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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,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 E1A64ECE588 for ; Tue, 15 Oct 2019 14:37:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B524C20854 for ; Tue, 15 Oct 2019 14:37:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1571150258; bh=+PszFwIqrlyxVVAbm1B+dbB8MBd5bWJNQBIiWxZXCqc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=TtQNTOafOzID5UNhJi7I7GZHemuByDyintWhtBzFZ33vIrfVvqOloKBl1tstyOh3z 1vMRJMnggdbVDdhSAzU43u/oY3fEJ0IQunYdD9+Agyo/ZKFPSudN6oKECqdAWgXkCo yQtdfdpVbMbOcBjtzseUFoeKQP2OCMprBp1z33uM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732913AbfJOOhh (ORCPT ); Tue, 15 Oct 2019 10:37:37 -0400 Received: from mail-qt1-f174.google.com ([209.85.160.174]:34992 "EHLO mail-qt1-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732895AbfJOOhh (ORCPT ); Tue, 15 Oct 2019 10:37:37 -0400 Received: by mail-qt1-f174.google.com with SMTP id m15so30921414qtq.2; Tue, 15 Oct 2019 07:37:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=4H4Rg3pemm2hU+dY5X0GYDMJ3NZ74bBGNLSG2pqHsAo=; b=WQdx67izKGSUfSAPo9NF9EtD6TtVRgKmrTLP7Ii/UP/qFn8MOeSsLPeRB2VVvs6Au8 zbZCjqvbOmm8mSIYi2gxAXkpXZpVBJAkoZMkLk5dpTQycQUrS3hoytSY+5VeoW5ocohI toqTug4fi9M48G3JmMcZ0II5LDHN4j2jfZKetM8Fq2C7otn/RIA9x6V5sSMSHZ7SwhAq fplUsnkIDDlCSJXkpZ7lr/xlEnLHq77HtoTcm2YXFEPp/k7vtWz3jIORKHuw/wBtc8d/ R7gWmNNkxXfvKW2j9JbzwjZ4TqwHP0bACSq4cfuIICtM6cV3uz0TdlrXDJtk0vVmb956 2zcA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=4H4Rg3pemm2hU+dY5X0GYDMJ3NZ74bBGNLSG2pqHsAo=; b=ER8D3Gy2hEJoqOBKvtLDE1Ou1rCj9uXtc4KzmUzH59QzJJh/cudQAwewuhZZHKVR8U AAH78z7aIR4TERKfeTDvg4ulK5KYmNEoH8NLrILsbkrDOVqDxEs+WdrUud/p+nyufAlS ceAKQoYB48XZDJ43f39zSZeyo9UYkNXbaDek4EWijb/wZRIv9MhWiwTxbGYvOD7RYeKp mc7k9YKhb1b9tpoFaTdWv9WpGqYpJ2GbxNXhzfuv9dQxeg5Aq8L5+VMCQdU29hIdeq5o 86FlCwnExYcpZn+eh4gw4Et363ODMznOTyr6uqpdOvW/mktEGdd0xf6iuRJSl6CWTffS +UPQ== X-Gm-Message-State: APjAAAUrA4q1p5327AIEIezK01wkh8zKGMkUl1cv1kL6WT6qcTt3EbkJ 8WYppDZD8I7b4c8dy9IKYXU= X-Google-Smtp-Source: APXvYqyUL/7XSwfJYR3ilAkd+OfYZXkjxiqwGkNg6FSy5TzKmMfLNWOPtybtiTeMJqLuCJ2cXClRDA== X-Received: by 2002:ad4:4673:: with SMTP id z19mr25933996qvv.236.1571150255607; Tue, 15 Oct 2019 07:37:35 -0700 (PDT) Received: from localhost ([2620:10d:c091:500::3:2a53]) by smtp.gmail.com with ESMTPSA id x55sm12586667qta.74.2019.10.15.07.37.34 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 15 Oct 2019 07:37:34 -0700 (PDT) Date: Tue, 15 Oct 2019 07:37:31 -0700 From: Tejun Heo To: Hillf Danton Cc: Jan Kara , mm , fsdev , Andrew Morton , linux , Roman Gushchin , Johannes Weiner , Shakeel Butt , Fengguang Wu , Minchan Kim , Mel Gorman Subject: Re: [RFC] writeback: add elastic bdi in cgwb bdp Message-ID: <20191015143731.GJ18794@devbig004.ftw2.facebook.com> References: <20191012132740.12968-1-hdanton@sina.com> <20191015140356.9256-1-hdanton@sina.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191015140356.9256-1-hdanton@sina.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Hillf. Do you have a test case which can demonstrate the problem you're seeing in the existing code? Thanks. -- tejun