On Tue, Aug 22 2017, Bart Van Assche wrote: > On Sat, 2017-08-05 at 14:56 +0800, Ming Lei wrote: > > easy to cause queue busy becasue of the small > ^^^^^^^ > because? > > > -static void blk_mq_do_dispatch(struct request_queue *q, > > - struct elevator_queue *e, > > - struct blk_mq_hw_ctx *hctx) > > +static inline void blk_mq_do_dispatch_sched(struct request_queue *q, > > + struct elevator_queue *e, > > + struct blk_mq_hw_ctx *hctx) > > { > > LIST_HEAD(rq_list); > > Why to declare this function "inline"? Are you sure that the compiler > is not smart enough to decide on its own whether or not to inline this > function? Ditto in other places, too. Kill them. -- Jens Axboe