Re: [PATCH 03/21] mm/hugetlb: correct demote page offset logic

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On 09/13/22 18:07, Doug Berger wrote:
> On 9/13/2022 4:34 PM, Matthew Wilcox wrote:
> > On Tue, Sep 13, 2022 at 12:54:50PM -0700, Doug Berger wrote:
> > > With gigantic pages it may not be true that struct page structures
> > > are contiguous across the entire gigantic page. The mem_map_offset
> > > function is used here in place of direct pointer arithmetic to
> > > correct for this.
> > 
> > We're just eliminating mem_map_offset().  Please use nth_page()
> > instead.That's good to know. I will include that in v2.

Thanks Doug and Matthew.  I will take a closer look at this series soon.

It seems like this patch is a fix independent of the series.  If so, I
would suggest sending separate to make it easy for backports to stable.
-- 
Mike Kravetz



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