Re: [PATCH v2 07/12] s390: add pte_free_defer() for pgtables sharing page

[Alexander Gordeev]

On Sat, Jul 01, 2023 at 09:32:38PM -0700, Hugh Dickins wrote:
> On Thu, 29 Jun 2023, Hugh Dickins wrote:

Hi Hugh,

...

> +#ifdef CONFIG_TRANSPARENT_HUGEPAGE
> +void pte_free_defer(struct mm_struct *mm, pgtable_t pgtable)
> +{
> +	struct page *page;

If I got your and Claudio conversation right, you were going to add
here WARN_ON_ONCE() in case of mm_alloc_pgste(mm)?

> +	page = virt_to_page(pgtable);
> +	SetPageActive(page);
> +	page_table_free(mm, (unsigned long *)pgtable);
> +}
> +#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
> +
>  /*
>   * Base infrastructure required to generate basic asces, region, segment,
>   * and page tables that do not make use of enhanced features like EDAT1.

Thanks!