[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>

85 files changed, 529 insertions, 510 deletions

diff --git a/Documentation/block/barrier.txt b/Documentation/block/barrier.txt
index 7d279f2f5bb2..2c2f24f634e4 100644
--- a/Documentation/block/barrier.txt
+++ b/Documentation/block/barrier.txt
@@ -79,9 +79,9 @@ and how to prepare flush requests.  Note that the term 'ordered' is
 used to indicate the whole sequence of performing barrier requests
 including draining and flushing.
 
-typedef void (prepare_flush_fn)(request_queue_t *q, struct request *rq);
+typedef void (prepare_flush_fn)(struct request_queue *q, struct request *rq);
 
-int blk_queue_ordered(request_queue_t *q, unsigned ordered,
+int blk_queue_ordered(struct request_queue *q, unsigned ordered,
                       prepare_flush_fn *prepare_flush_fn);
 
 @q                      : the queue in question
@@ -92,7 +92,7 @@ int blk_queue_ordered(request_queue_t *q, unsigned ordered,
 For example, SCSI disk driver's prepare_flush_fn looks like the
 following.
 
-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;
diff --git a/Documentation/block/biodoc.txt b/Documentation/block/biodoc.txt
index 3adaace328a6..8af392fc6ef0 100644
--- a/Documentation/block/biodoc.txt
+++ b/Documentation/block/biodoc.txt
@@ -740,12 +740,12 @@ Block now offers some simple generic functionality to help support command
 queueing (typically known as tagged command queueing), ie manage more than
 one outstanding command on a queue at any given time.
 
-        blk_queue_init_tags(request_queue_t *q, int depth)
+        blk_queue_init_tags(struct request_queue *q, int depth)
 
         Initialize internal command tagging structures for a maximum
         depth of 'depth'.
 
-        blk_queue_free_tags((request_queue_t *q)
+        blk_queue_free_tags((struct request_queue *q)
 
         Teardown tag info associated with the queue. This will be done
         automatically by block if blk_queue_cleanup() is called on a queue
@@ -754,7 +754,7 @@ one outstanding command on a queue at any given time.
 The above are initialization and exit management, the main helpers during
 normal operations are:
 
-        blk_queue_start_tag(request_queue_t *q, struct request *rq)
+        blk_queue_start_tag(struct request_queue *q, struct request *rq)
 
         Start tagged operation for this request. A free tag number between