Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759667Ab3CGSeA (ORCPT ); Thu, 7 Mar 2013 13:34:00 -0500 Received: from mx1.redhat.com ([209.132.183.28]:60318 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755542Ab3CGSd7 (ORCPT ); Thu, 7 Mar 2013 13:33:59 -0500 Date: Thu, 7 Mar 2013 19:32:14 +0100 From: Oleg Nesterov To: Tejun Heo Cc: Dave Jones , Linux Kernel , Alexander Viro , Li Zefan , cgroups@vger.kernel.org Subject: Re: lockdep trace from prepare_bprm_creds Message-ID: <20130307183213.GA18022@redhat.com> References: <20130306223657.GA7392@redhat.com> <20130307172545.GA10353@redhat.com> <20130307180139.GD29601@htj.dyndns.org> <20130307182140.GF29601@htj.dyndns.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130307182140.GF29601@htj.dyndns.org> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 795 Lines: 21 On 03/07, Tejun Heo wrote: > > On Thu, Mar 07, 2013 at 10:01:39AM -0800, Tejun Heo wrote: > > > > Another possibility is moving cgroup_lock outside threadgroup_lock(), > > which was impossible before because of cgroup_lock abuses in specific > > controller implementations but most of that have been updated and we > > should now be pretty close to being able to make cgroup_lock outer to > > most other locks. Appending a completely untested patch below. > > This probably doesn't help as the dependency involves i_mutex. Confused... why? Oleg. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/