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mm/hugetlb: set PTE as huge in hugetlb_change_protection and remove_migration_pte

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When setting a huge PTE, besides calling pte_mkhuge(), we also need to
call arch_make_huge_pte(), which we indeed do in make_huge_pte(), but we
forget to do in hugetlb_change_protection() and remove_migration_pte().

Signed-off-by: Zhigang Lu <[email protected]>
Signed-off-by: Chris Metcalf <[email protected]>
Reviewed-by: Michal Hocko <[email protected]>
Acked-by: Hillf Danton <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Tony Lu 2013-02-04 14:28:46 -08:00 • committed by Linus Torvalds
commit be7517d6ab
2 changed files with 4 additions and 1 deletions
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4
mm/migrate.c
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@ -160,8 +160,10 @@ static int remove_migration_pte(struct page *new, struct vm_area_struct *vma,
if (is_write_migration_entry(entry))
pte = pte_mkwrite(pte);
#ifdef CONFIG_HUGETLB_PAGE
if (PageHuge(new))
if (PageHuge(new)) {
pte = pte_mkhuge(pte);
pte = arch_make_huge_pte(pte, vma, new, 0);
}
#endif
flush_cache_page(vma, addr, pte_pfn(pte));
set_pte_at(mm, addr, ptep, pte);