uao_reference
uao_reference(obj->base.uao);
uao_reference(obj->base.uao);
uao_reference(uao); /* Take a reference for vmm. */
uao_reference(uao); /* Add a reference for the process. */
uao_reference(sigobject);
uao_reference(timekeep_object);
uao_reference(timekeep_object);
uao_reference(shm_handle->shm_object);
uao_reference(node->tn_uobj);
uao_reference(node->tn_uobj);
uao_reference(&aobj->u_obj);
uao_reference(&nextaobj->u_obj);
.pgo_reference = uao_reference,
void uao_reference(struct uvm_object *);