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Date: Mon, 09 Jul 2012 11:49:08 +0900
From: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
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To: Johannes Weiner <hannes@cmpxchg.org>
CC: Andrew Morton <akpm@linux-foundation.org>, Michal Hocko <mhocko@suse.cz>,
        Hugh Dickins <hughd@google.com>, David Rientjes <rientjes@google.com>,
        linux-mm@kvack.org, cgroups@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [patch 05/11] mm: memcg: only check for PageSwapCache when uncharging
 anon
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(2012/07/05 9:44), Johannes Weiner wrote:
> Only anon pages that are uncharged at the time of the last page table
> mapping vanishing may be in swapcache.
> 
> When shmem pages, file pages, swap-freed anon pages, or just migrated
> pages are uncharged, they are known for sure to be not in swapcache.
> 
> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>

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