XenVBD #40 (Jun 20, 2014 10:01:26 AM)

Force calling BlockRingPoll as DPC may not run.
Cleanup PreparedReqs before closing the ring
Add extra state to frontend transition to allow reset to cleanup

Signed-off-by: Ben Chalmers <Ben.Chalmers@citrix.com>
Merge pull request #66 from benchalmers/xenvbd40

XenVBD #40 (Jun 20, 2014 10:01:26 AM)

Approved-By:  Ben.Chalmers@citrix.com