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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DAE6C43217 for ; Thu, 4 Nov 2021 17:36:12 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BEC28611C0 for ; Thu, 4 Nov 2021 17:36:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org BEC28611C0 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 736CC403EE; Thu, 4 Nov 2021 17:36:11 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id I9SP-VU-tsUr; Thu, 4 Nov 2021 17:36:10 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp2.osuosl.org (Postfix) with ESMTPS id DFCA9400DD; Thu, 4 Nov 2021 17:36:09 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id B3696C0012; Thu, 4 Nov 2021 17:36:09 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [IPv6:2605:bc80:3010::138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 1D607C000E for ; Thu, 4 Nov 2021 17:36:08 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 06B5F81A24 for ; Thu, 4 Nov 2021 17:36:08 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WudlVcR9JMtY for ; Thu, 4 Nov 2021 17:36:03 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by smtp1.osuosl.org (Postfix) with ESMTPS id 4522981948 for ; Thu, 4 Nov 2021 17:36:03 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id ACAA76732D; Thu, 4 Nov 2021 18:35:59 +0100 (CET) Date: Thu, 4 Nov 2021 18:35:59 +0100 From: Christoph Hellwig To: "Darrick J. Wong" Subject: Re: futher decouple DAX from block devices Message-ID: <20211104173559.GB31740@lst.de> References: <20211018044054.1779424-1-hch@lst.de> <21ff4333-e567-2819-3ae0-6a2e83ec7ce6@sandeen.net> <20211104081740.GA23111@lst.de> <20211104173417.GJ2237511@magnolia> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20211104173417.GJ2237511@magnolia> User-Agent: Mutt/1.5.17 (2007-11-01) Cc: nvdimm@lists.linux.dev, Mike Snitzer , linux-s390@vger.kernel.org, linux-erofs@lists.ozlabs.org, Eric Sandeen , virtualization@lists.linux-foundation.org, linux-xfs@vger.kernel.org, dm-devel@redhat.com, linux-fsdevel@vger.kernel.org, Dan Williams , linux-ext4@vger.kernel.org, Ira Weiny , Christoph Hellwig X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" On Thu, Nov 04, 2021 at 10:34:17AM -0700, Darrick J. Wong wrote: > /me wonders, are block devices going away? Will mkfs.xfs have to learn > how to talk to certain chardevs? I guess jffs2 and others already do > that kind of thing... but I suppose I can wait for the real draft to > show up to ramble further. ;) Right now I've mostly been looking into the kernel side. An no, I do not expect /dev/pmem* to go away as you'll still need it for a not DAX aware file system and/or application (such as mkfs initially). But yes, just pointing mkfs to the chardev should be doable with very little work. We can point it to a regular file after all. _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization