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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 09799C32771 for ; Wed, 15 Jan 2020 21:08:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D01572084D for ; Wed, 15 Jan 2020 21:08:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Ny8mOJC2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729539AbgAOVI4 (ORCPT ); Wed, 15 Jan 2020 16:08:56 -0500 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:32423 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729436AbgAOVI4 (ORCPT ); Wed, 15 Jan 2020 16:08:56 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579122535; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=N75/xtseFm0C8W8jITG046cI1TLgiVpisIBQsGTwX3Q=; b=Ny8mOJC2/GdEqthNxvDyM4z2GUJh/aN0Qj5n4O2DEYb69NJ5kNJmw9kOUrB4sgePuFnreO l1R95VG7ODq0sKbSNjrnZNabWbpHqy6QWSpynPODDvpObrtJthLOs1haX/ySU9kArXV4H+ gPjWiK2Z1UgUqI9iiuArWGCaTiTrxjk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-124-OgVfptpyPr2T97swFAWMag-1; Wed, 15 Jan 2020 16:08:52 -0500 X-MC-Unique: OgVfptpyPr2T97swFAWMag-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B474B1005510; Wed, 15 Jan 2020 21:08:50 +0000 (UTC) Received: from segfault.boston.devel.redhat.com (segfault.boston.devel.redhat.com [10.19.60.26]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 9DFAAA4B60; Wed, 15 Jan 2020 21:08:44 +0000 (UTC) From: Jeff Moyer To: Dan Williams Cc: Vivek Goyal , Jan Kara , "Darrick J. Wong" , Christoph Hellwig , Dave Chinner , Miklos Szeredi , linux-nvdimm , Linux Kernel Mailing List , "Dr. David Alan Gilbert" , virtio-fs@redhat.com, Stefan Hajnoczi , linux-fsdevel Subject: Re: [PATCH 01/19] dax: remove block device dependencies References: <20200107180101.GC15920@redhat.com> <20200107183307.GD15920@redhat.com> <20200109112447.GG27035@quack2.suse.cz> <20200114203138.GA3145@redhat.com> <20200114212805.GB3145@redhat.com> <20200115195617.GA4133@redhat.com> X-PGP-KeyID: 1F78E1B4 X-PGP-CertKey: F6FE 280D 8293 F72C 65FD 5A58 1FF8 A7CA 1F78 E1B4 Date: Wed, 15 Jan 2020 16:08:43 -0500 In-Reply-To: (Dan Williams's message of "Wed, 15 Jan 2020 12:17:40 -0800") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Hi, Dan, Dan Williams writes: > I'm going to take a look at how hard it would be to develop a kpartx > fallback in udev. If that can live across the driver transition then > maybe this can be a non-event for end users that already have that > udev update deployed. I just wanted to remind you that label-less dimms still exist, and are still being shipped. For those devices, the only way to subdivide the storage is via partitioning. -Jeff