s390 build failures in v4.9.y.queue, v4.14.y.queue

Hi,

I see the following build failure in v4.9.y and v4.14.y stable queues.

arch/s390/mm/gmap.c: In function '__gmap_zap': arch/s390/mm/gmap.c:665:9: error: implicit declaration of function 'vma_lookup'

In v4.14.y, there is an additional failure:

arch/s390/mm/pgtable.c: In function 'pgste_perform_essa': arch/s390/mm/pgtable.c:910:8: error: implicit declaration of function 'vma_lookup'

Guenter