Received: by 2002:ac0:946b:0:0:0:0:0 with SMTP id j40csp158474imj; Thu, 14 Feb 2019 17:37:32 -0800 (PST) X-Google-Smtp-Source: AHgI3IYyt/ZqeRt7l+0bz7hyR5wgcvKG/WFNelX//+phXrOLvvyB7sqC1rn9/Yj3OSQ/XNp4+yoD X-Received: by 2002:a63:20e:: with SMTP id 14mr2874587pgc.161.1550194651946; Thu, 14 Feb 2019 17:37:31 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1550194651; cv=none; d=google.com; s=arc-20160816; b=p3vxFLqlyIx6lXaohO+4C/Zbzh8f0c9HxDzjHPhx/ZouCu2k+z3EepVeNhe0YHXlU2 ry7RzL/JWMquzjwYt4RaJk7XfB7XBfENSV88jd0Ghi/A0e2FiAT5ove0HbToLkrwNwO8 aKPMCvyfu5NOKLn532D4PR3bconn3JE0QeV0PMXQoc57ys2faSFm/4EVUNLaONMZZ9m+ V8kJuAciTzXrF9MRi3WBpfSLj7t4YyL1nxCIipQKtdJioz8CsQaVUTR7iLo1qezrnf4c B6AXRQXfsSZ2dqqBs0iufe3zEYbdP6n0u2hGMklsqyyQ11rSIHoQ6FVTcHgxHSgvQCqB FWEA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:dkim-signature; bh=+LwC+e/wfz0phwsvG3UA7Kxyo8TmV6yoBd0ExF7DlW4=; b=FD5C2wS1mcnqEJt5SZKeDZCJIbtn52hX+/ikrDLVFvl3reN7jVQqNeuhyTUK2iwdE3 HOHfBaVzoH5AwhegutFNxuO3kMxSs6ikByh64jo8fomatNewLe9bn4cxudkYLMUr99KX EoBaOrnojXz8siv8uSXlIbHkv9slD/AFDXxZeb5iQXz9zZF4U1xNmUBTep+5G8CFvvLJ CFOTb2FP9jKqsLxgdHeDorNuo0rSzEzxJo/9sngkyq6yzmBILoPJku+A9mpq2ruXgER8 8TFs5mnMgLYjyr+IaKeEiDYXbMhTnuVXF2zyxUFJyBolmrjdf5NcZGdbFDZTEOhEXIHS Ukeg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@intel-com.20150623.gappssmtp.com header.s=20150623 header.b=xmcCQWPv; 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 w123si4102761pfb.172.2019.02.14.17.37.16; Thu, 14 Feb 2019 17:37:31 -0800 (PST) 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; dkim=pass header.i=@intel-com.20150623.gappssmtp.com header.s=20150623 header.b=xmcCQWPv; 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 S2389690AbfBNSZT (ORCPT + 99 others); Thu, 14 Feb 2019 13:25:19 -0500 Received: from mail-ot1-f42.google.com ([209.85.210.42]:42519 "EHLO mail-ot1-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732475AbfBNSZT (ORCPT ); Thu, 14 Feb 2019 13:25:19 -0500 Received: by mail-ot1-f42.google.com with SMTP id i5so12120066oto.9 for ; Thu, 14 Feb 2019 10:25:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=intel-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=+LwC+e/wfz0phwsvG3UA7Kxyo8TmV6yoBd0ExF7DlW4=; b=xmcCQWPvi1tk0wx/+640HuxnyKNJnavefeN7OquFeviACdB+I3NqbWlo91L0PAtpu5 dkfsZFDXpnac5GQj9mR2JyrCdE/nqvVjjuapSYOpnTfpXQR4W8KdcCMmxx1Pw1FW+GdK hAyEznua/qD92KaKxMW+Gctzoswj4JliVw0t2unJCsxP2hq0mko/o8H15ftbOrKjwHDz V9vBTsDewBKoMSXzSFz1CIGExWB5ziAQOqO/lz2VshL6FqIdKqyZiQtYSMx3/b58rAKr WGs3KpMu2COOGyiAlGnMEgIbtBpudxVMdesC5okQpMLayZvGJxjzt3MK2ngjUfCbF6Bk Tx9Q== 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=+LwC+e/wfz0phwsvG3UA7Kxyo8TmV6yoBd0ExF7DlW4=; b=kt9zDY6LsLvzvJI3xsGzdcOR+sp+mMm+8/KqDHGcS7M7M2H4I7te1TtmFG1b27wkhi 54Dl9CvTe5GZkB4ZSm8vebwjZGdM/v5hTBza5oIE1PJbkH5eYLxv6BpZ/83JPX2abO6k iNnp/ICjXX4BH7edgu8oL78lwk94VnPJ3kPuLufzj6LEPy5PjUZ+bv8ONg1iKceoycsN Ee0idKlBFo5vo+OBjwTFRvC+5rLAurEjW/AxOVdg991RoRVrPwZRqeFITR+0/3vuJ3QW IwuDWBeUSUnx93NqGMTjhgxcZVjTh6jgA1Z9ebF4NFahqnqechXcCgtnkH7S646ZCU+8 v48g== X-Gm-Message-State: AHQUAuZazrRRbI9+6VoUmGC8VTmrwOLz9zhBFAANB11iJsUgtQJvBGfp zRro1sl2srk8iLUqRYF9mhDLVzjyz5LVj9V1c5rmuoVd X-Received: by 2002:a9d:4c85:: with SMTP id m5mr1976349otf.367.1550168718363; Thu, 14 Feb 2019 10:25:18 -0800 (PST) MIME-Version: 1.0 References: <20190214134622.GG4525@dhcp22.suse.cz> In-Reply-To: <20190214134622.GG4525@dhcp22.suse.cz> From: Dan Williams Date: Thu, 14 Feb 2019 10:25:07 -0800 Message-ID: Subject: Re: [Lsf-pc] [LSF/MM TOPIC] The end of the DAX experiment To: Michal Hocko Cc: lsf-pc@lists.linux-foundation.org, linux-xfs , linux-fsdevel , linux-ext4 , Linux Kernel Mailing List , linux-nvdimm Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Feb 14, 2019 at 5:46 AM Michal Hocko wrote: > > On Wed 06-02-19 13:12:59, Dan Williams wrote: > [...] > > * Userfaultfd for file-backed mappings and DAX > > I assume that other topics are meant to be FS track but this one is MM, > right? Yes, but I think it is the lowest priority of all the noted sub-topics in this proposal. The DAX-reflink discussion, where a given physical-page may need to be mapped into multiple inodes at different offsets, might be more fruitful to have as a joint discussion with MM.