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
224 	spin_lock_irqsave(&fq->mq_flush_lock, flags);  in flush_end_io()
227 		fq->rq_status = error;  in flush_end_io()
228 		spin_unlock_irqrestore(&fq->mq_flush_lock, flags);  in flush_end_io()
239 	if (fq->rq_status != BLK_STS_OK) {  in flush_end_io()
240 		error = fq->rq_status;  in flush_end_io()
241 		fq->rq_status = BLK_STS_OK;  in flush_end_io()
251 	running = &fq->flush_queue[fq->flush_running_idx];  in flush_end_io()
252 	BUG_ON(fq->flush_pending_idx == fq->flush_running_idx);  in flush_end_io()
255 	fq->flush_running_idx ^= 1;  in flush_end_io()
262 		blk_flush_complete_seq(rq, fq, seq, error);  in flush_end_io()
265 	spin_unlock_irqrestore(&fq->mq_flush_lock, flags);  in flush_end_io()
286 static void blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq,  in blk_kick_flush()  argument
289 	struct list_head *pending = &fq->flush_queue[fq->flush_pending_idx];  in blk_kick_flush()
292 	struct request *flush_rq = fq->flush_rq;  in blk_kick_flush()
295 	if (fq->flush_pending_idx != fq->flush_running_idx || list_empty(pending))  in blk_kick_flush()
299 	if (!list_empty(&fq->flush_data_in_flight) &&  in blk_kick_flush()
301 			fq->flush_pending_since + FLUSH_PENDING_TIMEOUT))  in blk_kick_flush()
308 	fq->flush_pending_idx ^= 1;  in blk_kick_flush()
358 	struct blk_flush_queue *fq = blk_get_flush_queue(q, ctx);  in mq_flush_data_end_io()  local
369 	spin_lock_irqsave(&fq->mq_flush_lock, flags);  in mq_flush_data_end_io()
370 	blk_flush_complete_seq(rq, fq, REQ_FSEQ_DATA, error);  in mq_flush_data_end_io()
371 	spin_unlock_irqrestore(&fq->mq_flush_lock, flags);  in mq_flush_data_end_io()
390 	struct blk_flush_queue *fq = blk_get_flush_queue(q, rq->mq_ctx);  in blk_insert_flush()  local
442 	spin_lock_irq(&fq->mq_flush_lock);  in blk_insert_flush()
443 	blk_flush_complete_seq(rq, fq, REQ_FSEQ_ACTIONS & ~policy, 0);  in blk_insert_flush()
444 	spin_unlock_irq(&fq->mq_flush_lock);  in blk_insert_flush()
473 	struct blk_flush_queue *fq;  in blk_alloc_flush_queue()  local
476 	fq = kzalloc_node(sizeof(*fq), flags, node);  in blk_alloc_flush_queue()
477 	if (!fq)  in blk_alloc_flush_queue()
480 	spin_lock_init(&fq->mq_flush_lock);  in blk_alloc_flush_queue()
483 	fq->flush_rq = kzalloc_node(rq_sz, flags, node);  in blk_alloc_flush_queue()
484 	if (!fq->flush_rq)  in blk_alloc_flush_queue()
487 	INIT_LIST_HEAD(&fq->flush_queue[0]);  in blk_alloc_flush_queue()
488 	INIT_LIST_HEAD(&fq->flush_queue[1]);  in blk_alloc_flush_queue()
489 	INIT_LIST_HEAD(&fq->flush_data_in_flight);  in blk_alloc_flush_queue()
491 	lockdep_register_key(&fq->key);  in blk_alloc_flush_queue()
492 	lockdep_set_class(&fq->mq_flush_lock, &fq->key);  in blk_alloc_flush_queue()
494 	return fq;  in blk_alloc_flush_queue()
497 	kfree(fq);  in blk_alloc_flush_queue()
502 void blk_free_flush_queue(struct blk_flush_queue *fq)  in blk_free_flush_queue()  argument
505 	if (!fq)  in blk_free_flush_queue()
508 	lockdep_unregister_key(&fq->key);  in blk_free_flush_queue()
509 	kfree(fq->flush_rq);  in blk_free_flush_queue()
510 	kfree(fq);  in blk_free_flush_queue()