Re: [RFC] Hugetlb demotion for x86

[Dave Hansen <haveblue@us.ibm.com>]

On Wed, 2006-05-10 at 13:56 -0500, Adam Litke wrote:
> +install_demotion_ptes(struct mm_struct *mm, struct page *page,
> +                       pgprot_t prot, unsigned long address)
> +{
> +       pgd_t *pgd;
> +       pud_t *pud;
> +       pmd_t *pmd;
> +       pte_t entry, *ptep;
> +       int pfn, i;
> +
> +       pgd = pgd_offset(mm, address);
> +       pud = pud_alloc(mm, pgd, address);
> +       if (!pud)
> +               return -ENOMEM;
> +       pmd = pmd_alloc(mm, pud, address);
> +       if (!pmd)
> +               return -ENOMEM; 

That looks to be a pretty direct copy of what is already in
__handle_mm_fault().  Can they be consolidated?

-- Dave