Merge pull request #6742 from dillaman/wip-13913

librbd: automatically flush IO after blocking write operations

Reviewed-by: Josh Durgin <jdurgin@redhat.com>

diff --cc src/librbd/AioImageRequestWQ.cc
Simple merge

diff --cc src/librbd/AioImageRequestWQ.h
Simple merge

diff --cc src/librbd/operation/SnapshotCreateRequest.cc
Simple merge