nbd will be closed in nbd poller function asychronously.
Unify the stop process of HARDDISC and SOFTDISC in same place.
Prepare for following patch.
Signed-off-by: MengjinWu <mengjin.wu@intel.com>
Change-Id: Ida33ff6d081e68290cfa393c0c47fe7af545958b
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/8036
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-by: GangCao <gang.cao@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Ziye Yang <ziye.yang@intel.com>
e54df32e6b