On Sat, Jan 22, 2022 at 07:10:48PM +0800, Ming Lei wrote: > After blk_cleanup_queue() returns, disk may not be released yet, so > probably bio may still be submitted and ->q_usage_counter may be > touched, so far this way seems safe, but not good from API's viewpoint. > > Move the release ofq_usage_counter into blk_queue_release(). Looks good, Reviewed-by: Christoph Hellwig <hch@xxxxxx>