On Wed, Feb 03, 2016 at 04:35:03PM +0000, Wenbo Wang wrote: > For async io (executed by run_work worker) it should work. However for sync > io in blk_mq_run_hw_queue, this seems not help, there is still a window.
Alright, for lack of a better way to sync a stopped queue, the driver's indication looks like the best we can do at this point.
