rctl_rule_acquire
rctl_rule_acquire(link->rrl_rule);
rctl_rule_acquire(link->rrl_rule);
rctl_rule_acquire(link->rrl_rule);
rctl_rule_acquire(link->rrl_rule);
rctl_rule_acquire(rule);
rctl_rule_acquire(rule);
void rctl_rule_acquire(struct rctl_rule *rule);