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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_SANE_1 autolearn=no 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 E76EBC433E0 for ; Fri, 12 Jun 2020 03:09:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C389020823 for ; Fri, 12 Jun 2020 03:09:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726387AbgFLDJk (ORCPT ); Thu, 11 Jun 2020 23:09:40 -0400 Received: from out30-56.freemail.mail.aliyun.com ([115.124.30.56]:45496 "EHLO out30-56.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726305AbgFLDJk (ORCPT ); Thu, 11 Jun 2020 23:09:40 -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=e01e01358;MF=alex.shi@linux.alibaba.com;NM=1;PH=DS;RN=16;SR=0;TI=SMTPD_---0U.K13Qc_1591931375; Received: from IT-FVFX43SYHV2H.local(mailfrom:alex.shi@linux.alibaba.com fp:SMTPD_---0U.K13Qc_1591931375) by smtp.aliyun-inc.com(127.0.0.1); Fri, 12 Jun 2020 11:09:35 +0800 Subject: Re: [PATCH v12 00/16] per memcg lru lock To: Hugh Dickins Cc: akpm@linux-foundation.org, mgorman@techsingularity.net, tj@kernel.org, khlebnikov@yandex-team.ru, daniel.m.jordan@oracle.com, yang.shi@linux.alibaba.com, willy@infradead.org, hannes@cmpxchg.org, lkp@intel.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, shakeelb@google.com, iamjoonsoo.kim@lge.com, richard.weiyang@gmail.com References: <1591856209-166869-1-git-send-email-alex.shi@linux.alibaba.com> From: Alex Shi Message-ID: Date: Fri, 12 Jun 2020 11:09:33 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: 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 2020/6/12 ÉÏÎç6:26, Hugh Dickins дµÀ: >> ..." > It was well worth exploring, and may help in a few cases; > Johannes's memcg swap simplifications have helped a lot more; > but crashes under rotate_reclaimable_page() show that this series > still does not give enough protection from mem_cgroup_move_account(). > > I'll send a couple of fixes to compaction bugs in reply to this: > with those in, compaction appears to be solid. > Thanks a lot for fixing. I will look into them and try to merge into the patchset. Thanks a lot! Alex