Re: [PATCHv2 3/4] mm: pack compound_dtor and compound_order into one word in struct page

[Michal Hocko]

On Mon 17-08-15 18:09:04, Kirill A. Shutemov wrote:
[...]
> +/* Keep the enum in sync with compound_page_dtors array in mm/page_alloc.c */
> +enum {
> +	NULL_COMPOUND_DTOR,
> +	COMPOUND_PAGE_DTOR,
> +	HUGETLB_PAGE_DTOR,
> +	NR_COMPOUND_DTORS,
> +};
[...]
> +static void free_compound_page(struct page *page);
> +compound_page_dtor * const compound_page_dtors[] = {
> +	NULL,
> +	free_compound_page,
> +	free_huge_page,
> +};
> +

Both need ifdef CONFIG_HUGETLB_PAGE as my compile test batter just found
out.
-- 
Michal Hocko
SUSE Labs
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