Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030191AbXAXDUX (ORCPT ); Tue, 23 Jan 2007 22:20:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030229AbXAXDUX (ORCPT ); Tue, 23 Jan 2007 22:20:23 -0500 Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:32816 "EHLO fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030191AbXAXDUW (ORCPT ); Tue, 23 Jan 2007 22:20:22 -0500 Date: Wed, 24 Jan 2007 12:13:18 +0900 From: KAMEZAWA Hiroyuki To: Christoph Lameter Cc: aubreylee@gmail.com, svaidy@linux.vnet.ibm.com, nickpiggin@yahoo.com.au, rgetz@blackfin.uclinux.org, Michael.Hennerich@analog.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [RFC] Limit the size of the pagecache Message-Id: <20070124121318.6874f003.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: References: Organization: Fujitsu X-Mailer: Sylpheed version 2.2.0 (GTK+ 2.6.10; i686-pc-mingw32) 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: 853 Lines: 29 one more thing... On Tue, 23 Jan 2007 16:49:55 -0800 (PST) Christoph Lameter wrote: > @@ -1168,6 +1170,11 @@ zonelist_scan: > !cpuset_zone_allowed_softwall(zone, gfp_mask)) > goto try_next_zone; > > + if ((gfp_mask & __GFP_PAGECACHE) && > + zone_page_state(zone, NR_FILE_PAGES) > > + zone->max_pagecache_pages) > + goto try_next_zone; > + I don't prefer to cause zone fallback by this. This may use ZONE_DMA before exhausing ZONE_NORMAL (ia64), ZONE_NORMAL before ZONE_HIGHMEM (x86). Very rapid page allocation can eats some amount of lower zone. Regards, -Kame - 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/