Re: [PATCH v4 3/6] mm/notifier: add migration invalidation type

[Ralph Campbell]

On 7/28/20 12:15 PM, Jason Gunthorpe wrote:
> On Thu, Jul 23, 2020 at 03:30:01PM -0700, Ralph Campbell wrote:
> >   static inline int mm_has_notifiers(struct mm_struct *mm)
> > @@ -513,6 +519,7 @@ static inline void mmu_notifier_range_init(struct mmu_notifier_range *range,
> >   	range->start = start;
> >   	range->end = end;
> >   	range->flags = flags;
> > +	range->migrate_pgmap_owner = NULL;
> >   }
>
> Since this function is commonly called and nobody should read
> migrate_pgmap_owner unless MMU_NOTIFY_MIGRATE is set as the event,
> this assignment can be dropped.
>
> Jason

I agree.
Acked-by: Ralph Campbell <rcampbell@xxxxxxxxxx>