void file_sb_list_del(struct file *file)
{
	if (!list_empty(&file->f_u.fu_list)) {
		lg_local_lock_cpu(&files_lglock, file_list_cpu(file));
		list_del_init(&file->f_u.fu_list);
		lg_local_unlock_cpu(&files_lglock, file_list_cpu(file));
	}
}
This entry has been deprecated.  It was originally used for organizing the Development View (CWE-699) and some other views, but it introduced unnecessary complexity and depth to the resulting tree.