From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner+w=401wt.eu-S1755580AbYDTVvk@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1755580AbYDTVvk (ORCPT <rfc822;w@1wt.eu>);
	Sun, 20 Apr 2008 17:51:40 -0400
Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751875AbYDTVv3
	(ORCPT <rfc822;linux-kernel-outgoing>);
	Sun, 20 Apr 2008 17:51:29 -0400
Received: from smtp1.linux-foundation.org ([140.211.169.13]:41423 "EHLO
	smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK)
	by vger.kernel.org with ESMTP id S1751703AbYDTVv3 (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Sun, 20 Apr 2008 17:51:29 -0400
Date: Sun, 20 Apr 2008 14:50:20 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Arjan van de Ven <arjan@infradead.org>
Cc: andi@firstfloor.org, joern@logfs.org, w@1wt.eu, lkml@rtr.ca,
       bunk@kernel.org, alan@lxorguk.ukuu.org.uk, shawn.bohrer@gmail.com,
       mingo@elte.hu, linux-kernel@vger.kernel.org, tglx@linutronix.de
Subject: Re: x86: 4kstacks default
Message-Id: <20080420145020.217ecdd4.akpm@linux-foundation.org>
In-Reply-To: <20080420115053.7151ef8d@laptopd505.fenrus.org>
References: <20080420085104.GG1595@cs181133002.pp.htv.fi>
	<20080420103611.2c0d3519@the-village.bc.nu>
	<20080420104444.GI1595@cs181133002.pp.htv.fi>
	<87y778aezh.fsf@basil.nowhere.org>
	<20080420124717.GH8474@1wt.eu>
	<480B44C4.4060104@rtr.ca>
	<20080420133857.GB26536@1wt.eu>
	<480B50F1.8040309@firstfloor.org>
	<20080420164133.GB20694@logfs.org>
	<480B7B1E.7010707@firstfloor.org>
	<20080420174249.GC20694@logfs.org>
	<480B8932.1090308@firstfloor.org>
	<20080420115053.7151ef8d@laptopd505.fenrus.org>
X-Mailer: Sylpheed version 2.2.4 (GTK+ 2.8.19; i686-pc-linux-gnu)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

> On Sun, 20 Apr 2008 11:50:53 -0700 Arjan van de Ven <arjan@infradead.org> wrote:
> On Sun, 20 Apr 2008 20:19:30 +0200
> Andi Kleen <andi@firstfloor.org> wrote:
> 
> > In theory if you e.g. convert a recursive algorithm
> > to iterative you might save some cache foot print, but I don't
> > think that really happens in kernel code.
> > 
> 
> this is what Al did for the symlink recursion thing, and Jens did for the block layer...
> so yes this conversion does happen for real.

md got mostly-fixed too, via Neil's patch which sat in -mm for nearly two
years.