linux-kernel - Re: [PATCH 2/3] mm,compaction: Add COMPACTION

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Message-Id: <20101114144413.E022.A69D9226@jp.fujitsu.com>
Date:	Sun, 14 Nov 2010 14:45:07 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Mel Gorman <mel@....ul.ie>
Cc:	kosaki.motohiro@...fujitsu.com,
	Andrea Arcangeli <aarcange@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] mm,compaction: Add COMPACTION_BUILD

> To avoid #ifdef COMPACTION in a following patch, this patch adds
> COMPACTION_BUILD that is similar to NUMA_BUILD in operation.
> 
> Signed-off-by: Mel Gorman <mel@....ul.ie>
> ---
>  include/linux/kernel.h |    7 +++++++
>  1 files changed, 7 insertions(+), 0 deletions(-)
> 
> diff --git a/include/linux/kernel.h b/include/linux/kernel.h
> index 450092c..c00c5d1 100644
> --- a/include/linux/kernel.h
> +++ b/include/linux/kernel.h
> @@ -826,6 +826,13 @@ struct sysinfo {
>  #define NUMA_BUILD 0
>  #endif
>  
> +/* This helps us avoid #ifdef CONFIG_COMPACTION */
> +#ifdef CONFIG_COMPACTION
> +#define COMPACTION_BUILD 1
> +#else
> +#define COMPACTION_BUILD 0
> +#endif
> +

Looks good, of cource. but I think this patch can be fold [3/3] beucase 
it doesn't have any change.



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