this_cpu: Remove pageset_notifier

Remove the pageset notifier since it only marks that a processor
exists on a specific node. Move that code into the vmstat notifier.

Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

mm/vmstat.c

@@ -908,6 +908,7 @@ static int __cpuinit vmstat_cpuup_callback(struct notifier_block *nfb,
 	case CPU_ONLINE:
 	case CPU_ONLINE_FROZEN:
 		start_cpu_timer(cpu);
+		node_set_state(cpu_to_node(cpu), N_CPU);
 		break;
 	case CPU_DOWN_PREPARE:
 	case CPU_DOWN_PREPARE_FROZEN: