Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757169AbXERHVr (ORCPT ); Fri, 18 May 2007 03:21:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756142AbXERHVi (ORCPT ); Fri, 18 May 2007 03:21:38 -0400 Received: from smtp2.linux-foundation.org ([207.189.120.14]:33807 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754962AbXERHVh (ORCPT ); Fri, 18 May 2007 03:21:37 -0400 Date: Fri, 18 May 2007 00:19:05 -0700 From: Andrew Morton To: Nick Piggin Cc: Linux Kernel Mailing List , Linux Memory Management List , linux-arch@vger.kernel.org Subject: Re: [rfc] increase struct page size?! Message-Id: <20070518001905.54cafeeb.akpm@linux-foundation.org> In-Reply-To: <20070518040854.GA15654@wotan.suse.de> References: <20070518040854.GA15654@wotan.suse.de> X-Mailer: Sylpheed 2.4.1 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) 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 Content-Length: 658 Lines: 16 On Fri, 18 May 2007 06:08:54 +0200 Nick Piggin wrote: > Many batch operations on struct page are completely random, But they shouldn't be: we should aim to place physically contiguous pages into logically contiguous pagecache slots, for all the reasons we discussed. If/when that happens, there will be a *lot* of locality of reference against the pageframes in a lot of important codepaths. - 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/