Re: [PATCH v1 14/36] mm/mm/percpu-km: drop nth_page() usage within single allocation

From: Liam R. Howlett
Date: Fri Aug 29 2025 - 11:00:55 EST


* David Hildenbrand <david@xxxxxxxxxx> [250827 18:06]:
> We're allocating a higher-order page from the buddy. For these pages
> (that are guaranteed to not exceed a single memory section) there is no
> need to use nth_page().
>
> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>

Acked-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>


> ---
> mm/percpu-km.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/percpu-km.c b/mm/percpu-km.c
> index fe31aa19db81a..4efa74a495cb6 100644
> --- a/mm/percpu-km.c
> +++ b/mm/percpu-km.c
> @@ -69,7 +69,7 @@ static struct pcpu_chunk *pcpu_create_chunk(gfp_t gfp)
> }
>
> for (i = 0; i < nr_pages; i++)
> - pcpu_set_page_chunk(nth_page(pages, i), chunk);
> + pcpu_set_page_chunk(pages + i, chunk);
>
> chunk->data = pages;
> chunk->base_addr = page_address(pages);
> --
> 2.50.1
>