97 			   struct blk_flush_queue *fq, unsigned int flags);
165 				   struct blk_flush_queue *fq,  in blk_flush_complete_seq()  argument
169 	struct list_head *pending = &fq->flush_queue[fq->flush_pending_idx];  in blk_flush_complete_seq()
186 			fq->flush_pending_since = jiffies;  in blk_flush_complete_seq()
191 		list_move_tail(&rq->flush.list, &fq->flush_data_in_flight);  in blk_flush_complete_seq()
212 	blk_kick_flush(q, fq, cmd_flags);  in blk_flush_complete_seq()
221 	struct blk_flush_queue *fq = blk_get_flush_queue(q, flush_rq->mq_ctx);  in flush_end_io()  local
226 	spin_lock_irqsave(&fq->mq_flush_lock, flags);  in flush_end_io()
229 		fq->rq_status = error;  in flush_end_io()
230 		spin_unlock_irqrestore(&fq->mq_flush_lock, flags);  in flush_end_io()
240 	if (fq->rq_status != BLK_STS_OK)  in flush_end_io()
241 		error = fq->rq_status;  in flush_end_io()
250 	running = &fq->flush_queue[fq->flush_running_idx];  in flush_end_io()
251 	BUG_ON(fq->flush_pending_idx == fq->flush_running_idx);  in flush_end_io()
254 	fq->flush_running_idx ^= 1;  in flush_end_io()
261 		blk_flush_complete_seq(rq, fq, seq, error);  in flush_end_io()
264 	spin_unlock_irqrestore(&fq->mq_flush_lock, flags);  in flush_end_io()
280 static void blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq,  in blk_kick_flush()  argument
283 	struct list_head *pending = &fq->flush_queue[fq->flush_pending_idx];  in blk_kick_flush()
286 	struct request *flush_rq = fq->flush_rq;  in blk_kick_flush()
289 	if (fq->flush_pending_idx != fq->flush_running_idx || list_empty(pending))  in blk_kick_flush()
293 	if (!list_empty(&fq->flush_data_in_flight) &&  in blk_kick_flush()
295 			fq->flush_pending_since + FLUSH_PENDING_TIMEOUT))  in blk_kick_flush()
302 	fq->flush_pending_idx ^= 1;  in blk_kick_flush()
344 	struct blk_flush_queue *fq = blk_get_flush_queue(q, ctx);  in mq_flush_data_end_io()  local
355 	spin_lock_irqsave(&fq->mq_flush_lock, flags);  in mq_flush_data_end_io()
356 	blk_flush_complete_seq(rq, fq, REQ_FSEQ_DATA, error);  in mq_flush_data_end_io()
357 	spin_unlock_irqrestore(&fq->mq_flush_lock, flags);  in mq_flush_data_end_io()
376 	struct blk_flush_queue *fq = blk_get_flush_queue(q, rq->mq_ctx);  in blk_insert_flush()  local
428 	spin_lock_irq(&fq->mq_flush_lock);  in blk_insert_flush()
429 	blk_flush_complete_seq(rq, fq, REQ_FSEQ_ACTIONS & ~policy, 0);  in blk_insert_flush()
430 	spin_unlock_irq(&fq->mq_flush_lock);  in blk_insert_flush()
459 	struct blk_flush_queue *fq;  in blk_alloc_flush_queue()  local
462 	fq = kzalloc_node(sizeof(*fq), flags, node);  in blk_alloc_flush_queue()
463 	if (!fq)  in blk_alloc_flush_queue()
466 	spin_lock_init(&fq->mq_flush_lock);  in blk_alloc_flush_queue()
469 	fq->flush_rq = kzalloc_node(rq_sz, flags, node);  in blk_alloc_flush_queue()
470 	if (!fq->flush_rq)  in blk_alloc_flush_queue()
473 	INIT_LIST_HEAD(&fq->flush_queue[0]);  in blk_alloc_flush_queue()
474 	INIT_LIST_HEAD(&fq->flush_queue[1]);  in blk_alloc_flush_queue()
475 	INIT_LIST_HEAD(&fq->flush_data_in_flight);  in blk_alloc_flush_queue()
477 	lockdep_register_key(&fq->key);  in blk_alloc_flush_queue()
478 	lockdep_set_class(&fq->mq_flush_lock, &fq->key);  in blk_alloc_flush_queue()
480 	return fq;  in blk_alloc_flush_queue()
483 	kfree(fq);  in blk_alloc_flush_queue()
488 void blk_free_flush_queue(struct blk_flush_queue *fq)  in blk_free_flush_queue()  argument
491 	if (!fq)  in blk_free_flush_queue()
494 	lockdep_unregister_key(&fq->key);  in blk_free_flush_queue()
495 	kfree(fq->flush_rq);  in blk_free_flush_queue()
496 	kfree(fq);  in blk_free_flush_queue()