[PATCH] Add scatter-gather support for the block layer SG_IO
Signed-off-by: Jens Axboe <axboe@suse.de>
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 1dd2bc2..ebcd03b 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -281,6 +281,10 @@
extern int bio_get_nr_vecs(struct block_device *);
extern struct bio *bio_map_user(struct request_queue *, struct block_device *,
unsigned long, unsigned int, int);
+struct sg_iovec;
+extern struct bio *bio_map_user_iov(struct request_queue *,
+ struct block_device *,
+ struct sg_iovec *, int, int);
extern void bio_unmap_user(struct bio *);
extern struct bio *bio_map_kern(struct request_queue *, void *, unsigned int,
unsigned int);