1 files changed, 12 insertions, 0 deletions

diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h
index f9428aaaa77a..e410335841aa 100644
--- a/fs/btrfs/backref.h
+++ b/fs/btrfs/backref.h
@@ -72,4 +72,16 @@ int btrfs_check_shared(struct btrfs_root *root, u64 inum, u64 bytenr);
 
 int __init btrfs_prelim_ref_init(void);
 void btrfs_prelim_ref_exit(void);
+
+struct prelim_ref {
+        struct rb_node rbnode;
+        u64 root_id;
+        struct btrfs_key key_for_search;
+        int level;
+        int count;
+        struct extent_inode_elem *inode_list;
+        u64 parent;
+        u64 wanted_disk_byte;
+};
+
 #endif