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=-7.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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 E03D0C433E1 for ; Fri, 21 Aug 2020 15:08:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B8C8E20656 for ; Fri, 21 Aug 2020 15:08:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="jP8jPmAI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727921AbgHUPIZ (ORCPT ); Fri, 21 Aug 2020 11:08:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50398 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725873AbgHUPIV (ORCPT ); Fri, 21 Aug 2020 11:08:21 -0400 Received: from mail-il1-x141.google.com (mail-il1-x141.google.com [IPv6:2607:f8b0:4864:20::141]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 47519C061574 for ; Fri, 21 Aug 2020 08:08:21 -0700 (PDT) Received: by mail-il1-x141.google.com with SMTP id q14so1658462ilj.8 for ; Fri, 21 Aug 2020 08:08:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=cATovcDF6EIIZdeZ6DTsdMSJEoMk6qL5T5u7Q6ei1rg=; b=jP8jPmAII5A/BaqiPZZXBQ/0nb55IKsHNPaIJCOCI9t3wpmalgbB3xtv+ZoD/sHlfF P+2P1a6l/tNo3CGG6rHSJOb2IyuNmPFeHlVWbqMcSNj1CfYxBRCcIrHXmxjgYLGee9X+ U8S1nzS4XZPZ/BE4wN0ErVYadwOoNpmLpOool5rbLR3DdGUsHEPU4tGcNEpum1JuZxOz m+02WpKlWQtfgjk6LTzXRBBSat40NNh3PIKAvsnsTHx+V6B91HpRAinkxOylKxG+3bCN anLuNaN4N8xemHqYfRg4R+bxjkc6kGr5zSL4J420RagQmWnaJQ9IPgk4EFIg6Qw4I3lE eM/A== 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=cATovcDF6EIIZdeZ6DTsdMSJEoMk6qL5T5u7Q6ei1rg=; b=DSN2t71aJhbwywLJ+zPqOnOGB1WqwY0Kx/C8e0yYaM2BpztZS2BDTKPU7YRwRpQadk ehzYrRMMJMqPYaHEfJOWe2YlicsY1tnEHLzY7qzSG4KLwp7DSbK/8cT2n+tjvsdKfSk4 ewlrBVnMyCp0V8qWc5000sxLaV7ya2aLgFi/mGMHQRf24jK8VxgYQOMjAl1s3kzBcd7m wJ/PVEdvqeKz2TtExdm/7UZ5wZ7RbXEy5uc1kRC2Gn1V+WfYw48qti1AcnLKCz0Cy+vT 9ruuE4hDEX+8D1eDyMhqjNlBZ7gEstGbSsPtWHZiJ2pxbeLlvTdqCfTyaqljiNKRdpun rl+Q== X-Gm-Message-State: AOAM530Tsx4UXXyrUCJ6gkcO++vSchUdBFROaWGEyq8ETncrvveUCl0O DV5oIR/RyaF3ll7MflDMyafteQ== X-Google-Smtp-Source: ABdhPJz7MRRaC85bkv/XmtISHRlp+BhEJvWp0fMl+7/CE/SMYUH37t/Cy8RTJG/mux9jGrmgdXSbsw== X-Received: by 2002:a05:6e02:1352:: with SMTP id k18mr2826675ilr.276.1598022499002; Fri, 21 Aug 2020 08:08:19 -0700 (PDT) Received: from [192.168.1.58] ([65.144.74.34]) by smtp.gmail.com with ESMTPSA id 187sm1388945ile.52.2020.08.21.08.08.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 21 Aug 2020 08:08:18 -0700 (PDT) Subject: Re: [PATCH v6 0/4] Charge loop device i/o to issuing cgroup To: Dan Schatzberg , Shakeel Butt Cc: Alexander Viro , Jan Kara , Amir Goldstein , Tejun Heo , Li Zefan , Johannes Weiner , Michal Hocko , Vladimir Davydov , Andrew Morton , Hugh Dickins , Roman Gushchin , Chris Down , Yang Shi , Thomas Gleixner , "Peter Zijlstra (Intel)" , Ingo Molnar , Mathieu Desnoyers , Andrea Arcangeli , "open list:BLOCK LAYER" , open list , "open list:FILESYSTEMS (VFS and infrastructure)" , "open list:CONTROL GROUP (CGROUP)" , "open list:CONTROL GROUP - MEMORY RESOURCE CONTROLLER (MEMCG)" References: <20200528135444.11508-1-schatzberg.dan@gmail.com> <20200821150405.GA4137@dschatzberg-fedora-PC0Y6AEN.dhcp.thefacebook.com> From: Jens Axboe Message-ID: <9b55ca3d-cca5-50ae-4085-5a1866f77308@kernel.dk> Date: Fri, 21 Aug 2020 09:08:16 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200821150405.GA4137@dschatzberg-fedora-PC0Y6AEN.dhcp.thefacebook.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 8/21/20 9:04 AM, Dan Schatzberg wrote: > On Thu, Aug 20, 2020 at 10:06:44AM -0700, Shakeel Butt wrote: >> On Thu, May 28, 2020 at 6:55 AM Dan Schatzberg wrote: >>> >>> Much of the discussion about this has died down. There's been a >>> concern raised that we could generalize infrastructure across loop, >>> md, etc. This may be possible, in the future, but it isn't clear to me >>> how this would look like. I'm inclined to fix the existing issue with >>> loop devices now (this is a problem we hit at FB) and address >>> consolidation with other cases if and when those need to be addressed. >>> >> >> What's the status of this series? > > Thanks for reminding me about this. I haven't got any further > feedback. I'll bug Jens to take a look and see if he has any concerns > and if not send a rebased version. No immediate concerns, I think rebasing and sending one against the current tree is probably a good idea. Then we can hopefully get it queued up for 5.10. -- Jens Axboe