NET_IOV
return (__force unsigned long)netmem & NET_IOV;
~NET_IOV);
return (__force netmem_ref)((unsigned long)niov | NET_IOV);
void *p = (void *)((__force unsigned long)netmem & ~NET_IOV);
__entry->netmem & NET_IOV, __entry->pfn, __entry->release)
__entry->netmem & NET_IOV, __entry->pfn, __entry->hold)