Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936149AbaFHVd0 (ORCPT ); Sun, 8 Jun 2014 17:33:26 -0400 Received: from mail-ve0-f169.google.com ([209.85.128.169]:61250 "EHLO mail-ve0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755009AbaFHVdR (ORCPT ); Sun, 8 Jun 2014 17:33:17 -0400 MIME-Version: 1.0 In-Reply-To: References: <20140607123518.88983301D2@webmail.sinamail.sina.com.cn> Date: Sun, 8 Jun 2014 14:33:16 -0700 X-Google-Sender-Auth: R_RHXYxZMWvzKnDRG4fkwmJlP-k Message-ID: Subject: Re: Interactivity regression since v3.11 in mm/vmscan.c From: Linus Torvalds To: zhdxzx@sina.com Cc: Felipe Contreras , Michal Hocko , linux-kernel , "linux-mm@kvack.org" , Andrew Morton , Mel Gorman , dhillf , "hillf.zj" Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jun 7, 2014 at 11:24 AM, Linus Torvalds wrote: > > Comments? Mel, this code is mostly attributed to you, I'd like to hear > what you think in particular. In the meantime, I've removed the "nr_unqueued_dirty == nr_taken" check for congestion_wait(), since I can't see how it can possibly be sensible, and Felipe confirmed that it fixes his interactivity issue. Nobody commented on it, but let's see if we get reactions to the behavior changing.. Linus -- 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/