Instead of bdrv_getlength().
Commit 57322b7 did this all over block, but one more bdrv_getlength()
has crept in since.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Benoît Canet <benoit.canet@nodalink.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>