create_new_namespaces
new_ns = create_new_namespaces(flags, tsk, user_ns, tsk->fs);
*new_nsp = create_new_namespaces(unshare_flags, current, user_ns,
new = create_new_namespaces(0, tsk, current_user_ns(), tsk->fs);
nsset->nsproxy = create_new_namespaces(0, me, current_user_ns(), me->fs);