RACCT_READIOPS
racct_add_force(curproc, RACCT_READIOPS, 1);
rctl_throttle_decay(p->p_racct, RACCT_READIOPS);
[RACCT_READIOPS] =
racct_add_locked(curproc, RACCT_READIOPS, 1, 1);
rctl_throttle_decay(racct, RACCT_READIOPS);
{ "readiops", RACCT_READIOPS },
racct_add_force(curproc, RACCT_READIOPS, 1);