From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:54680 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750991AbdI3JwP (ORCPT ); Sat, 30 Sep 2017 05:52:15 -0400 Date: Sat, 30 Sep 2017 17:51:58 +0800 From: Ming Lei To: Martin Steigerwald Cc: Jens Axboe , linux-block@vger.kernel.org, Christoph Hellwig , linux-scsi@vger.kernel.org, "Martin K . Petersen" , "James E . J . Bottomley" , Bart Van Assche , Oleksandr Natalenko , Johannes Thumshirn , Cathy Avery , linux-kernel@vger.kernel.org, Hannes Reinecke Subject: Re: [PATCH V7 0/6] block/scsi: safe SCSI quiescing Message-ID: <20170930095157.GA28985@ming.t460p> References: <20170930061214.10622-1-ming.lei@redhat.com> <8017332.HWsC7yeG6s@merkaba> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 In-Reply-To: <8017332.HWsC7yeG6s@merkaba> Sender: linux-block-owner@vger.kernel.org List-Id: linux-block@vger.kernel.org Hi Martin, On Sat, Sep 30, 2017 at 11:47:10AM +0200, Martin Steigerwald wrote: > Hi Ming. > > Ming Lei - 30.09.17, 14:12: > > Please consider this patchset for V4.15, and it fixes one > > kind of long-term I/O hang issue in either block legacy path > > or blk-mq. > > > > The current SCSI quiesce isn't safe and easy to trigger I/O deadlock. > > Isn�t that material for -stable as well? Yeah, the patch 6 is CCed to -stable. > > I�d love to see this go into 4.14. Especially as its an LTS release. I am fine with either 4.14 or 4.15, and it is up to Jens. Thanks Ming