RACCT_NSHM
[RACCT_NSHM] =
{ "nshm", RACCT_NSHM },
racct_sub_cred(shmseg->cred, RACCT_NSHM, 1);
if (racct_add(td->td_proc, RACCT_NSHM, 1)) {
racct_sub(td->td_proc, RACCT_NSHM, 1);
racct_sub(td->td_proc, RACCT_NSHM, 1);