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=-0.6 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID 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 8F1E7C43142 for ; Tue, 26 Jun 2018 15:36:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 305C426CD2 for ; Tue, 26 Jun 2018 15:36:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=wdc.com header.i=@wdc.com header.b="GQ8dawrk" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 305C426CD2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=wdc.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752072AbeFZPg4 (ORCPT ); Tue, 26 Jun 2018 11:36:56 -0400 Received: from esa3.hgst.iphmx.com ([216.71.153.141]:43525 "EHLO esa3.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751144AbeFZPgy (ORCPT ); Tue, 26 Jun 2018 11:36:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1530027415; x=1561563415; h=subject:to:cc:references:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=bUkh17lpERxvU4JnjJvWq4FBD238xDu4V40k4uewZQ0=; b=GQ8dawrkXP7zoXg4B+E74yeHu/pOdEM9ugaOmhEVbDwOEI3EPjj0mMt0 6rr2mIiux0k5dqXSlvThvzoyQWdljGbp4cNZoXB2sITCUpjLDaiGnajvr Jhr+QF9A1Bnx5Yy0f9L71NMhOKvD46tIgcYhOqQs7tvI2QIU1ORbrqzEL JAJcIHGeWApTyniA7jp9UI9HjTF1k4Ll5FdSW4dMHWW/Lcz1deQeK3TDe M8gf2acajk1yZk4KXkmDZyrSckwhhAtX23kiTkfkI6sWX0i8lJV54JyRM fbgzLbstjpwtRQbtNcHdxBJ1Wbutk4+u/khfxwi6hbF3cIzPPWayzVDaH Q==; X-IronPort-AV: E=Sophos;i="5.51,274,1526313600"; d="scan'208";a="84513042" Received: from h199-255-45-14.hgst.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 26 Jun 2018 23:36:55 +0800 Received: from uls-op-cesaip01.wdc.com ([10.248.3.36]) by uls-op-cesaep01.wdc.com with ESMTP; 26 Jun 2018 08:26:28 -0700 Received: from thinkpad-bart.sdcorp.global.sandisk.com (HELO [10.111.67.248]) ([10.111.67.248]) by uls-op-cesaip01.wdc.com with ESMTP; 26 Jun 2018 08:36:54 -0700 Subject: Re: [PATCH] blk-mq: use mutex_trylock to avoid lock inversion To: "jianchao.wang" , "axboe@kernel.dk" Cc: "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" References: <1529391637-1704-1-git-send-email-jianchao.w.wang@oracle.com> <2409013d789ca266879d24c815b76c2193e23fe3.camel@wdc.com> <2c2003ff1baac05688495677f67239d52f6d9527.camel@wdc.com> <2a1dda06-5c7c-b75b-c1ae-75d1a2a49694@oracle.com> From: Bart Van Assche Message-ID: <1d4d1dc3-7014-4e2a-1ea5-e1446381b404@wdc.com> Date: Tue, 26 Jun 2018 08:36:53 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/25/18 20:47, jianchao.wang wrote: > V2 patch has been posted, would you please take a look at on them ? > https://marc.info/?l=linux-block&m=152965143412927&w=2 Hello Jianchao, Patches 1/3 and 2/3 of that series look fine to me but I don't like the approach of patch 3/3 so please do not expect a review from me for that patch. Thanks, Bart.