The same logic appears twice and should probably be pulled out into a
function.
Suggested-by: NMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: NRui Teng <rui.teng@linux.vnet.ibm.com>
[mpe: Rename to tm_flush_hash_page() and move comment into the function]
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>