Received: by 2002:a25:4158:0:0:0:0:0 with SMTP id o85csp687194yba; Thu, 16 May 2019 07:25:08 -0700 (PDT) X-Google-Smtp-Source: APXvYqwbeGLspR7ZVswhOK7G4NwVZlv0enJcJb0itErxdNFExvoHTZDxh3PZHLWhatA+4o2M6g5n X-Received: by 2002:aa7:8c1a:: with SMTP id c26mr53974972pfd.25.1558016708530; Thu, 16 May 2019 07:25:08 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1558016708; cv=none; d=google.com; s=arc-20160816; b=ZfLFsOXYnm3p1gO0OEUlr4cg/V+NL/JuqEnyuTAa8D1IUdSEmfQyfmyzmyYNWY/R1e CPf01S1qjyXFUgodqp9QInOg3U3QjJ+urHxa/nWWjxIRIcQHKsjZvAU8FqHLq37QGH7l 0PPRO6ghQk1IYyKKMy9ykjdX4+PHKwndfgAJHig5J5TzOux5QYwD7NqJV8O0v4lDYkMP c22rbFvx7Rm3lFBy69JaZdCK2IpZIwtvT3DSgSXdRBfH3TmF4kELnUVlhmn6H2QZWaQE AHsPiHOzvmZooVAJiwHoZ501gneWiudPikcyuDGMk07f3+WYtutIgTN+ZdIOAakXQ+qN VRNg== 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=19SemvXMr2hAM3iQpKz8EnFe5sWgpsIech9woJeSe9E=; b=A5v3ODOEmtbraS9jPM3jE0iMLyo0Smfe2u20vGPknskwJofF0Fm4kTo5j4V7Nu36Ir +sRiJpbXYXdlsw+ykRlrhnQEe0cOPFS//iRprIesWH9DyVwL6sEnw3yGACcHHEamGU3m v7X6pbkam1w7f7L5zVioXDzOs3+ZB1ys49iaKPF6Q8oL1SZG0FzbqknWSry5GY92Ws4C ysbwvNhMqXRXB8E12IFrkDKJgNw5nRqwDEBtiGX3tg8flttZxgucBkM2JcHw13rSRJJM vPuxQbj8CBcQ26viR1OivtBnhN59nfJK6zY3XpoualNvGeS9MUF1g5w9iCLdw14zzJvj /+CQ== 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=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id k23si2902374pls.88.2019.05.16.07.24.52; Thu, 16 May 2019 07:25:08 -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=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727037AbfEPOXp (ORCPT + 99 others); Thu, 16 May 2019 10:23:45 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55898 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726692AbfEPOXp (ORCPT ); Thu, 16 May 2019 10:23:45 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id D2AD93083392; Thu, 16 May 2019 14:23:44 +0000 (UTC) Received: from horse.redhat.com (unknown [10.18.25.29]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8F70F5D6A9; Thu, 16 May 2019 14:23:42 +0000 (UTC) Received: by horse.redhat.com (Postfix, from userid 10451) id 20E57220386; Thu, 16 May 2019 10:23:42 -0400 (EDT) Date: Thu, 16 May 2019 10:23:42 -0400 From: Vivek Goyal To: Dan Williams Cc: linux-fsdevel , Linux Kernel Mailing List , KVM list , linux-nvdimm , Steven Whitehouse , "Dr. David Alan Gilbert" , Stefan Hajnoczi , Miklos Szeredi Subject: Re: [PATCH v2 12/30] dax: remove block device dependencies Message-ID: <20190516142342.GA31638@redhat.com> References: <20190515192715.18000-1-vgoyal@redhat.com> <20190515192715.18000-13-vgoyal@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.3 (2019-02-01) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.44]); Thu, 16 May 2019 14:23:45 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 15, 2019 at 05:21:51PM -0700, Dan Williams wrote: [..] > It just seems to me that we should stop pretending that the > filesystem-dax facility requires block devices and try to move this > functionality to generically use a dax device across all interfaces. That sounds reasonable and will help with our use case where we don't have the block device at all. Vivek