Received: by 2002:a25:4158:0:0:0:0:0 with SMTP id o85csp4349089yba; Wed, 17 Apr 2019 09:35:22 -0700 (PDT) X-Google-Smtp-Source: APXvYqy5XOx/B8rPckx8zFyy6J9eeRARFLl8XngabeFIlqZ5ZhDC3E6Sn0IfWn9lCpKvAzdnfrf4 X-Received: by 2002:aa7:8c13:: with SMTP id c19mr89688707pfd.225.1555518922755; Wed, 17 Apr 2019 09:35:22 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1555518922; cv=none; d=google.com; s=arc-20160816; b=z7W3Sk24AyLGa+R2NiTCSGBWKEgi0IYLBTjMD5t5yLywVF25FMHcMtScoqOIRzFhqx CFgX8DCmZLNBO58Vic7w4YCZ9xTT4eSXw6AJYz+91MEfaM1DQdp2oobFVsK7Ji7o8fxH Z9KdfWUt+hnBoWGEl2HZI6rZ46CAyJOqQzAi09l87L9dRBGwA1NNHHcAo/TF2u3UnCYx /OtqXTH4F3govxLF+B5TOb4QarkI3kztcbwB3IfczwVE9/uE7FsR6XBBNuO8iEIfVb5a 5Yw/eWL/vIDl1jPnmB7IRavquzIHoAGXQUeIJuFxdqEWdLQyF3dN8cK0cT7tYkR55wrB sY0w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=VV4d8N/Ar8bLIiIUepWUD57tvkgJg+Pqd02oCkGTPVc=; b=Y/gNGk5TX7i5aHP/6p9rIDPIYtiQuSZN+PRdh6sqwOdWlS1c4EAbuTphd9wyv+VnEu qsHc0ltgt9pTUwwoQJNI1m3v+qt5J9/wZ1+FIG40PhB8lCjRbtxMi2N6NhcqYiiVmYvO RJxaaodLrR/0zO6air9ycdaq/vbrZO/WVpMMoiybZK/9+igx2FO3SksePvuOveJFibix 3sH/wkK1iYS0P2wngBISHrTVICKpbNksK0HRyq33qpTsifAxe9A4jHjmZ635aLq6ryzm /fM8UUNCGX7ZvAk/mkvSpA9vVkXNLpUE+I29M6vx3zxmiWmxYVsoc/SUgOXN0NWncw7R vcJA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id q20si47580026pgv.6.2019.04.17.09.35.06; Wed, 17 Apr 2019 09:35:22 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732750AbfDQPaE (ORCPT + 99 others); Wed, 17 Apr 2019 11:30:04 -0400 Received: from mga18.intel.com ([134.134.136.126]:16138 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732679AbfDQPaD (ORCPT ); Wed, 17 Apr 2019 11:30:03 -0400 X-Amp-Result: UNSCANNABLE X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Apr 2019 08:30:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,362,1549958400"; d="scan'208";a="292351118" Received: from unknown (HELO localhost.localdomain) ([10.232.112.69]) by orsmga004.jf.intel.com with ESMTP; 17 Apr 2019 08:30:01 -0700 Date: Wed, 17 Apr 2019 09:23:46 -0600 From: Keith Busch To: Michal Hocko Cc: Dave Hansen , Yang Shi , mgorman@techsingularity.net, riel@surriel.com, hannes@cmpxchg.org, akpm@linux-foundation.org, dan.j.williams@intel.com, fengguang.wu@intel.com, fan.du@intel.com, ying.huang@intel.com, ziy@nvidia.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [v2 RFC PATCH 0/9] Another Approach to Use PMEM as NUMA Node Message-ID: <20190417152345.GB4786@localhost.localdomain> References: <1554955019-29472-1-git-send-email-yang.shi@linux.alibaba.com> <20190412084702.GD13373@dhcp22.suse.cz> <20190416074714.GD11561@dhcp22.suse.cz> <876768ad-a63a-99c3-59de-458403f008c4@linux.alibaba.com> <20190417092318.GG655@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190417092318.GG655@dhcp22.suse.cz> User-Agent: Mutt/1.9.1 (2017-09-22) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 17, 2019 at 11:23:18AM +0200, Michal Hocko wrote: > On Tue 16-04-19 14:22:33, Dave Hansen wrote: > > Keith Busch had a set of patches to let you specify the demotion order > > via sysfs for fun. The rules we came up with were: > > I am not a fan of any sysfs "fun" I'm hung up on the user facing interface, but there should be some way a user decides if a memory node is or is not a migrate target, right?