From mboxrd@z Thu Jan 1 00:00:00 1970 From: "hch@lst.de" Subject: Re: split scsi passthrough fields out of struct request V2 Date: Sat, 28 Jan 2017 09:29:00 +0100 Message-ID: <20170128082900.GE4728@lst.de> References: <1485365126-23210-1-git-send-email-hch@lst.de> <1485552454.4267.29.camel@sandisk.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1485552454.4267.29.camel@sandisk.com> Sender: linux-raid-owner@vger.kernel.org To: Bart Van Assche Cc: "hch@lst.de" , "axboe@fb.com" , "linux-scsi@vger.kernel.org" , "linux-raid@vger.kernel.org" , "dm-devel@redhat.com" , "linux-block@vger.kernel.org" , "snitzer@redhat.com" , "j-nomura@ce.jp.nec.com" List-Id: linux-raid.ids On Fri, Jan 27, 2017 at 09:27:53PM +0000, Bart Van Assche wrote: > Have you considered to convert all block drivers to the new > approach and to get rid of request.special? If so, do you already > have plans to start working on this? I'm namely wondering wheter I > should start working on this myself. Hi Bart, I'd love to have all drivers move of using .special (and thus reducing request size further). I think the general way to do that is to convert them to blk-mq and not using the legacy cmd_size field.