1 files changed, 2 insertions, 0 deletions
diff --git a/block_int.h b/block_int.h
index e60aed4a04..a94b80152f 100644
--- a/block_int.h
+++ b/block_int.h
@@ -148,6 +148,8 @@ struct BlockDriverState {
     BlockDriver *drv; /* NULL means no media */
     void *opaque;
 
+    DeviceState *peer;
+
     char filename[1024];
     char backing_file[1024]; /* if non zero, the image is a diff of
                                 this file image */