We might have migrated to a machine that uses a different flush type,
or doesn't need flushing at all.
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: NMauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>