NWRITEERR
np->n_flag |= NWRITEERR;
np->n_flag |= NWRITEERR;
if (np->n_flag & NWRITEERR) {
np->n_flag &= ~NWRITEERR;
np->n_flag &= ~(NWRITEERR | NACC | NUPD | NCHG | NLOCKED | NWANTED);
if (np->n_flag & NWRITEERR) {
np->n_flag &= ~NWRITEERR;
if (np->n_flag & NWRITEERR) {
np->n_flag &= ~NWRITEERR;
if (flag & NWRITEERR)