[BLOCK] Get rid of request_queue_t typedef

Some of the code has been gradually transitioned to using the proper
struct request_queue, but there's lots left. So do a full sweet of
the kernel and get rid of this typedef and replace its uses with
the proper type.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 00c78b7..650991b 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -552,7 +552,7 @@
 	for (i=0; i<mddev->raid_disks; i++) {
 		mdk_rdev_t *rdev = rcu_dereference(conf->mirrors[i].rdev);
 		if (rdev && !test_bit(Faulty, &rdev->flags) && atomic_read(&rdev->nr_pending)) {
-			request_queue_t *r_queue = bdev_get_queue(rdev->bdev);
+			struct request_queue *r_queue = bdev_get_queue(rdev->bdev);
 
 			atomic_inc(&rdev->nr_pending);
 			rcu_read_unlock();
@@ -567,7 +567,7 @@
 	rcu_read_unlock();
 }
 
-static void raid1_unplug(request_queue_t *q)
+static void raid1_unplug(struct request_queue *q)
 {
 	mddev_t *mddev = q->queuedata;
 
@@ -575,7 +575,7 @@
 	md_wakeup_thread(mddev->thread);
 }
 
-static int raid1_issue_flush(request_queue_t *q, struct gendisk *disk,
+static int raid1_issue_flush(struct request_queue *q, struct gendisk *disk,
 			     sector_t *error_sector)
 {
 	mddev_t *mddev = q->queuedata;
@@ -587,7 +587,7 @@
 		mdk_rdev_t *rdev = rcu_dereference(conf->mirrors[i].rdev);
 		if (rdev && !test_bit(Faulty, &rdev->flags)) {
 			struct block_device *bdev = rdev->bdev;
-			request_queue_t *r_queue = bdev_get_queue(bdev);
+			struct request_queue *r_queue = bdev_get_queue(bdev);
 
 			if (!r_queue->issue_flush_fn)
 				ret = -EOPNOTSUPP;
@@ -615,7 +615,7 @@
 	for (i = 0; i < mddev->raid_disks; i++) {
 		mdk_rdev_t *rdev = rcu_dereference(conf->mirrors[i].rdev);
 		if (rdev && !test_bit(Faulty, &rdev->flags)) {
-			request_queue_t *q = bdev_get_queue(rdev->bdev);
+			struct request_queue *q = bdev_get_queue(rdev->bdev);
 
 			/* Note the '|| 1' - when read_balance prefers
 			 * non-congested targets, it can be removed
@@ -765,7 +765,7 @@
 	return NULL;
 }
 
-static int make_request(request_queue_t *q, struct bio * bio)
+static int make_request(struct request_queue *q, struct bio * bio)
 {
 	mddev_t *mddev = q->queuedata;
 	conf_t *conf = mddev_to_conf(mddev);