From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933068AbcFOO2H (ORCPT ); Wed, 15 Jun 2016 10:28:07 -0400 Received: from mx2.suse.de ([195.135.220.15]:34943 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932760AbcFOO2F (ORCPT ); Wed, 15 Jun 2016 10:28:05 -0400 Subject: Re: [PATCH 07/27] mm, vmscan: Remove balance gap To: Mel Gorman , Andrew Morton , Linux-MM References: <1465495483-11855-1-git-send-email-mgorman@techsingularity.net> <1465495483-11855-8-git-send-email-mgorman@techsingularity.net> Cc: Rik van Riel , Johannes Weiner , LKML From: Vlastimil Babka Message-ID: <686f13b7-a80b-d7e2-a057-6e5822866648@suse.cz> Date: Wed, 15 Jun 2016 16:28:03 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1 MIME-Version: 1.0 In-Reply-To: <1465495483-11855-8-git-send-email-mgorman@techsingularity.net> 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 06/09/2016 08:04 PM, Mel Gorman wrote: > The balance gap was introduced to apply equal pressure to all zones when > reclaiming for a higher zone. With node-based LRU, the need for the balance > gap is removed and the code is dead so remove it. > > Signed-off-by: Mel Gorman Acked-by: Vlastimil Babka > --- > mm/vmscan.c | 19 ++++++++----------- > 1 file changed, 8 insertions(+), 11 deletions(-) Also this: include/linux/swap.h:#define KSWAPD_ZONE_BALANCE_GAP_RATIO 100