From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Block Subject: Re: [PATCH v4 0/6] Avoid that scsi-mq and dm-mq queue processing stalls sporadically Date: Wed, 12 Apr 2017 12:55:38 +0200 Message-ID: <20170412105538.GB22576@bblock-ThinkPad-W530> References: <20170407181654.27836-1-bart.vanassche@sandisk.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Return-path: Content-Disposition: inline In-Reply-To: <20170407181654.27836-1-bart.vanassche@sandisk.com> Sender: linux-block-owner@vger.kernel.org To: Bart Van Assche Cc: Jens Axboe , linux-block@vger.kernel.org, linux-scsi@vger.kernel.org List-Id: linux-scsi@vger.kernel.org On Fri, Apr 07, 2017 at 11:16:48AM -0700, Bart Van Assche wrote: > Hello Jens, > > The six patches in this patch series fix the queue lockup I reported > recently on the linux-block mailing list. Please consider these patches > for inclusion in the upstream kernel. > Hey Bart, just out of curiosity. Is this maybe related to similar stuff happening when CPUs are hot plugged - at least in that the stack gets stuck? Like in this thread here: https://www.mail-archive.com/linux-block@vger.kernel.org/msg06057.html Would be interesting, because we recently saw similar stuff happening. Beste Grüße / Best regards, - Benjamin Block -- Linux on z Systems Development / IBM Systems & Technology Group IBM Deutschland Research & Development GmbH Vorsitz. AufsR.: Martina Koederitz / Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: AmtsG Stuttgart, HRB 243294