From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757541Ab0ICVYH (ORCPT ); Fri, 3 Sep 2010 17:24:07 -0400 Received: from mx1.redhat.com ([209.132.183.28]:1025 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753962Ab0ICVYF (ORCPT ); Fri, 3 Sep 2010 17:24:05 -0400 Message-ID: <4C816760.4010807@redhat.com> Date: Fri, 03 Sep 2010 17:23:44 -0400 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.8) Gecko/20100806 Fedora/3.1.2-1.fc13 Lightning/1.0b2pre Thunderbird/3.1.2 MIME-Version: 1.0 To: Andrew Morton CC: Minchan Kim , linux-mm , LKML , Venkatesh Pallipadi , Ying Han , KOSAKI Motohiro , Johannes Weiner Subject: Re: [PATCH] vmscan: prevent background aging of anon page in no swap system References: <1283096628-4450-1-git-send-email-minchan.kim@gmail.com> <20100903140649.09dee316.akpm@linux-foundation.org> In-Reply-To: <20100903140649.09dee316.akpm@linux-foundation.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/03/2010 05:06 PM, Andrew Morton wrote: > We don't have any quantitative data on the effect of these excess tlb > flushes, which makes it difficult to decide which kernel versions > should receive this patch. > > Help? I assume it is a relatively small performance optimization, as well as a nice code cleanup ... so probably no real hurry to get it upstream (next time you send Linus mm patches?), and no real reason to have it backported to a -stable kernel either. -- All rights reversed