diff --git a/drivers/md/md.h b/drivers/md/md.h
index 5ee5371..d05bab5 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -331,6 +331,8 @@
 	struct attribute_group		*to_remove;
 	struct plug_handle		*plug; /* if used by personality */
 
+	struct bio_set			*bio_set;
+
 	/* Generic flush handling.
 	 * The last to finish preflush schedules a worker to submit
 	 * the rest of the request (without the REQ_FLUSH flag).
@@ -517,4 +519,8 @@
 
 extern void mddev_suspend(mddev_t *mddev);
 extern void mddev_resume(mddev_t *mddev);
+extern struct bio *bio_clone_mddev(struct bio *bio, gfp_t gfp_mask,
+				   mddev_t *mddev);
+extern struct bio *bio_alloc_mddev(gfp_t gfp_mask, int nr_iovecs,
+				   mddev_t *mddev);
 #endif /* _MD_MD_H */