96 			   struct blk_flush_queue *fq, unsigned int flags);
156 				   struct blk_flush_queue *fq,  in blk_flush_complete_seq()  argument
160 	struct list_head *pending = &fq->flush_queue[fq->flush_pending_idx];  in blk_flush_complete_seq()
177 			fq->flush_pending_since = jiffies;  in blk_flush_complete_seq()
182 		list_move_tail(&rq->flush.list, &fq->flush_data_in_flight);  in blk_flush_complete_seq()
203 	blk_kick_flush(q, fq, cmd_flags);  in blk_flush_complete_seq()
212 	struct blk_flush_queue *fq = blk_get_flush_queue(q, flush_rq->mq_ctx);  in flush_end_io()  local
216 	spin_lock_irqsave(&fq->mq_flush_lock, flags);  in flush_end_io()
219 		fq->rq_status = error;  in flush_end_io()
220 		spin_unlock_irqrestore(&fq->mq_flush_lock, flags);  in flush_end_io()
224 	if (fq->rq_status != BLK_STS_OK)  in flush_end_io()
225 		error = fq->rq_status;  in flush_end_io()
229 		blk_mq_tag_set_rq(hctx, flush_rq->tag, fq->orig_rq);  in flush_end_io()
236 	running = &fq->flush_queue[fq->flush_running_idx];  in flush_end_io()
237 	BUG_ON(fq->flush_pending_idx == fq->flush_running_idx);  in flush_end_io()
240 	fq->flush_running_idx ^= 1;  in flush_end_io()
247 		blk_flush_complete_seq(rq, fq, seq, error);  in flush_end_io()
250 	fq->flush_queue_delayed = 0;  in flush_end_io()
251 	spin_unlock_irqrestore(&fq->mq_flush_lock, flags);  in flush_end_io()
267 static void blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq,  in blk_kick_flush()  argument
270 	struct list_head *pending = &fq->flush_queue[fq->flush_pending_idx];  in blk_kick_flush()
273 	struct request *flush_rq = fq->flush_rq;  in blk_kick_flush()
276 	if (fq->flush_pending_idx != fq->flush_running_idx || list_empty(pending))  in blk_kick_flush()
285 	if (!list_empty(&fq->flush_data_in_flight) && q->elevator &&  in blk_kick_flush()
287 			fq->flush_pending_since + FLUSH_PENDING_TIMEOUT))  in blk_kick_flush()
294 	fq->flush_pending_idx ^= 1;  in blk_kick_flush()
310 		fq->orig_rq = first_rq;  in blk_kick_flush()
332 	struct blk_flush_queue *fq = blk_get_flush_queue(q, ctx);  in mq_flush_data_end_io()  local
343 	spin_lock_irqsave(&fq->mq_flush_lock, flags);  in mq_flush_data_end_io()
344 	blk_flush_complete_seq(rq, fq, REQ_FSEQ_DATA, error);  in mq_flush_data_end_io()
345 	spin_unlock_irqrestore(&fq->mq_flush_lock, flags);  in mq_flush_data_end_io()
364 	struct blk_flush_queue *fq = blk_get_flush_queue(q, rq->mq_ctx);  in blk_insert_flush()  local
416 	spin_lock_irq(&fq->mq_flush_lock);  in blk_insert_flush()
417 	blk_flush_complete_seq(rq, fq, REQ_FSEQ_ACTIONS & ~policy, 0);  in blk_insert_flush()
418 	spin_unlock_irq(&fq->mq_flush_lock);  in blk_insert_flush()
477 	struct blk_flush_queue *fq;  in blk_alloc_flush_queue()  local
480 	fq = kzalloc_node(sizeof(*fq), flags, node);  in blk_alloc_flush_queue()
481 	if (!fq)  in blk_alloc_flush_queue()
484 	spin_lock_init(&fq->mq_flush_lock);  in blk_alloc_flush_queue()
487 	fq->flush_rq = kzalloc_node(rq_sz, flags, node);  in blk_alloc_flush_queue()
488 	if (!fq->flush_rq)  in blk_alloc_flush_queue()
491 	INIT_LIST_HEAD(&fq->flush_queue[0]);  in blk_alloc_flush_queue()
492 	INIT_LIST_HEAD(&fq->flush_queue[1]);  in blk_alloc_flush_queue()
493 	INIT_LIST_HEAD(&fq->flush_data_in_flight);  in blk_alloc_flush_queue()
495 	return fq;  in blk_alloc_flush_queue()
498 	kfree(fq);  in blk_alloc_flush_queue()
503 void blk_free_flush_queue(struct blk_flush_queue *fq)  in blk_free_flush_queue()  argument
506 	if (!fq)  in blk_free_flush_queue()
509 	kfree(fq->flush_rq);  in blk_free_flush_queue()
510 	kfree(fq);  in blk_free_flush_queue()