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Diffstat (limited to 'include/linux/blkdev.h')
-rw-r--r--include/linux/blkdev.h25
1 files changed, 18 insertions, 7 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index b126c6f68e2..95be0ac57e7 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>
@@ -32,8 +34,6 @@
)
#endif
-#ifdef CONFIG_BLOCK
-
struct scsi_ioctl_command;
struct request_queue;
@@ -471,7 +471,6 @@ 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 +636,23 @@ 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 +674,8 @@ 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 +822,6 @@ 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