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 674F6C43461 for ; Tue, 6 Apr 2021 03:23:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 421D56124B for ; Tue, 6 Apr 2021 03:23:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242020AbhDFDXW (ORCPT ); Mon, 5 Apr 2021 23:23:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38942 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230364AbhDFDXV (ORCPT ); Mon, 5 Apr 2021 23:23:21 -0400 Received: from mail-yb1-xb29.google.com (mail-yb1-xb29.google.com [IPv6:2607:f8b0:4864:20::b29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 211A3C061574; Mon, 5 Apr 2021 20:23:14 -0700 (PDT) Received: by mail-yb1-xb29.google.com with SMTP id 185so9100880ybf.3; Mon, 05 Apr 2021 20:23:14 -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=k62D7rngSctpHmswl7V4oKhicWgLiVSCvLUp7xNXwmEPOI13MJvukLO+fJOGuF+1Gg ctdPU2aQYXBoaAAIgzcXciLcwavYWpykUVAzy0/dY2TA2qRJ/JyUPNHZm3V9NDMCvqSl ZR1F5jMhU/ILk7fCmLeF4gCWOM4dXDyt108RGLTcO8s2r5mukxFlK1ppIZdzF31GSya4 dSyfQR3iAIsIc9/jMUx99COyUwH8IF13iP0JTJ30MZUB3+mrSwXlpA6Rko42vvHI8btR /eh7czErjq+IRkhpb+l5bPzHLbdztGRFWQSjx0IUGIkDp/0unAk7ULplHHPrMy0b/6f4 nBtA== X-Gm-Message-State: AOAM530vg3v+cJdFFqncHBTIyKxiiGlFMyvn85Q1YrW0Ht9WEXFLAmp+ r/pArvdbVJoR+QY8LuFCV2qSzNHezjklH2CIcMU= 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" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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