Max Reitz 061959e8da block: Make some BB functions fall back to BBRS
If there is no BDS tree attached to a BlockBackend, functions that can
do so should fall back to the BlockBackendRootState structure.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-10-23 18:18:23 +02:00
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