diff -Naurp linux-orig/include/linux/page-flags.h linux-mod/include/linux/page-flags.h
--- linux-orig/include/linux/page-flags.h	2006-06-20 20:49:59.000000000 -0700
+++ linux-mod/include/linux/page-flags.h	2006-06-20 20:47:50.000000000 -0700
@@ -141,17 +141,27 @@ DECLARE_PER_CPU(struct vm_event_state, v
 
 static inline unsigned long get_cpu_vm_events(enum vm_event_item item)
 {
-	return __get_cpu_var(vm_event_states).event[item];
+	unsigned long flags, res;
+	local_irq_save(flags); 
+	res = __get_cpu_var(vm_event_states).event[item];
+	local_irq_restore(flags);
+	return res;
 }
 
 static inline void count_vm_event(enum vm_event_item item)
 {
+	unsigned long flags;
+	local_irq_save(flags);
 	__get_cpu_var(vm_event_states).event[item]++;
+	local_irq_restore(flags);
 }
 
 static inline void count_vm_events(enum vm_event_item item, long delta)
 {
+	unsigned long flags;
+	local_irq_save(flags);
 	__get_cpu_var(vm_event_states).event[item] += delta;
+	local_irq_restore(flags);
 }
 
 extern void all_vm_events(unsigned long *);