36 	 * Order clearing SCHED_RESTART and list_empty_careful(&hctx->dispatch)  in __blk_mq_sched_restart()
38 	 * blk_mq_dispatch_rq_list(). So dispatch code won't see SCHED_RESTART,  in __blk_mq_sched_restart()
39 	 * meantime new request added to hctx->dispatch is missed to check in  in __blk_mq_sched_restart()
67 			goto dispatch;  in blk_mq_dispatch_hctx_list()
73 dispatch:  in blk_mq_dispatch_hctx_list()
84  * Returns -EAGAIN if hctx->dispatch was found non-empty and run_work has to
109 		if (!list_empty_careful(&hctx->dispatch)) {  in __blk_mq_do_dispatch_sched()
124 			 * same queue and if we didn't dispatch then there's  in __blk_mq_do_dispatch_sched()
163 		 * dispatch batching requests from same hctx at a time.  in __blk_mq_do_dispatch_sched()
212  * Returns -EAGAIN if hctx->dispatch was found non-empty and run_work has to
226 		if (!list_empty_careful(&hctx->dispatch)) {  in blk_mq_do_dispatch_ctx()
244 			 * same queue and if we didn't dispatch then there's  in blk_mq_do_dispatch_ctx()
261 		/* round robin for fair dispatch */  in blk_mq_do_dispatch_ctx()
276 	 * If we have previous entries on our dispatch list, grab them first for  in __blk_mq_sched_dispatch_requests()
277 	 * more fair dispatch.  in __blk_mq_sched_dispatch_requests()
279 	if (!list_empty_careful(&hctx->dispatch)) {  in __blk_mq_sched_dispatch_requests()
281 		if (!list_empty(&hctx->dispatch))  in __blk_mq_sched_dispatch_requests()
282 			list_splice_init(&hctx->dispatch, &rq_list);  in __blk_mq_sched_dispatch_requests()
288 	 * requests from the dispatch list. This is to avoid the case where  in __blk_mq_sched_dispatch_requests()
289 	 * we only ever dispatch a fraction of the requests available because  in __blk_mq_sched_dispatch_requests()
295 	 * We want to dispatch from the scheduler if there was nothing  in __blk_mq_sched_dispatch_requests()
296 	 * on the dispatch list or we were able to dispatch from the  in __blk_mq_sched_dispatch_requests()
297 	 * dispatch list.  in __blk_mq_sched_dispatch_requests()
328 	 * A return of -EAGAIN is an indication that hctx->dispatch is not  in blk_mq_sched_dispatch_requests()