1 files changed, 2 insertions, 0 deletions
diff --git a/block_int.h b/block_int.h
index 8e72abee0c..7ebe926f5b 100644
--- a/block_int.h
+++ b/block_int.h
@@ -168,6 +168,8 @@ struct BlockDriverState {
     int cyls, heads, secs, translation;
     int type;
     char device_name[32];
+    int dirty_tracking;
+    uint8_t *dirty_bitmap;
     BlockDriverState *next;
     void *private;
 };