From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933168AbXCMUQW (ORCPT ); Tue, 13 Mar 2007 16:16:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933177AbXCMUQW (ORCPT ); Tue, 13 Mar 2007 16:16:22 -0400 Received: from waste.org ([66.93.16.53]:45690 "EHLO waste.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933168AbXCMUQV (ORCPT ); Tue, 13 Mar 2007 16:16:21 -0400 Date: Tue, 13 Mar 2007 15:03:14 -0500 From: Matt Mackall To: Jeremy Fitzhardinge Cc: Nick Piggin , Andrew Morton , clameter@sgi.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [QUICKLIST 0/4] Arch independent quicklists V2 Message-ID: <20070313200313.GG10459@waste.org> References: <20070313071325.4920.82870.sendpatchset@schroedinger.engr.sgi.com> <20070313005334.853559ca.akpm@linux-foundation.org> <45F65ADA.9010501@yahoo.com.au> <20070313035250.f908a50e.akpm@linux-foundation.org> <45F685C6.8070806@yahoo.com.au> <20070313041551.565891b5.akpm@linux-foundation.org> <45F68B4B.9020200@yahoo.com.au> <20070313044756.b45649ac.akpm@linux-foundation.org> <45F69287.8040509@yahoo.com.au> <45F6DFA2.9060106@goop.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <45F6DFA2.9060106@goop.org> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 13, 2007 at 10:30:10AM -0700, Jeremy Fitzhardinge wrote: > Nick Piggin wrote: > > However we still have to visit those to-be-unmapped parts of the page > > table, > > to find the pages and free them. So we still at least need to bring it > > into > > cache for the read... at which point, the store probably isn't a big > > burden. > > Why not try to find a place to stash a linklist pointer and link them > all together? Saves the pulldown pagetable walk altogether. Because we'd need one link per mm that a page is mapped in? -- Mathematics is the supreme nostalgia of our time.