diff --git a/drivers/md/raid10.h b/drivers/md/raid10.h
index 37509d7..135b1b0 100644
--- a/drivers/md/raid10.h
+++ b/drivers/md/raid10.h
@@ -14,6 +14,7 @@
 struct r10conf {
 	struct mddev		*mddev;
 	struct mirror_info	*mirrors;
+	struct mirror_info	*mirrors_new, *mirrors_old;
 	spinlock_t		device_lock;
 
 	/* geometry */
@@ -42,6 +43,9 @@
 	sector_t		dev_sectors;  /* temp copy of
 					       * mddev->dev_sectors */
 	sector_t		reshape_progress;
+	sector_t		reshape_safe;
+	unsigned long		reshape_checkpoint;
+	sector_t		offset_diff;
 
 	struct list_head	retry_list;
 	/* queue pending writes and submit them on unplug */
@@ -138,6 +142,7 @@
 	R10BIO_Uptodate,
 	R10BIO_IsSync,
 	R10BIO_IsRecover,
+	R10BIO_IsReshape,
 	R10BIO_Degraded,
 /* Set ReadError on bios that experience a read error
  * so that raid10d knows what to do with them.