From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-fsdevel-owner@kernel.org>
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on
	aws-us-west-2-korg-lkml-1.web.codeaurora.org
Received: from vger.kernel.org (vger.kernel.org [23.128.96.18])
	by smtp.lore.kernel.org (Postfix) with ESMTP id 93AD7C433EF
	for <linux-fsdevel@archiver.kernel.org>; Fri, 11 Mar 2022 07:42:45 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1344718AbiCKHnq (ORCPT
        <rfc822;linux-fsdevel@archiver.kernel.org>);
        Fri, 11 Mar 2022 02:43:46 -0500
Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51918 "EHLO
        lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S235951AbiCKHnp (ORCPT
        <rfc822;linux-fsdevel@vger.kernel.org>);
        Fri, 11 Mar 2022 02:43:45 -0500
Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133])
        by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A91409A4F1;
        Thu, 10 Mar 2022 23:42:41 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
        d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version
        :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To:
        Content-Transfer-Encoding:Content-ID:Content-Description;
        bh=VVug1buP78q4tyvIbkqKy4ppD9C8BCq/Po/kMwuj18E=; b=T+2gGuTcntTk610rADrW7qXAsS
        u3LjiQtIlf7u2fzJOZ+VVcpl20DVdTfgZHTK//CXr+RRyDqiVexK+vQhVPwYSgYUrYyn101NR6sgz
        5pBiEhDx3to5cIzFwxbubmPFe4+jWkvrrUpwi2LQuDqo9+jlMpv03oSh8g+avesluoZUA2C7CRQxP
        Dh2J0MHiNxCN1UCke3SzvYK55IU67U8SE+/byOmbnmymbaVIaNdImKz9wZpfTV1xCWLOQv5heuiTv
        3GOK4IYDhaj8H95i6edYG/6TWswKq0ZKZbqJ126Ec6r61nDA+forTVMTzheeR5goR9IsFzzHxxh9r
        e+KJPHrA==;
Received: from hch by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux))
        id 1nSZv1-00FO8j-EK; Fri, 11 Mar 2022 07:42:35 +0000
Date:   Thu, 10 Mar 2022 23:42:35 -0800
From:   Christoph Hellwig <hch@infradead.org>
To:     Damien Le Moal <damien.lemoal@opensource.wdc.com>
Cc:     Javier =?iso-8859-1?Q?Gonz=E1lez?= <javier@javigon.com>,
        Keith Busch <kbusch@kernel.org>,
        James Bottomley <James.Bottomley@hansenpartnership.com>,
        Luis Chamberlain <mcgrof@kernel.org>,
        Dave Chinner <david@fromorbit.com>,
        linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        lsf-pc@lists.linux-foundation.org,
        Matias =?iso-8859-1?Q?Bj=F8rling?= <matias.bjorling@wdc.com>,
        Damien Le Moal <damien.lemoal@wdc.com>,
        Bart Van Assche <bvanassche@acm.org>,
        Adam Manzanares <a.manzanares@samsung.com>,
        Keith Busch <keith.busch@wdc.com>,
        Johannes Thumshirn <johannes.thumshirn@wdc.com>,
        Naohiro Aota <naohiro.aota@wdc.com>,
        Pankaj Raghav <pankydev8@gmail.com>,
        Kanchan Joshi <joshi.k@samsung.com>,
        Nitesh Shetty <nj.shetty@samsung.com>
Subject: Re: [LSF/MM/BPF BoF] BoF for Zoned Storage
Message-ID: <Yir9a8HusXWApk5l@infradead.org>
References: <69932637edee8e6d31bafa5fd39e19a9790dd4ab.camel@HansenPartnership.com>
 <DD05D9B0-195F-49EF-80DA-1AA0E4FA281F@javigon.com>
 <20220307151556.GB3260574@dhcp-10-100-145-180.wdc.com>
 <8f8255c3-5fa8-310b-9925-1e4e8b105547@opensource.wdc.com>
 <20220311072101.k52rkmsnecolsoel@ArmHalley.localdomain>
 <61c1b49c-cd34-614a-876a-29b796e4ff0d@opensource.wdc.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <61c1b49c-cd34-614a-876a-29b796e4ff0d@opensource.wdc.com>
X-SRS-Rewrite: SMTP reverse-path rewritten from <hch@infradead.org> by bombadil.infradead.org. See http://www.infradead.org/rpr.html
Precedence: bulk
List-ID: <linux-fsdevel.vger.kernel.org>
X-Mailing-List: linux-fsdevel@vger.kernel.org

On Fri, Mar 11, 2022 at 04:39:12PM +0900, Damien Le Moal wrote:
> > (we need to look into it). F2FS will use the emulation layer for now;
> > only !PO2 devices will pay the price. We will add a knob in the block
> > layer so that F2FS can force enable the emulation.
> 
> No. The FS has no business changing the device.

And nvme will not support any kind of emulation if that wasn't clear.