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Petersen" Organization: Oracle Corporation Message-ID: References: <20220406060516.409838-1-hch@lst.de> <20220406060516.409838-24-hch@lst.de> Date: Wed, 06 Apr 2022 23:30:51 -0400 In-Reply-To: <20220406060516.409838-24-hch@lst.de> (Christoph Hellwig via Ocfs2-devel's message of "Wed, 6 Apr 2022 08:05:12 +0200") X-ClientProxiedBy: SN1PR12CA0105.namprd12.prod.outlook.com (2603:10b6:802:21::40) To PH0PR10MB4759.namprd10.prod.outlook.com (2603:10b6:510:3d::12) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 1be5c088-2287-49ae-6394-08da18470588 X-MS-TrafficTypeDiagnostic: BN6PR10MB1618:EE_ X-Microsoft-Antispam-PRVS: 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; 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Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.85 on 10.11.54.7 Subject: Re: [dm-devel] [Ocfs2-devel] [PATCH 23/27] block: add a bdev_max_discard_sectors helper X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jfs-discussion@lists.sourceforge.net, linux-nvme@lists.infradead.org, virtualization@lists.linux-foundation.org, linux-mm@kvack.org, dm-devel@redhat.com, target-devel@vger.kernel.org, linux-mtd@lists.infradead.org, Christoph Hellwig , drbd-dev@lists.linbit.com, linux-s390@vger.kernel.org, linux-nilfs@vger.kernel.org, linux-scsi@vger.kernel.org, cluster-devel@redhat.com, xen-devel@lists.xenproject.org, linux-ext4@vger.kernel.org, linux-um@lists.infradead.org, nbd@other.debian.org, linux-raid@vger.kernel.org, linux-bcache@vger.kernel.org, ceph-devel@vger.kernel.org, Jens Axboe , linux-block@vger.kernel.org, linux-mmc@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, ntfs3@lists.linux.dev, linux-btrfs@vger.kernel.org Errors-To: dm-devel-bounces@redhat.com Sender: "dm-devel" X-Scanned-By: MIMEDefang 2.85 on 10.11.54.7 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Christoph, > Add a helper to query the number of sectors support per each discard > bio based on the block device and use this helper to stop various > places from poking into the request_queue to see if discard is > supported and if so how much. This mirrors what is done e.g. for > write zeroes as well. Nicer! Reviewed-by: Martin K. Petersen -- Martin K. Petersen Oracle Linux Engineering -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel