linux-kernel - Re: [PATCH] mm: unhide vmstat_text definition for CONFIG

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Date:	Mon, 16 May 2016 08:54:55 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Michal Hocko <mhocko@...nel.org>
cc:	Arnd Bergmann <arnd@...db.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Mel Gorman <mgorman@...hsingularity.net>,
	Joonsoo Kim <iamjoonsoo.kim@....com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: unhide vmstat_text definition for CONFIG_SMP

On Mon, 16 May 2016, Michal Hocko wrote:

> I agree with Christoph that vmstat_refresh is PROC_FS only so we should
> fix it there. It is not like this would be generally reusable helper...
> Why don't we just do:

Looks good.

Acked-by: Christoph Lameter <cl@...ux.com>

> ---
> diff --git a/mm/vmstat.c b/mm/vmstat.c
> index 57a24e919907..c759b526287b 100644
> --- a/mm/vmstat.c
> +++ b/mm/vmstat.c
> @@ -1370,6 +1370,7 @@ static void refresh_vm_stats(struct work_struct *work)
>  	refresh_cpu_vm_stats(true);
>  }
>
> +#ifdef CONFIG_PROC_FS
>  int vmstat_refresh(struct ctl_table *table, int write,
>  		   void __user *buffer, size_t *lenp, loff_t *ppos)
>  {
> @@ -1422,6 +1423,7 @@ int vmstat_refresh(struct ctl_table *table, int write,
>  		*lenp = 0;
>  	return 0;
>  }
> +#endif
>
>  static void vmstat_update(struct work_struct *w)
>  {
>