Hi, While working on some NUMA code recently, I stumbled over how nodemask operations are unconditionally using MAX_NUMNODES length, which is typically 1024 for distro configs. OTOH typical machines only have <=4 nodes, so doing these crazy long bitmap ops is silly. Therefore do as cpumask does and use nr_node_ids analogous to nr_cpu_ids. These patches are lightly tested -- as in they seem to boot on a 2 node system.
