From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750844AbXCUIox (ORCPT ); Wed, 21 Mar 2007 04:44:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750925AbXCUIox (ORCPT ); Wed, 21 Mar 2007 04:44:53 -0400 Received: from mail.clusterfs.com ([206.168.112.78]:39469 "EHLO mail.clusterfs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750844AbXCUIow (ORCPT ); Wed, 21 Mar 2007 04:44:52 -0400 From: Nikita Danilov MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <17920.61568.770999.626623@gargle.gargle.HOWL> Date: Wed, 21 Mar 2007 11:44:48 +0300 To: Rik van Riel Cc: Linux Kernel Mailing List , linux-mm Subject: Re: [RFC][PATCH] split file and anonymous page queues #3 Newsgroups: gmane.linux.kernel,gmane.linux.kernel.mm In-Reply-To: <46005B4A.6050307@redhat.com> References: <46005B4A.6050307@redhat.com> X-Mailer: VM 7.17 under 21.5 (patch 17) "chayote" (+CVS-20040321) XEmacs Lucid X-SystemSpamProbe: GOOD 0.0000500 150bfdc75b699c394f1fbe28887fa8ad Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Rik van Riel writes: > [ OK, I suck. I edited yesterday's email with the new info, but forgot > to change the attachment to today's patch. Here is today's patch. ] > > Split the anonymous and file backed pages out onto their own pageout > queues. This we do not unnecessarily churn through lots of anonymous > pages when we do not want to swap them out anyway. Won't this re-introduce problems similar to ones due to split inactive_clean/inactive_dirty queues we had in the past? For example, by rotating anon queues faster than file queues, kernel would end up reclaiming anon pages that are hotter (in "absolute" LRU order) than some file pages. Nikita.