block: rename __make_request() to blk_queue_bio()

Now that it's exported, lets put it in a more sane namespace.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

block/blk-core.c

@@ -540,7 +540,7 @@ blk_init_allocated_queue_node(struct request_queue *q, request_fn_proc *rfn,
 	/*
 	 * This also sets hw/phys segments, boundary and size
 	 */
-	blk_queue_make_request(q, __make_request);
+	blk_queue_make_request(q, blk_queue_bio);
 
 	q->sg_reserved_size = INT_MAX;
 
@@ -1211,7 +1211,7 @@ void init_request_from_bio(struct request *req, struct bio *bio)
 	blk_rq_bio_prep(req->q, req, bio);
 }
 
-int __make_request(struct request_queue *q, struct bio *bio)
+int blk_queue_bio(struct request_queue *q, struct bio *bio)
 {
 	const bool sync = !!(bio->bi_rw & REQ_SYNC);
 	struct blk_plug *plug;
@@ -1315,7 +1315,7 @@ int __make_request(struct request_queue *q, struct bio *bio)
 out:
 	return 0;
 }
-EXPORT_SYMBOL_GPL(__make_request);	/* for device mapper only */
+EXPORT_SYMBOL_GPL(blk_queue_bio);	/* for device mapper only */
 
 /*
  * If bio->bi_dev is a partition, remap the location

drivers/md/dm.c

@@ -1427,7 +1427,7 @@ static int dm_request(struct request_queue *q, struct bio *bio)
 	struct mapped_device *md = q->queuedata;
 
 	if (dm_request_based(md))
-		return __make_request(q, bio);
+		return blk_queue_bio(q, bio);
 
 	return _dm_request(q, bio);
 }

include/linux/blkdev.h

@@ -675,7 +675,7 @@ extern int scsi_cmd_ioctl(struct request_queue *, struct gendisk *, fmode_t,
 extern int sg_scsi_ioctl(struct request_queue *, struct gendisk *, fmode_t,
 			 struct scsi_ioctl_command __user *);
 
-extern int __make_request(struct request_queue *q, struct bio *bio);
+extern int blk_queue_bio(struct request_queue *q, struct bio *bio);
 
 /*
  * A queue has just exitted congestion.  Note this in the global counter of