extend vlist code to allow keeping the old data structure instead of the new one on updates

1 files changed, 1 insertions, 0 deletions

diff --git a/utils.h b/utils.h
index c8101e7..ab73930 100644
--- a/utils.h
+++ b/utils.h
@@ -28,6 +28,7 @@ struct vlist_tree {
 
 	vlist_update_cb update;
 	int node_offset;
+	bool keep_old;
 
 	int version;
 };