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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 F2CDAC43441 for ; Wed, 28 Nov 2018 10:07:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C3BA92086B for ; Wed, 28 Nov 2018 10:07:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C3BA92086B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-block-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727662AbeK1VIS (ORCPT ); Wed, 28 Nov 2018 16:08:18 -0500 Received: from mx1.redhat.com ([209.132.183.28]:12414 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727413AbeK1VIR (ORCPT ); Wed, 28 Nov 2018 16:08:17 -0500 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 77A804E92A; Wed, 28 Nov 2018 10:07:11 +0000 (UTC) Received: from ming.t460p (ovpn-8-25.pek2.redhat.com [10.72.8.25]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C658819747; Wed, 28 Nov 2018 10:07:06 +0000 (UTC) Date: Wed, 28 Nov 2018 18:07:01 +0800 From: Ming Lei To: Christoph Hellwig Cc: Jens Axboe , Keith Busch , linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, Martin Petersen , Bart Van Assche Subject: Re: [PATCHv4 0/3] scsi timeout handling updates Message-ID: <20181128100659.GA16495@ming.t460p> References: <20181126165430.4519-1-keith.busch@intel.com> <20181128021959.GG11128@ming.t460p> <20181128070010.GA20369@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181128070010.GA20369@lst.de> User-Agent: Mutt/1.9.1 (2017-09-22) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Wed, 28 Nov 2018 10:07:11 +0000 (UTC) Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Wed, Nov 28, 2018 at 08:00:10AM +0100, Christoph Hellwig wrote: > On Wed, Nov 28, 2018 at 10:20:01AM +0800, Ming Lei wrote: > > On Mon, Nov 26, 2018 at 10:33:32AM -0700, Jens Axboe wrote: > > > On 11/26/18 9:54 AM, Keith Busch wrote: > > > > The iterative update to the previous version taking into account review > > > > comments. > > > > > > > > Background: > > > > > > > > The main objective is to remove the generic block layer's lock prefix > > > > currently required to transition a request to its completed state by > > > > shifting that expense to lower level drivers that actually need it, > > > > and removing the software layering violation that was required to use > > > > that mechnaism. > > > > > > Thanks Keith, added for 4.21. > > > > Hi Jens & Keith, > > > > Seems this patchset causes the following kernel panic, since not see > > this issue with commit 4ab32bf3305e > > Is this the nvme target on top of null_blk? Yes. Thanks, Ming