OBJ_ONEMAPPING
vm_object_clear_flag(shm_handle->shm_object, OBJ_ONEMAPPING);
if (obj->flags & OBJ_ONEMAPPING)
(object->flags & (OBJ_NOSPLIT|OBJ_ONEMAPPING)) ==
OBJ_ONEMAPPING &&
OBJ_ONEMAPPING);
vm_object_clear_flag(source, OBJ_ONEMAPPING);
(object->flags & OBJ_ONEMAPPING) == 0) {
vm_object_set_flag(object, OBJ_ONEMAPPING);
if (m->object->ref_count <= 2 || (m->object->flags & OBJ_ONEMAPPING))