linux-kernel - Re: [PATCH v14 033/138] mm: Add folio

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Message-ID: <6a31a92c-0de7-bd96-f179-537f3a68b67b@suse.cz>
Date:   Wed, 11 Aug 2021 11:37:11 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        Christoph Hellwig <hch@....de>
Subject: Re: [PATCH v14 033/138] mm: Add folio_nid()

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@...radead.org>
> Reviewed-by: Christoph Hellwig <hch@....de>

Acked-by: Vlastimil Babka <vbabka@...e.cz>

> ---
>  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)
>  {
>