From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751328AbdARHbJ (ORCPT ); Wed, 18 Jan 2017 02:31:09 -0500 Received: from out0-144.mail.aliyun.com ([140.205.0.144]:39957 "EHLO out0-144.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750703AbdARHbI (ORCPT ); Wed, 18 Jan 2017 02:31:08 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R481e4;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e02c03280;MF=hillf.zj@alibaba-inc.com;NM=1;PH=DS;RN=6;SR=0;TI=SMTPD_---.7TP.dF8_1484724134; Reply-To: "Hillf Danton" From: "Hillf Danton" To: "'Vlastimil Babka'" , "'Mel Gorman'" , "'Ganapatrao Kulkarni'" Cc: "'Michal Hocko'" , , References: <20170117221610.22505-1-vbabka@suse.cz> <20170117221610.22505-4-vbabka@suse.cz> In-Reply-To: <20170117221610.22505-4-vbabka@suse.cz> Subject: Re: [RFC 3/4] mm, page_alloc: move cpuset seqcount checking to slowpath Date: Wed, 18 Jan 2017 15:22:13 +0800 Message-ID: <036f01d2715b$97827e80$c6877b80$@alibaba-inc.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQHFQ09NS6piBt3Jppx8qDlvAmfCYwKZ2fPkoUNf1hA= Content-Language: zh-cn Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday, January 18, 2017 6:16 AM Vlastimil Babka wrote: > > This is a preparation for the following patch to make review simpler. While > the primary motivation is a bug fix, this could also save some cycles in the > fast path. > This also gets kswapd involved. Dunno how frequent cpuset is changed in real life. Hillf