From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7C2D9C43387 for ; Thu, 20 Dec 2018 18:19:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5B27E218D9 for ; Thu, 20 Dec 2018 18:19:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388734AbeLTSTu (ORCPT ); Thu, 20 Dec 2018 13:19:50 -0500 Received: from smtp.infotech.no ([82.134.31.41]:48660 "EHLO smtp.infotech.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729178AbeLTSTu (ORCPT ); Thu, 20 Dec 2018 13:19:50 -0500 Received: from localhost (localhost [127.0.0.1]) by smtp.infotech.no (Postfix) with ESMTP id 96B87204191; Thu, 20 Dec 2018 19:19:48 +0100 (CET) X-Virus-Scanned: by amavisd-new-2.6.6 (20110518) (Debian) at infotech.no Received: from smtp.infotech.no ([127.0.0.1]) by localhost (smtp.infotech.no [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id dCLIx0k7T2Xx; Thu, 20 Dec 2018 19:19:42 +0100 (CET) Received: from [192.168.48.23] (host-184-164-16-103.dyn.295.ca [184.164.16.103]) by smtp.infotech.no (Postfix) with ESMTPA id 310B820418E; Thu, 20 Dec 2018 19:19:41 +0100 (CET) Reply-To: dgilbert@interlog.com Subject: Re: [PATCH] bsg: deprecate BIDI support in bsg To: Jens Axboe , Christoph Hellwig Cc: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org References: <20181219143934.3910-1-hch@lst.de> <20181220071254.GB9895@lst.de> From: Douglas Gilbert Message-ID: <43c65430-2dbe-9063-3dd4-4941751c323e@interlog.com> Date: Thu, 20 Dec 2018 13:19:40 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-CA Content-Transfer-Encoding: 7bit Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 2018-12-20 12:09 p.m., Jens Axboe wrote: > On 12/20/18 12:12 AM, Christoph Hellwig wrote: >> On Wed, Dec 19, 2018 at 04:23:14PM -0700, Jens Axboe wrote: >>> On 12/19/18 7:39 AM, Christoph Hellwig wrote: >>>> Besides the OSD command set that never got traction, the only SCSI >>>> command using bidirectional buffers is XDWRITEREAD in the 10 and 32 >>>> byte variants, which is extremely esoteric. It probably doesn't make >>>> sense to keep the support code around just for that, so start >>>> deprecating the support. >>> >>> Acked-by: Jens Axboe >> >> You are the bsg maintainer, so I expected you to pick it up :) > > OK - did you to amend the commit message to reflect the death of > XDWRITEREAD as well? > It was made obsolete in _draft_ sbc4r15.pdf according to my notes. It is not "dead", not until SBC-4 is ratified. Until then, SBC-3 is the current SCSI "block" device standard and it is there as a non-mandatory command. Doug Gilbert