After loading, cache fencing is conducted to prevent {HEAD ~ the cache} from flushing the contents or replacing {TAIL ~ the contents} of any cache line 
from replacing
After loading , cache fencing is conducted to prevent { HEAD ~ the cache } from flushing the contents or replacing { TAIL ~ the contents } of any cache line
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH