagi@grimberg.me, axboe@fb.com, martin.petersen@oracle.com, james.bottomley@hansenpartnership.com, hare@suse.com, bmarzins@redhat.com, nilay@linux.ibm.com Cc: jmeneghi@redhat.com, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, michael.christie@oracle.com, snitzer@kernel.org, dm-devel@lists.linux.dev, linux-kernel@vger.kernel.org, John Garry Subject: [PATCH v2 13/13] libmultipath: Add mpath_bdev_get_unique_id() Date: Tue, 28 Apr 2026 11:11:05 +0000 Message-ID: <20260428111105.1778008-14-john.g.garry@oracle.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20260428111105.1778008-1-john.g.garry@oracle.com> References: <20260428111105.1778008-1-john.g.garry@oracle.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: PH5P222CA0011.NAMP222.PROD.OUTLOOK.COM (2603:10b6:510:34b::15) To PH3PPFEDB06D67A.namprd10.prod.outlook.com (2603:10b6:518:1::7d6) Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH3PPFEDB06D67A:EE_|DS0PR10MB6222:EE_ X-MS-Office365-Filtering-Correlation-Id: 09d38051-68d4-4137-7551-08dea516eb8c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|366016|376014|1800799024|56012099003|22082099003|18002099003; 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:PH3PPFEDB06D67A.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(7416014)(366016)(376014)(1800799024)(56012099003)(22082099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?lA2BP+sK2O4IdBmdJFt+6CKh+hUJqMvzRb9kLSD6Tq7K43LHwtEInuYfEERs?= =?us-ascii?Q?gbArgJNj8VEwr2rKA0gkSUseQgpovTbxfbodW1qUEwXRm/nlLySVjvk5Ycio?= =?us-ascii?Q?uOx1ZYvWjI2+6+lH3U1YSbzxUu1SW+gKjdsDZa6eZOutr5uoT9uy5wLOSBxz?= =?us-ascii?Q?N/fDd9tbzoVFbFum8ox5nbTgiAQHBcgsnfAQlJJ8iXCKFYWPXnfFzd5Lp5J/?= =?us-ascii?Q?8HWYdhGXa8uJgrJ4l8S4+oqM+MrYEja79gO26BZ5+OvjEa3b2LPNu/d69pkC?= =?us-ascii?Q?GJjZPzu9+zFKOwHthjprLOudgx0+hiW0P0118xgZD1T/wkNcwMQodBRwn0UU?= =?us-ascii?Q?XbSEKQL2RgMhO/FWQqipVvkp84wjP6Z5mPwKo3ogRTrATyXDk2dhaJlNS3hp?= =?us-ascii?Q?zH1V1aCuZOwHY1MtPHVFsOoTLwdgKWAYRgrVrdOlJE/CEsVhQNvDgdxa150P?= =?us-ascii?Q?pX0NYkpiNfiB9IYYK9mQyhFerQDKWaj2ingHbr6USxMx03JjhsvgRSYaDRPz?= =?us-ascii?Q?gj/Kwanv8JXAenP8AjjKbD+nM1mmZ2j1YyrBTFsqCRoU1y3x/vShm4svNI/w?= =?us-ascii?Q?6EjUTsJ7NDQXX4XIzKBOIUQivmLWTaONHdsUD2LPp9Bx3KQdgCznYipe/s8M?= =?us-ascii?Q?xrBoTFWznTQtZbvWziOdJObhrZBrU6UFL4NnvqldfVuzcbCBe5fFTlkklqmu?= =?us-ascii?Q?vCAVfAVpAI+/q4ZF03tvh3JMxIjzpE2RD9ofCNttFLmGKTDCK0yJnkA7XUW4?= =?us-ascii?Q?DR/rMRgWwOxLop3STVDn7EdtH6XYqJIw8PSaXhdlPobhZ4rbd6q/mdSONC9k?= =?us-ascii?Q?9IhFcLTOpiJfYzKrLvDS19KGKAz4td2JZtSaoi6ugbFh+aubzyWdFIbxqWnn?= =?us-ascii?Q?2yXhsJcMkuHc1P7nI9XS3/u4z9GL73CyLQgsdKChvzBq8jsi5/2A2c0g747+?= =?us-ascii?Q?dbGJ47Q+eAISyrVkQEAzcfHLwwecwLWS7wo1RadVx32ti9Y8ZkKzoAoqiGr6?