block: add a poll_fn callback to struct request_queue

That we we can also poll non blk-mq queues. Mostly needed for the NVMe multipath code, but could also be useful elsewhere.

Christoph Hellwig committed 9 years ago

Commit ea435e11 parent 8ddcd658 files · +25 −16Browse files

Showing the changes to include/linux/blkdev.h (1 of 8 files). Show all

Unified · Split

 typedef void (request_fn_proc) (struct request_queue *q);
 typedef blk_qc_t (make_request_fn) (struct request_queue *q, struct bio *bio);
+typedef bool (poll_q_fn) (struct request_queue *q, blk_qc_t);
 typedef int (prep_rq_fn) (struct request_queue *, struct request *);
 typedef void (unprep_rq_fn) (struct request_queue *, struct request *);
 	request_fn_proc		*request_fn;
 	make_request_fn		*make_request_fn;
+	poll_q_fn		*poll_fn;
 	prep_rq_fn		*prep_rq_fn;
 	unprep_rq_fn		*unprep_rq_fn;
 	softirq_done_fn		*softirq_done_fn;
 int blk_status_to_errno(blk_status_t status);
 blk_status_t errno_to_blk_status(int errno);
-bool blk_mq_poll(struct request_queue *q, blk_qc_t cookie);
+bool blk_poll(struct request_queue *q, blk_qc_t cookie);
 static inline struct request_queue *bdev_get_queue(struct block_device *bdev)
 {

Keyboard shortcuts