On 9/9/19 6:50 AM, Jackie Liu wrote: > Sqo_thread will get sqring in batches, which will cause > ctx->cached_sq_head to be added in batches. if one of these > sqes is set with the DRAIN flag, then he will never get a > chance to process, and finally sqo_thread will not exit. This (and 2/2) look good to me, and they test out fine. Thanks! Applied for 5.4. -- Jens Axboe