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Re: [PATCH v2 12/33] block: Unify bdrv_child_cb_detach()

From: Eric Blake
Subject: Re: [PATCH v2 12/33] block: Unify bdrv_child_cb_detach()
Date: Wed, 5 Feb 2020 11:26:01 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1

On 2/4/20 11:08 AM, Max Reitz wrote:
Make bdrv_child_cb_detach() call bdrv_backing_detach() for children with
a COW role (and drop the reverse call from bdrv_backing_detach()), so it
can be used for any child (with a proper role set).

Because so far no child has a proper role set, we need a temporary new
callback for child_backing.detach that ensures bdrv_backing_detach() is
called for all COW children that do not have their role set yet.

Signed-off-by: Max Reitz <address@hidden>
  block.c | 15 ++++++++++++++-
  1 file changed, 14 insertions(+), 1 deletion(-)

Looks oddly familiar after 11/33 :)
Reviewed-by: Eric Blake <address@hidden>

Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org

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