Re: [PATCH -mm v2 06/11] pagewalk: add size to struct mm_walk

[Dave Hansen]

On 06/12/2014 02:48 PM, Naoya Horiguchi wrote:
> This variable is helpful if we try to share the callback function between
> multiple slots (for example between pte_entry() and pmd_entry()) as done
> in later patches.

smaps_pte() already does this:

static int smaps_pte(pte_t *pte, unsigned long addr, unsigned long end,
                        struct mm_walk *walk)
...
        unsigned long ptent_size = end - addr;

Other than the hugetlb handler, can't we always imply the size from
end-addr?
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