diff --git a/include/linux/bio.h b/include/linux/bio.h
index 4c59bdc..d259690 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -327,6 +327,8 @@
 extern void bio_set_pages_dirty(struct bio *bio);
 extern void bio_check_pages_dirty(struct bio *bio);
 extern struct bio *bio_copy_user(struct request_queue *, unsigned long, unsigned int, int);
+extern struct bio *bio_copy_user_iov(struct request_queue *, struct sg_iovec *,
+				     int, int);
 extern int bio_uncopy_user(struct bio *);
 void zero_fill_bio(struct bio *bio);