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References: <20180224154033.29559-1-mreitz@redhat.com>
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From: Eric Blake <eblake@redhat.com>
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Date: Sat, 24 Feb 2018 15:09:05 -0600
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Subject: Re: [Qemu-devel] [PATCH v3 6/7] block: Handle null backing link
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To: Max Reitz <mreitz@redhat.com>, qemu-block@nongnu.org
Cc: qemu-devel@nongnu.org, Markus Armbruster <armbru@redhat.com>, Alberto Garcia <berto@igalia.com>, Michael Roth <mdroth@linux.vnet.ibm.com>

On 02/24/2018 09:40 AM, Max Reitz wrote:
> Instead of converting all "backing": null instances into "backing": "",
> handle a null value directly in bdrv_open_inherit().
> 
> This enables explicitly null backing links for json:{} filenames.
> 
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> Reviewed-by: Alberto Garcia <berto@igalia.com>
> ---
>   block.c                    |  4 +++-
>   blockdev.c                 | 14 --------------
>   tests/qemu-iotests/089     | 20 ++++++++++++++++++++
>   tests/qemu-iotests/089.out |  8 ++++++++
>   4 files changed, 31 insertions(+), 15 deletions(-)
> 

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org