Messages in this thread | | | Subject | Re: [PATCH v5 21/21] mm/hugetlb: Disable freeing vmemmap if struct page size is not power of two | From | David Hildenbrand <> | Date | Fri, 20 Nov 2020 10:15:30 +0100 |
| |
On 20.11.20 09:25, Michal Hocko wrote: > On Fri 20-11-20 14:43:25, Muchun Song wrote: >> We only can free the unused vmemmap to the buddy system when the >> size of struct page is a power of two. > > Can we actually have !power_of_2 struct pages?
AFAIK multiples of 8 bytes (56, 64, 72) are possible.
-- Thanks,
David / dhildenb
| |