On Fri, 20 Oct 2017, changbin...@intel.com wrote:
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index 269b5df..2a960fc 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -501,6 +501,43 @@ void prep_transhuge_page(struct page *page)
> set_compound_page_dtor(page, TRANSHUGE_PAGE_DTOR);
> }
>
> +struct page *alloc_transhuge_page_vma(gfp_t gfp_mask,
> + struct vm_area_struct *vma, unsigned long addr)
> +{
> + struct page *page;
> +
> + page = alloc_pages_vma(gfp_mask | __GFP_COMP, HPAGE_PMD_ORDER,
> + vma, addr, numa_node_id(), true);
> + if (unlikely(!page))
> + return NULL;
> + prep_transhuge_page(page);
> + return page;
> +}
> +
> +struct page *alloc_transhuge_page_nodemask(gfp_t gfp_mask,
> + int preferred_nid, nodemask_t *nmask)
> +{
> + struct page *page;
> +
> + page = __alloc_pages_nodemask(gfp_mask | __GFP_COMP, HPAGE_PMD_ORDER,
> + preferred_nid, nmask);
> + if (unlikely(!page))
> + return NULL;
> + prep_transhuge_page(page);
> + return page;
> +}
> +
> +struct page *alloc_transhuge_page(gfp_t gfp_mask)
> +{
> + struct page *page;
> +
> + page = alloc_pages(gfp_mask | __GFP_COMP, HPAGE_PMD_ORDER);
> + if (unlikely(!page))
> + return NULL;
> + prep_transhuge_page(page);
> + return page;
> +}
> +
These look pretty similar to the code used for huge pages (aside from the
call to prep_transhuge_page(). Maybe we can have common allocation
primitives for huge pages?
--
To unsubscribe from this list: send the line "unsubscribe linux-doc" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
