tree c3887a25b74b5b769911376bc588a819f857ee09
parent 8d24cce1e325c4bd47a8b1984d6db599f5a7a8e9
author Fam Zheng <famz@redhat.com> 1400851786 +0800
committer Stefan Hajnoczi <stefanha@redhat.com> 1401280126 +0200

block: Use bdrv_set_backing_hd everywhere

We need to handle the coming backing_blocker properly, so don't open
code the assignment, instead, call bdrv_set_backing_hd to change
backing_hd.

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