On 7/15/21 5:35 AM, Matthew Wilcox (Oracle) wrote:
> This is the folio equivalent of page_to_nid().
>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
> Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
> ---
> include/linux/mm.h | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 8b79d9dfa6cb..c6e2a1682a6d 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -1428,6 +1428,11 @@ static inline int page_to_nid(const struct page *page)
> }
> #endif
>
> +static inline int folio_nid(const struct folio *folio)
> +{
> + return page_to_nid(&folio->page);
> +}
> +
> #ifdef CONFIG_NUMA_BALANCING
> static inline int cpu_pid_to_cpupid(int cpu, int pid)
> {
>
