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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 DE813C54FCB for ; Thu, 23 Apr 2020 14:15:27 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 815F72076C for ; Thu, 23 Apr 2020 14:15:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 815F72076C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=i-love.sakura.ne.jp Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id E1DCE8E0005; Thu, 23 Apr 2020 10:15:26 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id DA80B8E0003; Thu, 23 Apr 2020 10:15:26 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C70628E0005; Thu, 23 Apr 2020 10:15:26 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0167.hostedemail.com [216.40.44.167]) by kanga.kvack.org (Postfix) with ESMTP id AB8FB8E0003 for ; Thu, 23 Apr 2020 10:15:26 -0400 (EDT) Received: from smtpin05.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 24585181AEF00 for ; Thu, 23 Apr 2020 14:15:26 +0000 (UTC) X-FDA: 76739317452.05.land02_2f5d879b9a908 X-HE-Tag: land02_2f5d879b9a908 X-Filterd-Recvd-Size: 3461 Received: from www262.sakura.ne.jp (www262.sakura.ne.jp [202.181.97.72]) by imf14.hostedemail.com (Postfix) with ESMTP for ; Thu, 23 Apr 2020 14:15:25 +0000 (UTC) Received: from fsav102.sakura.ne.jp (fsav102.sakura.ne.jp [27.133.134.229]) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTP id 03NEEf19008297; Thu, 23 Apr 2020 23:14:41 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Received: from www262.sakura.ne.jp (202.181.97.72) by fsav102.sakura.ne.jp (F-Secure/fsigk_smtp/550/fsav102.sakura.ne.jp); Thu, 23 Apr 2020 23:14:41 +0900 (JST) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/fsav102.sakura.ne.jp) Received: from [192.168.1.9] (M106072142033.v4.enabler.ne.jp [106.72.142.33]) (authenticated bits=0) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTPSA id 03NEEfTq008292 (version=TLSv1.2 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 23 Apr 2020 23:14:41 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Subject: Re: [nacked] mm-oom-avoid-printk-iteration-under-rcu.patch removed from -mm tree To: Michal Hocko Cc: Yafang Shao , Andrew Morton , Roman Gushchin , linux-mm , David Rientjes , Shakeel Butt , Sergey Senozhatsky , Petr Mladek , Steven Rostedt References: <68371d79-dfae-e9b9-38df-dbb916607a82@i-love.sakura.ne.jp> <20200420073305.GD27314@dhcp22.suse.cz> <041d4158-f3dc-a5b5-546e-dd3f71f67b5f@i-love.sakura.ne.jp> <20200422065950.GA30312@dhcp22.suse.cz> <0aa5e490-c5b8-dc5c-334e-9a8d37da215c@i-love.sakura.ne.jp> <20200423073438.GC4206@dhcp22.suse.cz> <20200423110707.GD4206@dhcp22.suse.cz> <20200423140646.GF4206@dhcp22.suse.cz> From: Tetsuo Handa Message-ID: Date: Thu, 23 Apr 2020 23:14:37 +0900 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <20200423140646.GF4206@dhcp22.suse.cz> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 2020/04/23 23:06, Michal Hocko wrote: >> Last year I proposed >> https://lkml.kernel.org/r/1550896930-12324-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp >> and Sergey Senozhatsky commented >> >> "This is a bit of a strange issue, to be honest. If OOM prints too >> many messages then we might want to do some work on the OOM side." >> >> . I was thinking that printing to consoles is a requirement for oom_dump_tasks . >> >> If we can agree with not printing dump_tasks() output to consoles, a trivial >> patch shown below will solve the problem. Those who cannot run syslog daemon >> in userspace might disagree, but this will be the simplest answer. > > Talk to printk people about this. > Already CC'ed. My question for you is are you OK with "not printing dump_tasks() output to consoles?" . If your answer is yes, I will start a new thread for this proposal.