From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: Race condition between "read CFQ stats" and "block device shutdown" Date: Thu, 26 Sep 2013 10:20:44 -0400 Message-ID: <20130926142044.GC3482@htj.dyndns.org> References: <5226D661.7070301@suse.de> <20130904160723.GC26609@mtj.dyndns.org> <20130926135443.GC2480@htj.dyndns.org> <5244423A.2050107@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-vc0-f177.google.com ([209.85.220.177]:58761 "EHLO mail-vc0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750958Ab3IZOUr (ORCPT ); Thu, 26 Sep 2013 10:20:47 -0400 Content-Disposition: inline In-Reply-To: <5244423A.2050107@suse.de> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Hannes Reinecke Cc: Anatol Pomozov , Cgroups , Jens Axboe , linux-scsi@vger.kernel.org Hey, Hannes. On Thu, Sep 26, 2013 at 04:18:34PM +0200, Hannes Reinecke wrote: > However, none of the modern devices should be using this lock > switching, so I would just ignore it. > EG SCSI most definitely doesn't use it. The kernel is crashing from it, so I don't think ignoring is an acceptable strategy here. Thanks. -- tejun