tree ae6403a15d51975e87289f0e6c24cbe4cac90f1a
parent 40365552c2fceacc9800ec9a87b9ead516a9a6ce
author Kevin Wolf <kwolf@redhat.com> 1421429021 +0100
committer Kevin Wolf <kwolf@redhat.com> 1450445682 +0100

block: Allow references for backing files

For bs->file, using references to existing BDSes has been possible for a
while already. This patch enables the same for bs->backing.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>