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=-3.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 90DD0C3A5A9 for ; Sat, 2 May 2020 14:35:24 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 36CD720661 for ; Sat, 2 May 2020 14:35:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Drs8/bAb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 36CD720661 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 8713A8E0005; Sat, 2 May 2020 10:35:23 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 820B38E0001; Sat, 2 May 2020 10:35:23 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 75D778E0005; Sat, 2 May 2020 10:35:23 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0139.hostedemail.com [216.40.44.139]) by kanga.kvack.org (Postfix) with ESMTP id 5B4218E0001 for ; Sat, 2 May 2020 10:35:23 -0400 (EDT) Received: from smtpin23.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 195B382499A8 for ; Sat, 2 May 2020 14:35:23 +0000 (UTC) X-FDA: 76772026926.23.birth85_11db81d32ac5a X-HE-Tag: birth85_11db81d32ac5a X-Filterd-Recvd-Size: 3219 Received: from mail-pf1-f195.google.com (mail-pf1-f195.google.com [209.85.210.195]) by imf05.hostedemail.com (Postfix) with ESMTP for ; Sat, 2 May 2020 14:35:22 +0000 (UTC) Received: by mail-pf1-f195.google.com with SMTP id f7so3030628pfa.9 for ; Sat, 02 May 2020 07:35:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=FXcuA0qVrgrXmHiRZzltV8FPffWY2UOqzn/joWGLYKA=; b=Drs8/bAb3kNX5lLjgc7QIzApjHbkMKKN2bChwXp8I6uqixrpbxgAbBFoQ4nBRkztiI DozwvnPoaxv+wZO/qU9fyZrbYEwH9FSo89j5GMI4lDTQOu6Jno264yNXDc8LBZPFfQOE vkKRPW7OC4hdvqTsG/h5zXDewCfNQ80cXPIZuGH5V/drKyRxl0f3xEAKjN53oN2bNVbb oGV43+AazGF5TCgfkFC3l9ASrLLUrkZ1NGL4XLGWdWvfxxkRxYXo/SgbcX1aNi8YB+nL he4NZduS92RCUw69Y/EAlHstgvVPQUWaZ4ftWz2GPnfV73aDMI627EWcPZGvyM8Lxovi Wi8A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=FXcuA0qVrgrXmHiRZzltV8FPffWY2UOqzn/joWGLYKA=; b=aXZTT9jWNcyb2VtL0Yd83UsE83rxWbsYGcsIqTAHMIvZRgsjK5wp6jjftzg3/8w9tq QQmzdjyfJqUFc188Xewi8Ee/r13gVQpcAWsLHNr45TDxfjtYqf6NHMUGEkZ2w49iEAqj dzzO4QqESKuzJ+vDEtkUqrqw5RLxI5Kf7HXlXINbMUA11dlx2QFKPAv1RbxneOwu8+eL hDl3rU1lusjByPBRHt5U1wvoMW3F8bq1CEWdMgmsdYYUe+kEnDH+lmuPLzRnbHGbcDr6 ywS6tjUeiXd8ySiirtcrlssdaWoUFpyw/tEhif060NTcZK2dfPrup+dEF1MTmDwI1uyP I+7Q== X-Gm-Message-State: AGi0PuakBQ1bPE0xlt+636fzLO9OMP4M9bfKHIOCYXeKeZRLJTScVfK6 OrVuryk62/FMVQoyIf9vmpU= X-Google-Smtp-Source: APiQypL9lp8anwQqFmY7s0/taqZGkBsUt8HHgswtfS/6lKVExuqLNCv+1xdQ6VpnaxwxPGuartbUvw== X-Received: by 2002:a63:f48:: with SMTP id 8mr9346872pgp.184.1588430121843; Sat, 02 May 2020 07:35:21 -0700 (PDT) Received: from localhost.localdomain ([203.100.54.194]) by smtp.gmail.com with ESMTPSA id o10sm4244867pgb.78.2020.05.02.07.35.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 02 May 2020 07:35:21 -0700 (PDT) From: Yafang Shao To: akpm@linux-foundation.org Cc: shakeelb@google.com, hannes@cmpxchg.org, mhocko@kernel.org, guro@fb.com, gthelen@google.com, linux-mm@kvack.org, Yafang Shao Subject: [PATCH 0/2] memcg oom: don't try to kill a process if there is no process Date: Sat, 2 May 2020 10:34:50 -0400 Message-Id: <20200502143452.7640-1-laoar.shao@gmail.com> X-Mailer: git-send-email 2.18.1 X-Bogosity: Ham, tests=bogofilter, spamicity=0.028463, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Recently Shakeel reported a issue which also confused me serveral months earlier that it still try to kill a process even if there is no process. If a memcg is not populated, it is useless to try to kill a process. mem_cgroup_out_of_memory() is renamed to mem_cgroup_oom_kill() for better understanding. Yafang Shao (2): mm, memcg: better name mem_cgroup_out_of_memory() mm, memcg: don't try to kill a process if memcg is not populated mm/memcontrol.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) -- 2.18.2