219 static void flush_end_io(struct request *flush_rq, int error)  in flush_end_io()  argument
221 	struct request_queue *q = flush_rq->q;  in flush_end_io()
226 	struct blk_flush_queue *fq = blk_get_flush_queue(q, flush_rq->mq_ctx);  in flush_end_io()
230 		flush_rq->tag = -1;  in flush_end_io()
240 		elv_completed_request(q, flush_rq);  in flush_end_io()
289 	struct request *flush_rq = fq->flush_rq;  in blk_kick_flush()  local
307 	blk_rq_init(q, flush_rq);  in blk_kick_flush()
314 		flush_rq->mq_ctx = first_rq->mq_ctx;  in blk_kick_flush()
315 		flush_rq->tag = first_rq->tag;  in blk_kick_flush()
318 	flush_rq->cmd_type = REQ_TYPE_FS;  in blk_kick_flush()
319 	flush_rq->cmd_flags = WRITE_FLUSH | REQ_FLUSH_SEQ;  in blk_kick_flush()
320 	flush_rq->rq_disk = first_rq->rq_disk;  in blk_kick_flush()
321 	flush_rq->end_io = flush_end_io;  in blk_kick_flush()
323 	return blk_flush_queue_rq(flush_rq, false);  in blk_kick_flush()
505 	fq->flush_rq = kzalloc_node(rq_sz, GFP_KERNEL, node);  in blk_alloc_flush_queue()
506 	if (!fq->flush_rq)  in blk_alloc_flush_queue()
527 	kfree(fq->flush_rq);  in blk_free_flush_queue()