Received: by 2002:a05:6a11:4021:0:0:0:0 with SMTP id ky33csp523158pxb; Tue, 14 Sep 2021 03:03:44 -0700 (PDT) X-Google-Smtp-Source: ABdhPJypo1RuslZMPTHDDmvX+7bx7UrraP1+Y46Gtffyd99JJFGq3INzg+ziWyG4xBF8RGwCAsDk X-Received: by 2002:a05:6402:4404:: with SMTP id y4mr18352650eda.52.1631613824210; Tue, 14 Sep 2021 03:03:44 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1631613824; cv=none; d=google.com; s=arc-20160816; b=rYFzDT5KgmmHX543PjOfNvclNo1ZU7HcRWhiihTouIFZdgszAxebf8EQ0g41hWn5tb fHn9t/UnVnLFB82tWcQSPftSXty1ZKXdXua3DWzbJsoDRbeHlz8r6e2RQ9sMaFhc8l5M KLRLtrSWg/5CQqf2wgNZRWohD/YapzioPbUZ8CJIqZEbvot2NMYLutTDUr8mlUd9afrg imbJAkAWarvFPJ9qERThcYjtgj1MOAXU3DHGfYQP9YnVhp4BEa1EB1GXaSsDSTUR+8i0 49tYgl9cPQArO/FGkQ75GwoLhYr/SRuqJKc/C2SAcAkE1Rh9C4FYz0X0LAbT/NIqIVUF +gYg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :in-reply-to:mime-version:user-agent:date:message-id:from:references :cc:to:subject:dkim-signature; bh=ImRIPihhAObidTCiJqcnR+Z8IfwFSS7GltQDYdsx+N8=; b=QxrIytorTQdYuhqzFqtbXNuXrFPRPOjcHgdoXMatxIF/xfgEppBqLoT89DoFp7vH0R e+WaSGEA6IavsZjlmUWdyvMwomfylSDq8hfcw90uizG35H3M0JpchTY8gvvNvm9mf9Bb tChTL2FLQLfnEwZvBcaVl6ptaGCiwmIVdUIO2aapJhSexnfCTbmGPiR4wNSe9CQX4yoQ pkTCwuBfaZhKzRMQLGwQrS6V86BKc8rh4/Nl7JR5HPEd93QSdy7lMvNmrdvDt2Vx9RHf 2X1xMIenfKMkpjVcihKOkOyHM9VvdUw1fH1IY8ADwYx17m1xYNU6aeEHPs/mrCejuvUz OfLw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@virtuozzo.com header.s=relay header.b=s9EIcM21; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=virtuozzo.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id y12si7845191edr.430.2021.09.14.03.03.19; Tue, 14 Sep 2021 03:03:44 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@virtuozzo.com header.s=relay header.b=s9EIcM21; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=virtuozzo.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230509AbhINKDF (ORCPT + 99 others); Tue, 14 Sep 2021 06:03:05 -0400 Received: from relay.sw.ru ([185.231.240.75]:59470 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229907AbhINKDC (ORCPT ); Tue, 14 Sep 2021 06:03:02 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=virtuozzo.com; s=relay; h=Content-Type:MIME-Version:Date:Message-ID:From: Subject; bh=ImRIPihhAObidTCiJqcnR+Z8IfwFSS7GltQDYdsx+N8=; b=s9EIcM218cXLgAcVF x2igWWw+5J2ksbdHAJ76DZGcs4PAzMOI4aqrBzYOgTroR3W22sFgMdz6nr8qWJSgZEgjefXl12Zfz 5Rzt4hTINk5F9djLHnQdmuhAnpSxGuDgQmwNgTfiMHgIIord/XMaxAN3OiEGHEcr2V+NjawPY02l0 =; Received: from [10.93.0.56] by relay.sw.ru with esmtp (Exim 4.94.2) (envelope-from ) id 1mQ5G0-001w0o-Uf; Tue, 14 Sep 2021 13:01:40 +0300 Subject: Re: [PATCH memcg] memcg: prohibit unconditional exceeding the limit of dying tasks To: Michal Hocko Cc: Johannes Weiner , Vladimir Davydov , Andrew Morton , Tetsuo Handa , cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <5b06a490-55bc-a6a0-6c85-690254f86fad@virtuozzo.com> <7af26106-388c-6f99-e018-669a8f0cf9b5@virtuozzo.com> From: Vasily Averin Message-ID: Date: Tue, 14 Sep 2021 13:01:40 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9/13/21 1:55 PM, Michal Hocko wrote: > Here is what I would do. Your patch fixes the problem, I just want to add rename of should_force_charge() helper to task_is_dying() and will submit v2 version soon. I think this patch is not optimal, however its improvements can be discussed later. Thank you, Vasily Averin