linux-kernel - Re: [patch 03/11] mm: shmem: do not try to uncharge known swapcache pages

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Message-ID: <4FFA42E4.1000003@jp.fujitsu.com>
Date:	Mon, 09 Jul 2012 11:33:08 +0900
From:	Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Johannes Weiner <hannes@...xchg.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Michal Hocko <mhocko@...e.cz>, Hugh Dickins <hughd@...gle.com>,
	David Rientjes <rientjes@...gle.com>, linux-mm@...ck.org,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [patch 03/11] mm: shmem: do not try to uncharge known swapcache
 pages

(2012/07/05 9:44), Johannes Weiner wrote:
> Once charged, swapcache pages can only be uncharged after they are
> removed from swapcache again.
> 
> Do not try to uncharge pages that are known to be in the swapcache, to
> allow future patches to remove checks for that in the uncharge code.
> 
> Signed-off-by: Johannes Weiner <hannes@...xchg.org>
> ---

Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>


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