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Date:   Thu, 15 Jul 2021 11:04:31 +0100
From:   Stefan Hajnoczi <stefanha@redhat.com>
To:     Vivek Goyal <vgoyal@redhat.com>
Cc:     viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org, hch@lst.de, virtio-fs@redhat.com,
        v9fs-developer@lists.sourceforge.net, miklos@szeredi.hu
Subject: Re: [PATCH v3 2/3] init: allow mounting arbitrary non-blockdevice
 filesystems as root
Message-ID: <YPAIL1FJk6mzGXBQ@stefanha-x1.localdomain>
References: <20210714202321.59729-1-vgoyal@redhat.com>
 <20210714202321.59729-3-vgoyal@redhat.com>
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On Wed, Jul 14, 2021 at 04:23:20PM -0400, Vivek Goyal wrote:
> From: Christoph Hellwig <hch@lst.de>
>=20
> Currently the only non-blockdevice filesystems that can be used as the
> initial root filesystem are NFS and CIFS, which use the magic
> "root=3D/dev/nfs" and "root=3D/dev/cifs" syntax that requires the root
> device file system details to come from filesystem specific kernel
> command line options.
>=20
> Add a little bit of new code that allows to just pass arbitrary
> string mount options to any non-blockdevice filesystems so that it can
> be mounted as the root file system.
>=20
> For example a virtiofs root file system can be mounted using the
> following syntax:
>=20
> "root=3Dmyfs rootfstype=3Dvirtiofs rw"
>=20
> Based on an earlier patch from Vivek Goyal <vgoyal@redhat.com>.
>=20
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>  init/do_mounts.c | 43 +++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 43 insertions(+)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

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