= =?us-ascii?Q?FfMde0tATJ/IAkjczml2LoDPoaW80tj9Zm7vTb/M7aeLWZhB793xBMTUo3Uj?= =?us-ascii?Q?tyN+jx+UQj5ADY4ma8HZh4SmxMlTbkgdW6o9JycgkEIge47EIjKht7Kk7RpY?= =?us-ascii?Q?lGfJ40RJagLW/O3bxDlxCwl9xjLUiwKD2OUBWWwPcJPvYPTU+GxaACOY2yWt?= =?us-ascii?Q?pV03LLSr8iRV6+vjKtKPQdIayfQpxvVwRDeoP9Ksd0jA8x5rXMQYC6T3/39a?= =?us-ascii?Q?cfCMByOHXCu5tONfxrIlfa+H8kL63eC91e1gQNhMXbJ8L6LrPsFbzyqii3fD?= =?us-ascii?Q?q2R/rnPduf8EHLGqn3v9IU05Ps3p9xVnJCg/EVOAEigbQth6ub21zmiW9TJF?= =?us-ascii?Q?0XYGVjQhsOfRyUh1CwUaXGYjoJT8/91Nfg3DIIdm+XGLibPmUp15px8pkda1?= =?us-ascii?Q?cbd4wyHDouZyyTR/xwR2g/hwacPYezA+YWh4+muYdWP25pHtKuZsx447MIjh?= =?us-ascii?Q?0ANb2dj01md2iwRtnyddBaAinAooVg4DxBFOE2OOYjAALXUfVR86Qn+PvIfI?= =?us-ascii?Q?gm3DL7173MNnE+GhIbvlRqMRvxGaXVFnB8d0UZ1CfgXIZ0nAdv/PN2K5hhNi?= =?us-ascii?Q?2LjYH6QZiSCHjvxUdusLNOj/reVexWvQ3T8+umya/h6eCfIBZypdki8+US0E?= =?us-ascii?Q?IHkU9Vi8POetMF85Vzh3CoM/Vh4iBpK0LDiPGYQMBDI+KZFOgl+jYK0KUzYM?= =?us-ascii?Q?lK0AULfytauplEiRSFfsHOkUrqgvicE=3D?= X-Exchange-RoutingPolicyChecked: VMogZj/36sWAXqqDYC/jYi+wG86e7nxwxLzfMMSiN8URadkXKroAjFudr2EWjOD9PvJMkirvMQqeK7IuGdbpuLpnKaBFS8WQhN2Pv67WlCJSg8RwJLV5xVeL2o0f4dAXQZ6mq7wdQtZbEQ5NBCi+F9Qbya3hIZmeqv6K3SGVLZuo4jjda8v0htISV4ykzHHmo41H2i/s8WajQwl8lRu/BmHWf/JFm6CBXeGey8EpuA8FFKP57LbbcJrsLqDcx5mhW6UIOz5jNJ/ub+G5aeSXkCf+WxLlfgF2yf8Vcpp6SiRpgkWovHPV123NYPMnd+rDa9/me9WWZKfNwOWyb/uXrA== X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: FYzdSDXTW/RGACBSdeuQtPID7pN1upLwZ3pQGkqi5eWJkX5oZOtw0CILCYvTzG0V+rjANMo6N+9HiD+KYYg3KLrt4OfWHgBLW6c7PqruV3+Z16VBMcAUsjPZmhaErPROhhY1MNIwyAwsMO20VHUB1yl1C4KGi+vlka7oKU/wBs5iAV29k5Hs7JeBUg66fdpH8Be4DOT7SeX9+MBw/Wz2X/MS20fKBkqqToJTKbYKTLMkYZfEe1CAQyIawGu3b7yu/r3ZXvs8cTblDyrC94Cbmh5d+91xiUKDno+p5T2UoT0lnL87LZZ6vWSfef/n6CSn+r3DMaCA/ykx/mjEoaZDkFNYcl1QcNEjuoGLzDOIGAQHRmG/pXuU0NhVoiJbURwh3WxovfIosEEkqY+Irskaw1TtVeQIqT3dFHdYcmFCz7f2cWXVsefukHhy2Jwu5fGrhIzD3MI0khXuJD8EOhajQESbaiSVXwHIbeFLbsqNx+WAXtYwd07wYAwNN5ttl9kPAlleAAWiM4eDXl9HT8Y09VzlGoVtzamcWF0+MTLXatL4t2BbCJSP2RoP7XCkP0me28JySbIS9gvxLyoqU/h/zSjghHexiOVmsoZh6bwi5tI= X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 09d38051-68d4-4137-7551-08dea516eb8c X-MS-Exchange-CrossTenant-AuthSource: PH3PPFEDB06D67A.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Apr 2026 11:11:39.4927 (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: Xf3fWED0dZMdK1onYU9uF4M3+/fGw4FE4TdM+UvZMzKvAfi1weHiUdTMSwGpc73xFhcWkLANCjWQLge2uGAkrA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR10MB6222 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-28_02,2026-04-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 mlxscore=0 malwarescore=0 adultscore=0 