tree 851ab3d0f6f967b769ecdb87e5bbf22f4c7d0958
parent c0777fe18b08c3a6de0c53325d6b9b75ebb9de9a
author Fam Zheng <famz@redhat.com> 1377220490 +0800
committer Stefan Hajnoczi <stefanha@redhat.com> 1378473908 +0200

nbd: use BlockDriverState refcnt

Previously, nbd calls drive_get_ref() on the drive of bs. A BDS doesn't
always have associated dinfo, which nbd doesn't care either. We already
have BDS ref count, so use it to make it safe for a BDS w/o blockdev.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>