1 files changed, 10 insertions, 2 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 00e388d0e221..358ac423ed2f 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -642,6 +642,12 @@ static inline void blk_queue_bounce(struct request_queue *q, struct bio **bio)
 }
 #endif /* CONFIG_MMU */
 
+struct rq_map_data {
+        struct page **pages;
+        int page_order;
+        int nr_entries;
+};
+
 struct req_iterator {
         int i;
         struct bio *bio;
@@ -711,11 +717,13 @@ extern void __blk_run_queue(struct request_queue *);
 extern void blk_run_queue(struct request_queue *);
 extern void blk_start_queueing(struct request_queue *);
 extern int blk_rq_map_user(struct request_queue *, struct request *,
-                           void __user *, unsigned long, gfp_t);
+                           struct rq_map_data *, void __user *, unsigned long,
+                           gfp_t);
 extern int blk_rq_unmap_user(struct bio *);
 extern int blk_rq_map_kern(struct request_queue *, struct request *, void *, unsigned int, gfp_t);
 extern int blk_rq_map_user_iov(struct request_queue *, struct request *,
-                               struct sg_iovec *, int, unsigned int, gfp_t);
+                               struct rq_map_data *, struct sg_iovec *, int,
+                               unsigned int, gfp_t);
 extern int blk_execute_rq(struct request_queue *, struct gendisk *,
                           struct request *, int);
 extern void blk_execute_rq_nowait(struct request_queue *, struct gendisk *,