spamscore=0 suspectscore=0 mlxlogscore=999 lowpriorityscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2604200000 definitions=main-2604280100 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDI4MDEwMSBTYWx0ZWRfX7xGhVQqSX7w5 wDq9zS/6Iu5J/ujyrxgxRJFeHkSwaD+RhJqjf5+ExJ8/QRonQ3luEWzzHGjB+/EiIKyaOhwCefw L9Zo16i3zs92RTszAn/DPwcbfxlBmbi4kXqQbhflXbzFp/YoyqQH69Scm+hAsblTBuGr/v6Ods3 uUimA2eBPQ105wCvewaBIDqSkj5T52F/2bilcbr6qI/na999YJPaBFu6borzP6qjq1CYdoCA5Pp mgFefPpYng3BssAohagt49Z31W0h2sl73Np0Am+cB39Dirgu9PBrx2iQkY7fvZYPoKsYjUO5PwM x1L6Tg5ahpISHmg/0uZ2AAoZS6MZoTumU0Ss4Ab2QOLBYDrQt1iNf3SW+QSF+TSA2KIhFpbh/7w E7961Ozi9xaz3d3b2sbtX0nxKirWi0ngHt77SGMaG5UgZFVqMAo5k4ei296AMC08+JZt99WpAS0 KS0nsSb9A3USiKoleOQ== X-Authority-Analysis: v=2.4 cv=QO5YgALL c=1 sm=1 tr=0 ts=69f095f1 cx=c_pps a=XiAAW1AwiKB2Y8Wsi+sD2Q==:117 a=XiAAW1AwiKB2Y8Wsi+sD2Q==:17 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=xqWC_Br6kY4A:10 a=A5OVakUREuEA:10 a=GoEa3M9JfhUA:10 a=VkNPw1HP01LnGYTKEx00:22 a=jiCTI4zE5U7BLdzWsZGv:22 a=3I1J8UUJPc9JN9BFgKH3:22 a=yPCof4ZbAAAA:8 a=iZHHUXBEY3CVZWiF-fYA:9 X-Proofpoint-GUID: c6sP0qBRo_4llWqydpy5ISn7rKzvj7D- X-Proofpoint-ORIG-GUID: c6sP0qBRo_4llWqydpy5ISn7rKzvj7D- Add mpath_bdev_get_unique_id() as a multipath block device .get_unique_id handler. Signed-off-by: John Garry --- lib/multipath.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/lib/multipath.c b/lib/multipath.c index 1228837e5eeac..001a02e6df274 100644 --- a/lib/multipath.c +++ b/lib/multipath.c @@ -490,6 +490,26 @@ static void mpath_bdev_release(struct gendisk *disk) mpath_put_head(mpath_head); } +static int mpath_bdev_get_unique_id(struct gendisk *disk, u8 id[16], + enum blk_unique_id type) +{ + struct mpath_head *mpath_head = mpath_gendisk_to_head(disk); + int srcu_idx, ret = -EWOULDBLOCK; + struct mpath_device *mpath_device; + + srcu_idx = srcu_read_lock(&mpath_head->srcu); + mpath_device = mpath_find_path(mpath_head); + if (mpath_device) { + if (mpath_device->disk->fops->get_unique_id) + ret = mpath_device->disk->fops->get_unique_id( + mpath_device->disk, id, type); + else + ret = 0; /* referencing __dm_get_unique_id() */ + } + srcu_read_unlock(&mpath_head->srcu, srcu_idx); + + return ret; +} static int mpath_bdev_ioctl(struct block_device *bdev, blk_mode_t mode, unsigned int cmd, unsigned long arg) { @@ -730,6 +750,7 @@ const struct block_device_operations mpath_ops = { .submit_bio = mpath_bdev_submit_bio, .ioctl = mpath_bdev_ioctl, .compat_ioctl = blkdev_compat_ptr_ioctl, + .get_unique_id = mpath_bdev_get_unique_id, .report_zones = mpath_bdev_report_zones, .getgeo = mpath_bdev_getgeo, .pr_ops = &mpath_pr_ops, -- 2.43.5