It can be referenced from the passed transaction handle.
Signed-off-by: Lu Fengqi <lufq.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq);
 
 /* root-item.c */
-int btrfs_add_root_ref(struct btrfs_trans_handle *trans,
-                      struct btrfs_fs_info *fs_info,
-                      u64 root_id, u64 ref_id, u64 dirid, u64 sequence,
-                      const char *name, int name_len);
+int btrfs_add_root_ref(struct btrfs_trans_handle *trans, u64 root_id,
+                      u64 ref_id, u64 dirid, u64 sequence, const char *name,
+                      int name_len);
 int btrfs_del_root_ref(struct btrfs_trans_handle *trans, u64 root_id,
                       u64 ref_id, u64 dirid, u64 *sequence, const char *name,
                       int name_len);
 
                   struct btrfs_inode *parent_inode, struct btrfs_inode *inode,
                   const char *name, int name_len, int add_backref, u64 index)
 {
-       struct btrfs_fs_info *fs_info = trans->fs_info;
        int ret = 0;
        struct btrfs_key key;
        struct btrfs_root *root = parent_inode->root;
        }
 
        if (unlikely(ino == BTRFS_FIRST_FREE_OBJECTID)) {
-               ret = btrfs_add_root_ref(trans, fs_info, key.objectid,
+               ret = btrfs_add_root_ref(trans, key.objectid,
                                         root->root_key.objectid, parent_ino,
                                         index, name, name_len);
        } else if (add_backref) {
 
        ret = btrfs_update_inode(trans, root, dir);
        BUG_ON(ret);
 
-       ret = btrfs_add_root_ref(trans, fs_info,
-                                objectid, root->root_key.objectid,
+       ret = btrfs_add_root_ref(trans, objectid, root->root_key.objectid,
                                 btrfs_ino(BTRFS_I(dir)), index, name, namelen);
        BUG_ON(ret);
 
 
  *
  * Will return 0, -ENOMEM, or anything from the CoW path
  */
-int btrfs_add_root_ref(struct btrfs_trans_handle *trans,
-                      struct btrfs_fs_info *fs_info,
-                      u64 root_id, u64 ref_id, u64 dirid, u64 sequence,
-                      const char *name, int name_len)
+int btrfs_add_root_ref(struct btrfs_trans_handle *trans, u64 root_id,
+                      u64 ref_id, u64 dirid, u64 sequence, const char *name,
+                      int name_len)
 {
-       struct btrfs_root *tree_root = fs_info->tree_root;
+       struct btrfs_root *tree_root = trans->fs_info->tree_root;
        struct btrfs_key key;
        int ret;
        struct btrfs_path *path;
 
        /*
         * insert root back/forward references
         */
-       ret = btrfs_add_root_ref(trans, fs_info, objectid,
+       ret = btrfs_add_root_ref(trans, objectid,
                                 parent_root->root_key.objectid,
                                 btrfs_ino(BTRFS_I(parent_inode)), index,
                                 dentry->d_name.name, dentry->d_name.len);