1 files changed, 1 insertions, 0 deletions
diff --git a/block_int.h b/block_int.h
index a0ebd90a0b..223a437b6a 100644
--- a/block_int.h
+++ b/block_int.h
@@ -175,6 +175,7 @@ struct BlockDriverState {
     int type;
     char device_name[32];
     unsigned long *dirty_bitmap;
+    int64_t dirty_count;
     BlockDriverState *next;
     void *private;
 };