From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753693AbaIWF5a (ORCPT ); Tue, 23 Sep 2014 01:57:30 -0400 Received: from mail-qa0-f42.google.com ([209.85.216.42]:42496 "EHLO mail-qa0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752130AbaIWF51 (ORCPT ); Tue, 23 Sep 2014 01:57:27 -0400 Date: Tue, 23 Sep 2014 01:57:24 -0400 From: Tejun Heo To: Christoph Hellwig Cc: Jens Axboe , linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org Subject: Re: boot stall regression due to blk-mq: use percpu_ref for mq usage count Message-ID: <20140923055724.GE11740@mtj.dyndns.org> References: <20140919113815.GA10791@lst.de> <541C8047.80705@kernel.dk> <20140923055554.GA10189@lst.de> <20140923055648.GD11740@mtj.dyndns.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140923055648.GD11740@mtj.dyndns.org> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 23, 2014 at 01:56:48AM -0400, Tejun Heo wrote: > On Tue, Sep 23, 2014 at 07:55:54AM +0200, Christoph Hellwig wrote: > > Jens, > > > > can we simply get these commits reverted from now if there's no better > > fix? I'd hate to have this boot stall in the first kernel with blk-mq > > support for scsi. > > Patches going out right now. And the original implementation was broken, so... -- tejun