ad1fbba2a9
1. Don't bother checking object->ref_count == 1 in order to set OBJ_ONEMAPPING. It's a waste of time. If object->ref_count == 1, vm_map_entry_delete will "run-down" the object and its pages. 2. If object->ref_count == 1, ignore OBJ_ONEMAPPING. Wait for vm_map_entry_delete to "run-down" the object and its pages. Otherwise, we're calling two different procedures to delete the object's pages. Note: "vmstat -s" will once again show a non-zero value for "pages freed by exiting processes".