On Wed 24-03-21 13:03:29, Michal Hocko wrote:
> On Wed 24-03-21 11:12:59, Oscar Salvador wrote:
[...]

an additional remark

> > - online_pages()->move_pfn_range_to_zone(): Accounts for node/zone's 
> > spanned pages
> > - online_pages()->zone->present_pages += nr_pages;

I am pretty sure you shouldn't account vmmemmap pages to the target zone
in some cases - e.g. vmemmap cannot be part of the movable zone, can it?
So this would be yet another special casing. This patch has got it wrong
unless I have missed some special casing.
-- 
Michal Hocko
SUSE Labs

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