tree a150d2fad9a831d7497b152cc6f88691bc4081d6
parent e86fe18ac945a121a548347c48f2397d7a2e5be5
author Paolo Bonzini <pbonzini@redhat.com> 1334232061 +0200
committer Kevin Wolf <kwolf@redhat.com> 1336638731 +0200

block: push bdrv_change_backing_file error checking up from drivers

This check applies to all drivers, but QED lacks it.

Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>