From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932769AbXAZKuk (ORCPT ); Fri, 26 Jan 2007 05:50:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932832AbXAZKuk (ORCPT ); Fri, 26 Jan 2007 05:50:40 -0500 Received: from smtp.osdl.org ([65.172.181.24]:55542 "EHLO smtp.osdl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932769AbXAZKuk (ORCPT ); Fri, 26 Jan 2007 05:50:40 -0500 Date: Fri, 26 Jan 2007 02:27:15 -0800 From: Andrew Morton To: Nick Piggin Cc: Aubrey Li , Christoph Lameter , Vaidyanathan Srinivasan , Robin Getz , "Hennerich, Michael" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, dgc@sgi.com Subject: Re: [RFC] Limit the size of the pagecache Message-Id: <20070126022715.afad8716.akpm@osdl.org> In-Reply-To: <45B6DA8B.7060004@yahoo.com.au> References: <45B6CBD9.80600@yahoo.com.au> <6d6a94c50701231951o66487813vcd078fc25e25ffa0@mail.gmail.com> <45B6DA8B.7060004@yahoo.com.au> X-Mailer: Sylpheed version 2.2.7 (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 On Wed, 24 Jan 2007 15:03:23 +1100 Nick Piggin wrote: > > Yeah, it will be failing at order=4, because the allocator won't try > very hard reclaim pagecache pages at that cutoff point. This needs to > be fixed in the allocator. A simple and perhaps sufficient fix for this nommu problem would be to replace the magic "3" in __alloc_pages() with a tunable. From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 26 Jan 2007 02:27:15 -0800 From: Andrew Morton Subject: Re: [RFC] Limit the size of the pagecache Message-Id: <20070126022715.afad8716.akpm@osdl.org> In-Reply-To: <45B6DA8B.7060004@yahoo.com.au> References: <45B6CBD9.80600@yahoo.com.au> <6d6a94c50701231951o66487813vcd078fc25e25ffa0@mail.gmail.com> <45B6DA8B.7060004@yahoo.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Nick Piggin Cc: Aubrey Li , Christoph Lameter , Vaidyanathan Srinivasan , Robin Getz , "Hennerich, Michael" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, dgc@sgi.com List-ID: On Wed, 24 Jan 2007 15:03:23 +1100 Nick Piggin wrote: > > Yeah, it will be failing at order=4, because the allocator won't try > very hard reclaim pagecache pages at that cutoff point. This needs to > be fixed in the allocator. A simple and perhaps sufficient fix for this nommu problem would be to replace the magic "3" in __alloc_pages() with a tunable. -- 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