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Thu, 14 Oct 2021 06:28:53 +0000 (UTC) Received: from mimecast-mx02.redhat.com (mimecast05.extmail.prod.ext.rdu2.redhat.com [10.11.55.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 0373F2026D5D for ; Thu, 14 Oct 2021 06:28:50 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-1.mimecast.com [207.211.31.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 104A08001EA for ; Thu, 14 Oct 2021 06:28:50 +0000 (UTC) Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-165-OgfdEXQ3McGppIPXUaZeiw-1; Thu, 14 Oct 2021 02:28:48 -0400 X-MC-Unique: OgfdEXQ3McGppIPXUaZeiw-1 Received: by verein.lst.de (Postfix, from userid 2407) id 5DA6768B05; Thu, 14 Oct 2021 08:28:44 +0200 (CEST) Date: Thu, 14 Oct 2021 08:28:44 +0200 From: Christoph Hellwig To: Jens Axboe Message-ID: <20211014062844.GA25448@lst.de> References: <20211013051042.1065752-1-hch@lst.de> MIME-Version: 1.0 In-Reply-To: <20211013051042.1065752-1-hch@lst.de> User-Agent: Mutt/1.5.17 (2007-11-01) X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; 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 2.78 on 10.11.54.4 X-loop: dm-devel@redhat.com Cc: Dave Kleikamp , jfs-discussion@lists.sourceforge.net, Mike Snitzer , linux-nvme@lists.infradead.org, Konstantin Komarov , Song Liu , dm-devel@redhat.com, target-devel@vger.kernel.org, linux-mtd@lists.infradead.org, reiserfs-devel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-nilfs@vger.kernel.org, linux-scsi@vger.kernel.org, OGAWA Hirofumi , linux-ext4@vger.kernel.org, Kees Cook , Josef Bacik , Coly Li , linux-raid@vger.kernel.org, linux-bcache@vger.kernel.org, David Sterba , Ryusuke Konishi , Anton Altaparmakov , linux-block@vger.kernel.org, linux-nfs@vger.kernel.org, Theodore Ts'o , linux-ntfs-dev@lists.sourceforge.net, Jan Kara , linux-fsdevel@vger.kernel.org, Phillip Lougher , ntfs3@lists.linux.dev, linux-btrfs@vger.kernel.org Subject: Re: [dm-devel] don't use ->bd_inode to access the block device size X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 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-Disposition: inline Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit On Wed, Oct 13, 2021 at 07:10:13AM +0200, Christoph Hellwig wrote: > I wondered about adding a helper for looking at the size in byte units > to avoid the SECTOR_SHIFT shifts in various places. But given that > I could not come up with a good name and block devices fundamentally > work in sector size granularity I decided against that. So it seems like the biggest review feedback is that we should have such a helper. I think the bdev_size name is the worst as size does not imply a particular unit. bdev_nr_bytes is a little better but I'm not too happy. Any other suggestions or strong opinions? -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel