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_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 4ED5CC04AAF for ; Tue, 21 May 2019 07:05:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2D7422173E for ; Tue, 21 May 2019 07:05:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725920AbfEUHFP (ORCPT ); Tue, 21 May 2019 03:05:15 -0400 Received: from verein.lst.de ([213.95.11.211]:57853 "EHLO newverein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725809AbfEUHFP (ORCPT ); Tue, 21 May 2019 03:05:15 -0400 Received: by newverein.lst.de (Postfix, from userid 2407) id B529368B05; Tue, 21 May 2019 09:04:52 +0200 (CEST) Date: Tue, 21 May 2019 09:04:52 +0200 From: Christoph Hellwig To: Bob Liu Cc: axboe@kernel.dk, linux-block@vger.kernel.org, hare@suse.com, ming.lei@redhat.com, bvanassche@acm.org, hch@lst.de, martin.petersen@oracle.com, jinpuwang@gmail.com, rpenyaev@suse.de, Roman Pen Subject: Re: [RESEND PATCH v4] blk-mq: fix hang caused by freeze/unfreeze sequence Message-ID: <20190521070452.GA30803@lst.de> References: <20190521032555.31993-1-bob.liu@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190521032555.31993-1-bob.liu@oracle.com> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Tue, May 21, 2019 at 11:25:55AM +0800, Bob Liu wrote: > How to reproduce: > - "insmod null_blk.ko shared_tags=1 nr_devices=0 queue_mode=2" > - cpu0: python Script.py 0; taskset the corresponding process running on cpu0 > - cpu1: python Script.py 1; taskset the corresponding process running on cpu1 > > Script.py: Can you wire this up for blktests? Otherwise looks fine: Reviewed-by: Christoph Hellwig