On Mon, 2022-05-16 at 18:11 +0200, Claudio Imbrenda wrote: [...] > > [...] > > > diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c > > > index e8904cb9dc38..a3a1f90f6ec1 100644 > > > --- a/arch/s390/mm/gmap.c > > > +++ b/arch/s390/mm/gmap.c > > > @@ -2676,44 +2676,81 @@ void s390_reset_cmma(struct mm_struct > > > *mm) > > > } > > > EXPORT_SYMBOL_GPL(s390_reset_cmma); > > > > > > -/* > > > - * make inaccessible pages accessible again > > > - */ > > > -static int __s390_reset_acc(pte_t *ptep, unsigned long addr, > > > - unsigned long next, struct mm_walk > > > *walk) > > > +#define DESTROY_LOOP_THRESHOLD 32 > > > > maybe GATHER_NUM_PAGE_REFS_TO_TAKE? > > what about GATHER_GET_PAGES ? Yes, that's good as well.