--- src/sys/vm/vm_fault.c	2007/08/28 01:09:07	1.44
+++ src/sys/vm/vm_fault.c	2008/04/16 18:05:09	1.44.2.1
@@ -1348,6 +1348,7 @@ readrest:
 				 * Oh, well, lets copy it.
 				 */
 				vm_page_copy(fs->m, fs->first_m);
+				vm_page_event(fs->m, VMEVENT_COW);
 			}
 
 			if (fs->m) {
@@ -1650,6 +1651,7 @@ vm_fault_copy_entry(vm_map_t dst_map, vm
 			panic("vm_fault_copy_wired: page missing");
 
 		vm_page_copy(src_m, dst_m);
+		vm_page_event(src_m, VMEVENT_COW);
 
 		/*
 		 * Enter it in the pmap...