Function filt_eventfddetach

freebsd/kern/sys_eventfd.c:280–288

}

static void
filt_eventfddetach(struct knote *kn)
{
	struct eventfd *efd = kn->kn_hook;

	mtx_lock(&efd->efd_lock);
	knlist_remove(&efd->efd_sel.si_note, kn, 1);
	mtx_unlock(&efd->efd_lock);
}

static int
filt_eventfdread(struct knote *kn, long hint)