C C-2+2W+o-wmb-o+o-wmb-o.litmus

{
}

P0(int *a, int *b)
{
	WRITE_ONCE(*a, 2);
	smp_wmb();
	WRITE_ONCE(*b, 1);
}

P1(int *a, int *b)
{
	WRITE_ONCE(*b, 2);
	smp_wmb();
	WRITE_ONCE(*a, 1);
}

exists
(b=2 /\ a=2)