linux-kernel - Re: [PATCH 1/2] mm/page_alloc: Move free_the

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Date:   Thu, 3 Jun 2021 13:12:26 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     Mel Gorman <mgorman@...hsingularity.net>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Dave Hansen <dave.hansen@...ux.intel.com>,
        Michal Hocko <mhocko@...nel.org>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux-MM <linux-mm@...ck.org>
Subject: Re: [PATCH 1/2] mm/page_alloc: Move free_the_page

On 6/3/21 10:46 AM, Mel Gorman wrote:
> In the next page, free_compount_page is going to use the common helper
> free_the_page. This patch moves the definition to ease review. No
> functional change.
> 
> Signed-off-by: Mel Gorman <mgorman@...hsingularity.net>

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

> ---
>  mm/page_alloc.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 4c468aa596aa..99ddac0ffece 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -687,6 +687,14 @@ static void bad_page(struct page *page, const char *reason)
>  	add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE);
>  }
>  
> +static inline void free_the_page(struct page *page, unsigned int order)
> +{
> +	if (order == 0)		/* Via pcp? */
> +		free_unref_page(page);
> +	else
> +		__free_pages_ok(page, order, FPI_NONE);
> +}
> +
>  /*
>   * Higher-order pages are called "compound pages".  They are structured thusly:
>   *
> @@ -5345,14 +5353,6 @@ unsigned long get_zeroed_page(gfp_t gfp_mask)
>  }
>  EXPORT_SYMBOL(get_zeroed_page);
>  
> -static inline void free_the_page(struct page *page, unsigned int order)
> -{
> -	if (order == 0)		/* Via pcp? */
> -		free_unref_page(page);
> -	else
> -		__free_pages_ok(page, order, FPI_NONE);
> -}
> -
>  /**
>   * __free_pages - Free pages allocated with alloc_pages().
>   * @page: The page pointer returned from alloc_pages().
>