Function vm_phys_avail_count

freebsd/vm/vm_phys.c:1496–1507

* Return the index of the first unused slot which may be the terminating * entry. */

 * entry.
 */
static int
vm_phys_avail_count(void)
{
	int i;

	for (i = 0; phys_avail[i + 1]; i += 2)
		continue;
	if (i > PHYS_AVAIL_ENTRIES)
		panic("Improperly terminated phys_avail %d entries", i);

	return (i);
}

/*
 * Assert that a phys_avail entry is valid.