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=-4.4 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 47645C4338F for ; Thu, 29 Jul 2021 06:37:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2DFD960F5E for ; Thu, 29 Jul 2021 06:37:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234311AbhG2Ghq (ORCPT ); Thu, 29 Jul 2021 02:37:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234079AbhG2Ghp (ORCPT ); Thu, 29 Jul 2021 02:37:45 -0400 Received: from mail-pl1-x62d.google.com (mail-pl1-x62d.google.com [IPv6:2607:f8b0:4864:20::62d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9974CC061757; Wed, 28 Jul 2021 23:37:41 -0700 (PDT) Received: by mail-pl1-x62d.google.com with SMTP id d17so5761064plh.10; Wed, 28 Jul 2021 23:37:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=mn2QXsC9iXN6n0TPueHgxmDAwTtq1MsZU9RTs4Fr/hY=; b=fULRnTdszNXc8PP2zScOdaash0b/Ue5x/8SbvvdEgbnSZ9++AHkKX1BMIbqqAWS543 T5qpIoeSR5Xfhr2XKcxJjw5LMQzQ1fJGHO5R4iJDoT+cVvAHaLN3ET04tmF9tPqzL82a sI5/C2o/SnRDYWLmjn5TxWbCgRbIIOjq1Cw5CiR4PUvOxMno67YpRr7f24NBUE77mRUB hEgl0SHs7qK6u+8gvhEp9JCJjf1m45Ucz/Grr0B2ZEf+cLeq+MGWY+A8aMvflAYUxqn7 eHItlxuEIVouEpLW3G+j/YUt+0JpI32zgc0jJ+r1WI/qfgrK23Ne+Arkh6wdmTQa6V+d HXSQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=mn2QXsC9iXN6n0TPueHgxmDAwTtq1MsZU9RTs4Fr/hY=; b=fwyMH5fnQwQJdf7oGwNgaZa28+9Y3AsbI0wCxXQuQcmYPKGurgD1T0ASiQmfeefIMC U9dLv9iOqUow0Tg3dI8YEfcEZ8m15H1o64DCr1RRa03tQ1+rzhrPPpfHS9lZhNnUyE10 ljhVkRFncGpivuW56xFLu4zw1aPZXHViLZ/CfYfD1Ac0hP0lnfvsSUxxmcGrxYZiEKQL cMuRaGE10jsBG08e77Btbf0qE4z/UeerFgCpEFCd7QwE4ZOlr+sJLZsRp+Lxqt11ldbl 1Rb3GThG5E1QkBgcHQnbQXzB9iHvkIn/SQCzx4eYkrO8MtfaZqlp1XswZajM9RcjACvF tXtw== X-Gm-Message-State: AOAM530bd+xcKdpLdt8zjFSkp+5WOSn24eONpfKkoGsoHTrDdNCIVxou s0ERE7YVplrEAADCjm5SDVis/p9xjYd0NTej X-Google-Smtp-Source: ABdhPJzeNf7oxJEGq4s6m5Lmmed75zMgOvhAaBS/fsHPP2WD2ZRwBn/xnghBdV1wHXkZCeKsQX4U9Q== X-Received: by 2002:a62:f252:0:b029:344:ea90:e913 with SMTP id y18-20020a62f2520000b0290344ea90e913mr3435106pfl.15.1627540661070; Wed, 28 Jul 2021 23:37:41 -0700 (PDT) Received: from [192.168.255.10] ([203.205.141.115]) by smtp.gmail.com with ESMTPSA id 33sm2414118pgs.59.2021.07.28.23.37.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 28 Jul 2021 23:37:40 -0700 (PDT) Subject: Re: [RFC PATCH v2 1/3] misc_cgroup: add support for nofile limit To: Tejun Heo Cc: viro@zeniv.linux.org.uk, lizefan.x@bytedance.com, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, cgroups@vger.kernel.org References: <3fd94563b4949ffbfe10e7d18ac1df3852b103a6.1626966339.git.brookxu@tencent.com> From: brookxu Message-ID: <1a5153d3-5cdc-58c5-858f-3c369d69e881@gmail.com> Date: Thu, 29 Jul 2021 14:37:32 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Thanks for your time. Tejun Heo wrote on 2021/7/28 11:38 下午: > Hello, > > On Wed, Jul 28, 2021 at 05:47:05PM +0800, brookxu wrote: >> But considering stability issues(k8s), There are still many production environments use >> cgroup v1 without kmem. If kmem is enabled, due to the relatively large granularity >> of kmem, this feature can also prevent the abnormal open behavior from making the entire >> container unavailable? but I currently do not have this scenario. > > Now we are repeating the same points. This simply doesn't justify adding a > user-facing feature that we have to maintain for eternity. Ok, thanks you for your patient reply. > Thanks. >