1 files changed, 18 insertions, 21 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index b126c6f68e27..5ed888b04b29 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1,6 +1,8 @@
 #ifndef _LINUX_BLKDEV_H
 #define _LINUX_BLKDEV_H
 
+#ifdef CONFIG_BLOCK
+
 #include <linux/sched.h>
 #include <linux/major.h>
 #include <linux/genhd.h>
@@ -18,22 +20,6 @@
 
 #include <asm/scatterlist.h>
 
-#ifdef CONFIG_LBD
-# include <asm/div64.h>
-# define sector_div(a, b) do_div(a, b)
-#else
-# define sector_div(n, b)( \
-{ \
-        int _res; \
-        _res = (n) % (b); \
-        (n) /= (b); \
-        _res; \
-} \
-)
-#endif
-
-#ifdef CONFIG_BLOCK
-
 struct scsi_ioctl_command;
 
 struct request_queue;
@@ -471,7 +457,6 @@ struct request_queue
         int                     orderr, ordcolor;
         struct request          pre_flush_rq, bar_rq, post_flush_rq;
         struct request          *orig_bar_rq;
-        unsigned int            bi_size;
 
         struct mutex            sysfs_lock;
 
@@ -637,10 +622,23 @@ static inline void blk_queue_bounce(struct request_queue *q, struct bio **bio)
 }
 #endif /* CONFIG_MMU */
 
-#define rq_for_each_bio(_bio, rq)       \
+struct req_iterator {
+        int i;
+        struct bio *bio;
+};
+
+/* This should not be used directly - use rq_for_each_segment */
+#define __rq_for_each_bio(_bio, rq)     \
         if ((rq->bio))                  \
                 for (_bio = (rq)->bio; _bio; _bio = _bio->bi_next)
 
+#define rq_for_each_segment(bvl, _rq, _iter)                    \
+        __rq_for_each_bio(_iter.bio, _rq)                       \
+                bio_for_each_segment(bvl, _iter.bio, _iter.i)
+
+#define rq_iter_last(rq, _iter)                                 \
+                (_iter.bio->bi_next == NULL && _iter.i == _iter.bio->bi_vcnt-1)
+
 extern int blk_register_queue(struct gendisk *disk);
 extern void blk_unregister_queue(struct gendisk *disk);
 extern void register_disk(struct gendisk *dev);
@@ -662,8 +660,8 @@ extern int sg_scsi_ioctl(struct file *, struct request_queue *,
 /*
  * Temporary export, until SCSI gets fixed up.
  */
-extern int ll_back_merge_fn(struct request_queue *, struct request *,
-                struct bio *);
+extern int blk_rq_append_bio(struct request_queue *q, struct request *rq,
+                             struct bio *bio);
 
 /*
  * A queue has just exitted congestion.  Note this in the global counter of
@@ -810,7 +808,6 @@ static inline struct request *blk_map_queue_find_tag(struct blk_queue_tag *bqt,
         return bqt->tag_index[tag];
 }
 
-extern void blk_rq_bio_prep(struct request_queue *, struct request *, struct bio *);
 extern int blkdev_issue_flush(struct block_device *, sector_t *);
 
 #define MAX_PHYS_SEGMENTS 128