Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932841AbZFLJth (ORCPT ); Fri, 12 Jun 2009 05:49:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758959AbZFLJtS (ORCPT ); Fri, 12 Jun 2009 05:49:18 -0400 Received: from cantor2.suse.de ([195.135.220.15]:41499 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754001AbZFLJtR (ORCPT ); Fri, 12 Jun 2009 05:49:17 -0400 Date: Fri, 12 Jun 2009 11:49:19 +0200 From: Nick Piggin To: Benjamin Herrenschmidt Cc: Pekka Enberg , Linus Torvalds , Linux Kernel list , linux-mm , mingo@elte.hu, cl@linux-foundation.org, akpm@linux-foundation.org Subject: Re: slab: setup allocators earlier in the boot sequence Message-ID: <20090612094918.GH24044@wotan.suse.de> References: <20090612075427.GA24044@wotan.suse.de> <1244793592.30512.17.camel@penberg-laptop> <20090612080236.GB24044@wotan.suse.de> <1244793879.30512.19.camel@penberg-laptop> <1244796291.7172.87.camel@pasglop> <84144f020906120149k6cbe5177vef1944d9d216e8b2@mail.gmail.com> <20090612091304.GE24044@wotan.suse.de> <1244798660.7172.102.camel@pasglop> <20090612093046.GG24044@wotan.suse.de> <1244799865.7172.112.camel@pasglop> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1244799865.7172.112.camel@pasglop> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1086 Lines: 24 On Fri, Jun 12, 2009 at 07:44:25PM +1000, Benjamin Herrenschmidt wrote: > On Fri, 2009-06-12 at 11:30 +0200, Nick Piggin wrote: > > On Fri, Jun 12, 2009 at 07:24:20PM +1000, Benjamin Herrenschmidt wrote: > > Yeah but it doesn't do it in the page allocator so it isn't > > really useful as a general allocator flags tweak. ATM it only > > helps this case of slab allocator hackery. > > I though I did it in page_alloc.c too but I'm happy to be told what I > missed :-) The intend is certainly do have a general allocator flag > tweak. Oh, no I missed that sorry you did. I'd be a bit worried about wanting it as a general allocator tweak. Even suspending IO for suspend/resume... it would be better to try solving that ordering by design and if not then perhaps add something to mm/vmscan.c rather than modify gfp flags all the way down. -- 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/