linux-kernel - Re: [PATCH 03/11] memcg: change defines to an enum

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Date:	Mon, 25 Jun 2012 21:11:55 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Glauber Costa <glommer@...allels.com>
cc:	cgroups@...r.kernel.org, linux-mm@...ck.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Frederic Weisbecker <fweisbec@...il.com>,
	Pekka Enberg <penberg@...nel.org>,
	Michal Hocko <mhocko@...e.cz>,
	Johannes Weiner <hannes@...xchg.org>,
	Christoph Lameter <cl@...ux.com>, devel@...nvz.org,
	kamezawa.hiroyu@...fujitsu.com, Tejun Heo <tj@...nel.org>
Subject: Re: [PATCH 03/11] memcg: change defines to an enum

On Mon, 25 Jun 2012, Glauber Costa wrote:

> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 8e601e8..9352d40 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -387,9 +387,12 @@ enum charge_type {
>  };
>  
>  /* for encoding cft->private value on file */
> -#define _MEM			(0)
> -#define _MEMSWAP		(1)
> -#define _OOM_TYPE		(2)
> +enum res_type {
> +	_MEM,
> +	_MEMSWAP,
> +	_OOM_TYPE,
> +};
> +
>  #define MEMFILE_PRIVATE(x, val)	((x) << 16 | (val))
>  #define MEMFILE_TYPE(val)	((val) >> 16 & 0xffff)
>  #define MEMFILE_ATTR(val)	((val) & 0xffff)

Shouldn't everything that does MEMFILE_TYPE() now be using type 
enum res_type rather than int?
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