From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: [PATCH 3/7] dm-mpath: Do not lock up a CPU with requeuing activity Date: Thu, 10 Aug 2017 11:29:11 +0200 Message-ID: <20170810092911.GG24539@lst.de> References: <20170809183216.526-1-bart.vanassche@wdc.com> <20170809183216.526-4-bart.vanassche@wdc.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20170809183216.526-4-bart.vanassche@wdc.com> Sender: stable-owner@vger.kernel.org To: Bart Van Assche Cc: Mike Snitzer , dm-devel@redhat.com, Christoph Hellwig , Laurence Oberman , stable@vger.kernel.org List-Id: dm-devel.ids On Wed, Aug 09, 2017 at 11:32:12AM -0700, Bart Van Assche wrote: > When using the block layer in single queue mode, get_request() > returns ERR_PTR(-EAGAIN) if the queue is dying and the REQ_NOWAIT > flag has been passed to get_request(). Avoid that the kernel > reports soft lockup complaints in this case due to continuous > requeuing activity. Looks good, Reviewed-by: Christoph Hellwig