diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 9b02596..62499dd 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -518,6 +518,7 @@
 
 	u64 generation;
 	u64 last_trans_committed;
+	u64 open_ioctl_trans;
 	unsigned long mount_opt;
 	u64 max_extent;
 	u64 max_inline;