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Wed, 9 Nov 2022 03:11:09 +0000 Received: from DM5PR10MB1466.namprd10.prod.outlook.com ([fe80::19f7:e081:85b4:c5df]) by DM5PR10MB1466.namprd10.prod.outlook.com ([fe80::19f7:e081:85b4:c5df%7]) with mapi id 15.20.5791.027; Wed, 9 Nov 2022 03:11:09 +0000 From: Mike Christie To: kbusch@kernel.org, axboe@fb.com, hch@lst.de, sagi@grimberg.me, martin.petersen@oracle.com, jejb@linux.ibm.com, linux-scsi@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org Subject: [PATCH 0/3] block/scsi/nvme: Add error codes for PR ops Date: Tue, 8 Nov 2022 21:11:03 -0600 Message-Id: <20221109031106.201324-1-michael.christie@oracle.com> X-Mailer: git-send-email 2.25.1 X-ClientProxiedBy: CH0PR03CA0034.namprd03.prod.outlook.com (2603:10b6:610:b3::9) To DM5PR10MB1466.namprd10.prod.outlook.com (2603:10b6:3:b::7) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM5PR10MB1466:EE_|PH7PR10MB6033:EE_ X-MS-Office365-Filtering-Correlation-Id: cd8b2b07-0f20-4967-cd43-08dac2000c4f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Currently, we return a -Exyz type of error code if the PR call fails before the drivers can send the command and a device specific error code if it's queued. The problem is that the callers don't always know the device type so they can't check for specific errors like reservation conflicts, or transport errors or invalid operations. These patches add common error codes which callers can check for.