linux-kernel - Re: [PATCH 4/4] swap: clean-up #ifdef in page

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Message-ID: <20130802194333.GW715@cmpxchg.org>
Date:	Fri, 2 Aug 2013 15:43:33 -0400
From:	Johannes Weiner <hannes@...xchg.org>
To:	Joonsoo Kim <iamjoonsoo.kim@....com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Joonsoo Kim <js1304@...il.com>,
	Minchan Kim <minchan@...nel.org>, Mel Gorman <mgorman@...e.de>,
	Rik van Riel <riel@...hat.com>
Subject: Re: [PATCH 4/4] swap: clean-up #ifdef in page_mapping()

On Fri, Aug 02, 2013 at 11:07:59AM +0900, Joonsoo Kim wrote:
> PageSwapCache() is always false when !CONFIG_SWAP, so compiler
> properly discard related code. Therefore, we don't need #ifdef explicitly.
> 
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>

Acked-by: Johannes Weiner <hannes@...xchg.org>
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