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Re: [Qemu-devel] [PATCH 03/10] mirror: Fix permissions for removing mirr

From: Eric Blake
Subject: Re: [Qemu-devel] [PATCH 03/10] mirror: Fix permissions for removing mirror_top_bs
Date: Mon, 6 Mar 2017 14:13:13 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0

On 03/06/2017 10:21 AM, Kevin Wolf wrote:
> mirror_top_bs takes write permissions on its backing file, which can
> make it impossible to attach that backing file node to another parent.
> However, this is exactly what needs to be done in order to remove
> mirror_top_bs from the backing chain. So give up the write permission
> first.
> Signed-off-by: Kevin Wolf <address@hidden>
> ---
>  block/mirror.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)

Reviewed-by: Eric Blake <address@hidden>

Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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