From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 24 Jan 2007 12:13:18 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [RFC] Limit the size of the pagecache Message-Id: <20070124121318.6874f003.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: 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 List-ID: 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org