+static struct dentry *isofs_fh_to_parent(struct super_block *sb,
+ struct fid *fid, int fh_len, int fh_type)
+{
+ struct isofs_fid *ifid = (struct isofs_fid *)fid;
+
+ if (fh_type != 2)
+ return NULL;
+
+ return isofs_export_iget(sb,
+ fh_len > 2 ? ifid->parent_block : 0,
+ ifid->parent_offset,
+ fh_len > 4 ? ifid->parent_generation : 0);
+}