From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965646AbXCLLXa (ORCPT ); Mon, 12 Mar 2007 07:23:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965652AbXCLLXa (ORCPT ); Mon, 12 Mar 2007 07:23:30 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:43810 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S965646AbXCLLX2 (ORCPT ); Mon, 12 Mar 2007 07:23:28 -0400 Date: Mon, 12 Mar 2007 04:23:26 -0700 (PDT) Message-Id: <20070312.042326.59467679.davem@davemloft.net> To: clameter@sgi.com Cc: linux-kernel@vger.kernel.org, ak@suse.com, holt@sgi.com, linux-ia64@vger.kernel.org, mpm@selenic.com Subject: Re: [QUICKLIST 0/6] Arch independent quicklists V1 From: David Miller In-Reply-To: References: <20070311020923.19905.49260.sendpatchset@schroedinger.engr.sgi.com> <20070311.135946.28788670.davem@davemloft.net> X-Mailer: Mew version 5.1.52 on Emacs 21.4 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org From: Christoph Lameter Date: Mon, 12 Mar 2007 04:12:32 -0700 (PDT) > On Sun, 11 Mar 2007, David Miller wrote: > > > I'm going to make the radical declaration that it be perhaps often > > better to always initialize page table chunks to all zeros on > > allocation. > > That is the case if most of the page is going to be used soon. If we have > sparse access patterns then not zeroing can avoid uselessly bringing > cachelines in. Good point.