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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 72D0BC433EF for ; Tue, 7 Sep 2021 18:34:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 520AA61106 for ; Tue, 7 Sep 2021 18:34:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345939AbhIGSfJ (ORCPT ); Tue, 7 Sep 2021 14:35:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43510 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240131AbhIGSfI (ORCPT ); Tue, 7 Sep 2021 14:35:08 -0400 Received: from mail-ed1-x535.google.com (mail-ed1-x535.google.com [IPv6:2a00:1450:4864:20::535]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 52D21C061575 for ; Tue, 7 Sep 2021 11:34:01 -0700 (PDT) Received: by mail-ed1-x535.google.com with SMTP id g8so13974653edt.7 for ; Tue, 07 Sep 2021 11:34:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=1aOJIDEqMjm8ZK3GtU+MSwaNYHHbxj0jU2uYyqL9MW4=; b=ZbxHP7Of0TVF2MchIXcNmmJEkQD4+JHAVxIOsVBBh2mzWBWAR/dP2rl/+DgZuyLfT8 CQyVgq6n5L9QsMQ1Mtku3GgYKtLGaT+9T+yqwqKmliCV2CLOdHjn7p8w7Kv6UVI2rXqG ZjtC6nobVPWQfg6EyH5TWKGknJrIdjt9Lj5+Y= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=1aOJIDEqMjm8ZK3GtU+MSwaNYHHbxj0jU2uYyqL9MW4=; b=ihzYKs0rtbiFwA0zwH1mgtiAV1TzIP0DFED8fncBzLtCdyii3Q58oJs4yxa7bahVb2 OvjenuYLGy1O2ZqngWZTAEwOby+XJma9oXa+WWRXKdMO8ydRA670ocMpkrZ5e09FU+x4 N3816ElXls+KgbRlesfqwU0qYMRxVcwhbqxqXZdxXLQlcTdkgiXFAq6S4d8Y3s7u39OP neHwtcksemSKRlgXWjSw/3/s1Pbz6ZRaZ6LIw5GYr3W/ifUgytXPi3usF20TJBbh9DLF 2nbOBwcbfA3R3lszZkUS12Si1E0dnUupyrGsQQfvkhkFgvBxj7icvojgwBTOnxnXljgj IpXQ== X-Gm-Message-State: AOAM532UkZufEjlLlQXHqMf4kpiB+lD+1wfEA01CvXa8mKBcYA7XchgO Z8DqqH+BiDT4jA7QSCjHPy2S4SUMjUVNOVff/Jg= X-Google-Smtp-Source: ABdhPJwKld9/A9FOdaZKINxvW7MldzerxdmwxjWI5AwvOIToSTMk4a+S7auFRqXErLT3uzWC68cvew== X-Received: by 2002:a05:6402:2708:: with SMTP id y8mr956323edd.84.1631039639745; Tue, 07 Sep 2021 11:33:59 -0700 (PDT) Received: from mail-wr1-f51.google.com (mail-wr1-f51.google.com. [209.85.221.51]) by smtp.gmail.com with ESMTPSA id k12sm6967502edo.9.2021.09.07.11.33.58 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 07 Sep 2021 11:33:59 -0700 (PDT) Received: by mail-wr1-f51.google.com with SMTP id n5so15833931wro.12 for ; Tue, 07 Sep 2021 11:33:58 -0700 (PDT) X-Received: by 2002:a2e:a363:: with SMTP id i3mr15409370ljn.56.1631039628449; Tue, 07 Sep 2021 11:33:48 -0700 (PDT) MIME-Version: 1.0 References: <20210907150757.GE17617@xsang-OptiPlex-9020> In-Reply-To: From: Linus Torvalds Date: Tue, 7 Sep 2021 11:33:32 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [memcg] 0f12156dff: will-it-scale.per_process_ops -33.6% regression To: Shakeel Butt , Minchan Kim Cc: Jens Axboe , kernel test robot , Vasily Averin , Alexander Viro , Alexey Dobriyan , Andrei Vagin , Borislav Petkov , Borislav Petkov , Christian Brauner , Dmitry Safonov <0x7f454c46@gmail.com>, "Eric W. Biederman" , Greg Kroah-Hartman , "H. Peter Anvin" , Ingo Molnar , "J. Bruce Fields" , Jeff Layton , Jiri Slaby , Johannes Weiner , Kirill Tkhai , Michal Hocko , Oleg Nesterov , Roman Gushchin , Serge Hallyn , Tejun Heo , Thomas Gleixner , Vladimir Davydov , Yutian Yang , Zefan Li , Andrew Morton , LKML , lkp@lists.01.org, kernel test robot , "Huang, Ying" , Feng Tang , Zhengjun Xing Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 7, 2021 at 10:52 AM Linus Torvalds wrote: > > So _right_now_ my plan is to revert the two obvious cases: > > 0f12156dff28 memcg: enable accounting for file lock caches > b65584344415 memcg: enable accounting for pollfd and select bits arrays That "my plan" became "my action", because I ended up having another VM revert due to an oops report and once I started doing that, I just did all my pending reverts. If people are aware of any other cases I missed, please holler. Because right now my revert queue is empty, but it migth be because I overlooked something. Linus