Don't write-back the cachelines if we really just want to invalidate them.
Don't write-back the cachelines if we really just want to invalidate them.

Spotted out by:	Ian Lepore <freebsd at damnhippie DOT dyndns dot org>

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase