udf_fiiter_add_entry
err = udf_fiiter_add_entry(dir, dentry, &iter);
err = udf_fiiter_add_entry(inode, NULL, &iter);
err = udf_fiiter_add_entry(dir, dentry, &iter);
err = udf_fiiter_add_entry(dir, dentry, &iter);
retval = udf_fiiter_add_entry(new_dir, new_dentry, &niter);