Function vm_radix_is_singleton

freebsd/vm/vm_radix.c:462–471

* Returns TRUE if the specified radix tree contains a single leaf and FALSE * otherwise. */

 * otherwise.
 */
boolean_t
vm_radix_is_singleton(struct vm_radix *rtree)
{
	struct vm_radix_node *rnode;

	rnode = vm_radix_root_load(rtree, LOCKED);
	if (rnode == NULL)
		return (FALSE);
	return (vm_radix_isleaf(rnode));
}

/*
 * Returns the value stored at the index.  If the index is not present,