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=-7.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 2E093C433B4 for ; Tue, 6 Apr 2021 03:23:16 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A1CE4613B8 for ; Tue, 6 Apr 2021 03:23:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A1CE4613B8 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 1AC346B007B; Mon, 5 Apr 2021 23:23:15 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 136596B007D; Mon, 5 Apr 2021 23:23:15 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id ECA226B007E; Mon, 5 Apr 2021 23:23:14 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id CCA266B007B for ; Mon, 5 Apr 2021 23:23:14 -0400 (EDT) Received: from smtpin39.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 6F0B9613D for ; Tue, 6 Apr 2021 03:23:14 +0000 (UTC) X-FDA: 78000496308.39.B1558A2 Received: from mail-yb1-f178.google.com (mail-yb1-f178.google.com [209.85.219.178]) by imf04.hostedemail.com (Postfix) with ESMTP id E5351132 for ; Tue, 6 Apr 2021 03:23:12 +0000 (UTC) Received: by mail-yb1-f178.google.com with SMTP id l9so306692ybm.0 for ; Mon, 05 Apr 2021 20:23:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=xyUOqQqREwsmvr/dLosqt/ckIIZfER6FkNAdfyxy9uY=; b=t5E2hut5WjKDzvQgOPwKuWQEq9EGSvzfR4OC4bI5V7kIwUyaF3zmDBhabi5rJR82dg AnGwqHeGRP6h3UESEig0+hJQB2IBOmiRAmBgURVaoyk9vQ0O+woNrdMk1LV+16lPeea9 ddoNDVZmu9CcAZMMK2ApcYu/kApWdEpBz5/sCv9FDAU/SHYE3FAlPSazpvvjzTTuA1EL xnupfEfwm7VYjfIRK0SYocYabKzWKVNtQlgnuLJNQTgozntliBKA4h8F1xT+wBcDd9HJ tnLb9D7qBtuLEFYr8XYbWepN3ak3DdRi/t+G/Ye5MQ4cl/lwY5UPsDjFasIKY1QxCrua 5yZA== 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=xyUOqQqREwsmvr/dLosqt/ckIIZfER6FkNAdfyxy9uY=; b=Gzk23wLH48YWt2RE4IT8lGUUTOAgVuME5bMkZLdvFLwma1I9yku+23miVQxu/zV3RJ ZLm33Y8XI1iU6uaES8M3/xuVMxCdd5/EWWkYkbODED3JIpaxXjYOpDQCHpulH91HOGtz a1IIBobva9Dqrw4XCz6t/T2oQ6VFNXJEV7sfvwe9JVwl81JcH+G8CBc+fsdCgrszhaMY +FdoKxxyDIKjkeF1lAxJ+bDG/7zw7i3l26fGBVAK4eI5vNJWS3m8hjPZsnFlfNTBG8Gx aRER8GF1JLQsKIfv/YV2TZnPiSt7CRcur2kDJtxHYoErAo96grwKq79kCg5MVmTSe2LN 5PBA== X-Gm-Message-State: AOAM530Y0+tJxJybEyfkzC19LNMwawPWuRc/tNbKa6EL+I+QO3qSY2Ek ZMegqRcBaLEbvnHQNxCsFPdKVHp6wSc5Bbwxsl8= X-Google-Smtp-Source: ABdhPJwvn+9Sqt3YJDnBD6ITBf4KlJ8hnzi2asfm8VH645X8R3lzJQEeiZnNvEqxwztwH9Us5YonBxjhBrBHABgLnkQ= X-Received: by 2002:a25:238a:: with SMTP id j132mr17675039ybj.117.1617679393333; Mon, 05 Apr 2021 20:23:13 -0700 (PDT) MIME-Version: 1.0 References: <20210402191638.3249835-1-schatzberg.dan@gmail.com> <20210402191638.3249835-4-schatzberg.dan@gmail.com> In-Reply-To: <20210402191638.3249835-4-schatzberg.dan@gmail.com> From: Ming Lei Date: Tue, 6 Apr 2021 11:23:01 +0800 Message-ID: Subject: Re: [PATCH 3/3] loop: Charge i/o to mem and blk cg To: Dan Schatzberg Cc: Jens Axboe , Tejun Heo , Zefan Li , Johannes Weiner , Andrew Morton , Michal Hocko , Vladimir Davydov , Hugh Dickins , Shakeel Butt , Roman Gushchin , Muchun Song , Yang Shi , Alex Shi , Alexander Duyck , Wei Yang , "open list:BLOCK LAYER" , open list , "open list:CONTROL GROUP (CGROUP)" , "open list:MEMORY MANAGEMENT" Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: E5351132 X-Stat-Signature: 1oj8n5gz9ei5bw1nid7ftjxnpx7pmz3i X-Rspamd-Server: rspam02 Received-SPF: none (gmail.com>: No applicable sender policy available) receiver=imf04; identity=mailfrom; envelope-from=""; helo=mail-yb1-f178.google.com; client-ip=209.85.219.178 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1617679392-893140 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 Sat, Apr 3, 2021 at 3:18 AM Dan Schatzberg wrote: > > The current code only associates with the existing blkcg when aio is > used to access the backing file. This patch covers all types of i/o to > the backing file and also associates the memcg so if the backing file is > on tmpfs, memory is charged appropriately. > > This patch also exports cgroup_get_e_css and int_active_memcg so it > can be used by the loop module. > > Signed-off-by: Dan Schatzberg > Acked-by: Johannes Weiner Reviewed-by: Ming Lei -- Ming Lei