From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DAEFEC2BA19 for ; Tue, 21 Apr 2020 09:15:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B8ADA20857 for ; Tue, 21 Apr 2020 09:15:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728308AbgDUJPP (ORCPT ); Tue, 21 Apr 2020 05:15:15 -0400 Received: from out30-44.freemail.mail.aliyun.com ([115.124.30.44]:38471 "EHLO out30-44.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726018AbgDUJPO (ORCPT ); Tue, 21 Apr 2020 05:15:14 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R141e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e01422;MF=alex.shi@linux.alibaba.com;NM=1;PH=DS;RN=11;SR=0;TI=SMTPD_---0TwDXJ5r_1587460498; Received: from IT-FVFX43SYHV2H.local(mailfrom:alex.shi@linux.alibaba.com fp:SMTPD_---0TwDXJ5r_1587460498) by smtp.aliyun-inc.com(127.0.0.1); Tue, 21 Apr 2020 17:14:59 +0800 Subject: Re: [PATCH 07/18] mm: memcontrol: prepare move_account for removal of private page type counters To: Johannes Weiner , Joonsoo Kim Cc: Shakeel Butt , Hugh Dickins , Michal Hocko , "Kirill A. Shutemov" , Roman Gushchin , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@fb.com References: <20200420221126.341272-1-hannes@cmpxchg.org> <20200420221126.341272-8-hannes@cmpxchg.org> From: Alex Shi Message-ID: Date: Tue, 21 Apr 2020 17:13:52 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <20200420221126.341272-8-hannes@cmpxchg.org> Content-Type: text/plain; charset=gbk Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ÔÚ 2020/4/21 ÉÏÎç6:11, Johannes Weiner дµÀ: > When memcg uses the generic vmstat counters, it doesn't need to do > anything at charging and uncharging time. It does, however, need to > migrate counts when pages move to a different cgroup in move_account. > > Prepare the move_account function for the arrival of NR_FILE_PAGES, > NR_ANON_MAPPED, NR_ANON_THPS etc. by having a branch for files and a > branch for anon, which can then divided into sub-branches. > > Signed-off-by: Johannes Weiner Reviewed-by: Alex Shi