diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 78f43d1..3002e5d 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -957,6 +957,8 @@
 	struct btrfs_block_rsv trans_block_rsv;
 	/* block reservation for chunk tree */
 	struct btrfs_block_rsv chunk_block_rsv;
+	/* block reservation for delayed operations */
+	struct btrfs_block_rsv delayed_block_rsv;
 
 	struct btrfs_block_rsv empty_block_rsv;