[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/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index da63c54..21c075d 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -654,7 +654,7 @@
 static struct scsi_cmnd *scsi_end_request(struct scsi_cmnd *cmd, int uptodate,
 					  int bytes, int requeue)
 {
-	request_queue_t *q = cmd->device->request_queue;
+	struct request_queue *q = cmd->device->request_queue;
 	struct request *req = cmd->request;
 	unsigned long flags;
 
@@ -818,7 +818,7 @@
 {
 	int result = cmd->result;
 	int this_count = cmd->request_bufflen;
-	request_queue_t *q = cmd->device->request_queue;
+	struct request_queue *q = cmd->device->request_queue;
 	struct request *req = cmd->request;
 	int clear_errors = 1;
 	struct scsi_sense_hdr sshdr;
@@ -1038,7 +1038,7 @@
 	return BLKPREP_KILL;
 }
 
-static int scsi_issue_flush_fn(request_queue_t *q, struct gendisk *disk,
+static int scsi_issue_flush_fn(struct request_queue *q, struct gendisk *disk,
 			       sector_t *error_sector)
 {
 	struct scsi_device *sdev = q->queuedata;
@@ -1340,7 +1340,7 @@
 /*
  * Kill a request for a dead device
  */
-static void scsi_kill_request(struct request *req, request_queue_t *q)
+static void scsi_kill_request(struct request *req, struct request_queue *q)
 {
 	struct scsi_cmnd *cmd = req->special;
 	struct scsi_device *sdev = cmd->device;
@@ -2119,7 +2119,7 @@
 int
 scsi_internal_device_block(struct scsi_device *sdev)
 {
-	request_queue_t *q = sdev->request_queue;
+	struct request_queue *q = sdev->request_queue;
 	unsigned long flags;
 	int err = 0;
 
@@ -2159,7 +2159,7 @@
 int
 scsi_internal_device_unblock(struct scsi_device *sdev)
 {
-	request_queue_t *q = sdev->request_queue; 
+	struct request_queue *q = sdev->request_queue; 
 	int err;
 	unsigned long flags;
 	
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 424d557..e21c714 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -814,7 +814,7 @@
 	return ret;
 }
 
-static void sd_prepare_flush(request_queue_t *q, struct request *rq)
+static void sd_prepare_flush(struct request_queue *q, struct request *rq)
 {
 	memset(rq->cmd, 0, sizeof(rq->cmd));
 	rq->cmd_type = REQ_TYPE_BLOCK_PC;
@@ -1285,7 +1285,7 @@
 		 */
 		int hard_sector = sector_size;
 		sector_t sz = (sdkp->capacity/2) * (hard_sector/256);
-		request_queue_t *queue = sdp->request_queue;
+		struct request_queue *queue = sdp->request_queue;
 		sector_t mb = sz;
 
 		blk_queue_hardsect_size(queue, hard_sector);
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index e7b6a7f..902eb11 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -624,7 +624,7 @@
 	unsigned char *buffer;
 	int the_result, retries = 3;
 	int sector_size;
-	request_queue_t *queue;
+	struct request_queue *queue;
 
 	buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
 	if (!buffer)