NFSLCK_DENYBITS
if (!mustdelete && (op->nfso_mode & NFSLCK_DENYBITS) == 0) {
new_open->ls_flags = (new_stp->ls_flags&NFSLCK_DENYBITS)|
new_open->ls_flags = (new_stp->ls_flags & NFSLCK_DENYBITS) |