From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Nishimura Daisuke <d-nishimura@mtf.biglobe.ne.jp>
Subject: Re: (resend) [PATCH] vmscan,memcg: memcg aware swap token
Date: Tue, 26 Apr 2011 17:50:21 +0900 [thread overview]
Message-ID: <20110426175021.c783e57d.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <20110426170146.F396.A69D9226@jp.fujitsu.com>
On Tue, 26 Apr 2011 16:59:19 +0900 (JST)
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote:
> Currently, memcg reclaim can disable swap token even if the swap token
> mm doesn't belong in its memory cgroup. It's slightly riskly. If an
> admin makes very small mem-cgroup and silly guy runs contenious heavy
> memory pressure workloa, whole tasks in the system are going to lose
> swap-token and then system may become unresponsive. That's bad.
>
> This patch adds 'memcg' parameter into disable_swap_token(). and if
> the parameter doesn't match swap-token, VM doesn't put swap-token.
>
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Ack. Thank you.
-Kame
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next prev parent reply other threads:[~2011-04-26 8:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-26 7:59 KOSAKI Motohiro
2011-04-26 8:50 ` KAMEZAWA Hiroyuki [this message]
2011-04-26 20:07 ` Andrew Morton
2011-04-27 1:19 ` KOSAKI Motohiro
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