kqueue_expand
static int kqueue_expand(struct kqueue *kq, const struct filterops *fops,
if ((kev->flags & EV_ADD) == EV_ADD && kqueue_expand(kq, fops,
error = kqueue_expand(kq, fops, kev->ident, mflag);
error = kqueue_expand(kq, fops, kev->ident, mflag);
error = kqueue_expand(kq1, fop, kn->kn_kevent.ident, M_WAITOK);