From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx152.postini.com [74.125.245.152]) by kanga.kvack.org (Postfix) with SMTP id BD7686B0031 for ; Wed, 5 Jun 2013 16:44:22 -0400 (EDT) Received: by mail-yh0-f47.google.com with SMTP id f73so548733yha.20 for ; Wed, 05 Jun 2013 13:44:21 -0700 (PDT) Message-ID: <51AFA185.9000909@gmail.com> Date: Wed, 05 Jun 2013 16:37:25 -0400 From: KOSAKI Motohiro MIME-Version: 1.0 Subject: Re: [PATCH 1/7] mm: remove ZONE_RECLAIM_LOCKED References: <1370445037-24144-1-git-send-email-aarcange@redhat.com> <1370445037-24144-2-git-send-email-aarcange@redhat.com> In-Reply-To: <1370445037-24144-2-git-send-email-aarcange@redhat.com> Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Andrea Arcangeli Cc: linux-mm@kvack.org, Mel Gorman , Rik van Riel , Hugh Dickins , Richard Davies , Shaohua Li , Rafael Aquini , kosaki.motohiro@gmail.com, Christoph Lameter (6/5/13 11:10 AM), Andrea Arcangeli wrote: > Zone reclaim locked breaks zone_reclaim_mode=1. If more than one > thread allocates memory at the same time, it forces a premature > allocation into remote NUMA nodes even when there's plenty of clean > cache to reclaim in the local nodes. > > Signed-off-by: Andrea Arcangeli You should Christoph Lameter who make this lock. I've CCed. I couldn't find any problem in this removing. But I also didn't find a reason why this lock is needed. -- 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