On Mon, Aug 19, 2019 at 11:55:51AM +0000, Kirill A. Shutemov wrote: > > @@ -2533,6 +2534,8 @@ static void __split_huge_page(struct page *page, struct list_head *list, > > > > remap_page(head); > > > > + split_page_owner(head, HPAGE_PMD_ORDER); > > + > > I think it has to be before remap_page(). This way nobody would be able to > mess with the page until it has valid page_owner. Or rather next to ClearPageCompound(). -- Kirill A. Shutemov
