From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx199.postini.com [74.125.245.199]) by kanga.kvack.org (Postfix) with SMTP id 473ED6B0006 for ; Tue, 12 Mar 2013 14:46:46 -0400 (EDT) Received: by mail-pb0-f47.google.com with SMTP id rp2so156429pbb.6 for ; Tue, 12 Mar 2013 11:46:45 -0700 (PDT) Date: Tue, 12 Mar 2013 11:47:18 -0700 From: Greg Kroah-Hartman Subject: Re: [PATCH -v2] device: separate all subsys mutexes (was: Re: [BUG] potential deadlock led by cpu_hotplug lock (memcg involved)) Message-ID: <20130312184718.GA9749@kroah.com> References: <513ECCFE.3070201@huawei.com> <20130312101555.GB30758@dhcp22.suse.cz> <20130312110750.GC30758@dhcp22.suse.cz> <20130312130504.GD30758@dhcp22.suse.cz> <20130312133446.GA3514@kroah.com> <20130312162119.GB5963@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130312162119.GB5963@dhcp22.suse.cz> Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Li Zefan , LKML , cgroups , linux-mm@kvack.org, KAMEZAWA Hiroyuki , Johannes Weiner , Andrew Morton , Jiri Kosina , Peter Zijlstra , Ingo Molnar , Kay Sievers On Tue, Mar 12, 2013 at 05:21:19PM +0100, Michal Hocko wrote: > On Tue 12-03-13 06:34:46, Greg Kroah-Hartman wrote: > > On Tue, Mar 12, 2013 at 02:05:04PM +0100, Michal Hocko wrote: > > > The fix is quite simple. We can pull the key inside bus_type structure > > > because they are defined per device so the pointer will be unique as > > > well. bus_register doesn't need to be a macro anymore so change it > > > to the inline. We could get rid of __bus_register as there is no other > > > caller but maybe somebody will want to use a different key so keep it > > > around for now. > > > > Nice work, but just drop __bus_register(), no one should need to use a > > new key for this type of thing, now that you have added a per-bus_type > > variable. > > OK v2 below. I have also ranamed __key to lock_key. Who is going to take > the patch? I will, thanks. greg k-h -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org