On 1/28/21 10:29 PM, Can Guo wrote: > On second thought, actually the 1st fix alone is enough to eliminate the > race condition. Because blk_mq_tagset_busy_iter() only iterates over all > requests which are not in IDLE state, if blk_mq_start_request() is called > within the protection of host spin lock, ufshcd_compl_tm() shall not run > into the scenario where req->end_io_data is set but > REG_UTP_TASK_REQ_DOOR_BELL > has not been set. What do you think? That sounds reasonable to me. Thanks, Bart.
