[PATCH] missing tag blkdev.h stuff

For some odd reason, the blkdev.h changes did not get patched into your
tree from the patch I sent?! Anyways, here's that change:

include/linux/blkdev.h

@@ -323,11 +323,11 @@ extern void generic_unplug_device(void *);
 /*
  * tag stuff
  */
-#define blk_queue_tag_request(q, tag)	((q)->queue_tags->tag_index[(tag)])
 #define blk_queue_tag_depth(q)		((q)->queue_tags->busy)
 #define blk_queue_tag_queue(q)		((q)->queue_tags->busy < (q)->queue_tags->max_depth)
 #define blk_rq_tagged(rq)		((rq)->flags & REQ_QUEUED)
 extern int blk_queue_start_tag(request_queue_t *, struct request *);
+extern struct request *blk_queue_find_tag(request_queue_t *, int);
 extern void blk_queue_end_tag(request_queue_t *, struct request *);
 extern int blk_queue_init_tags(request_queue_t *, int);
 extern void blk_queue_free_tags(request_queue_t *);