__rcu_assign_sk_user_data_with_flags
__rcu_assign_sk_user_data_with_flags(sk, ptr, 0)
__rcu_assign_sk_user_data_with_flags(sk, psock,
__rcu_assign_sk_user_data_with_flags(smc->clcsock->sk, smc,
__rcu_assign_sk_user_data_with_flags(clcsk, smc, SK_USER_DATA_NOCOPY);