Re: [PATCH 1/3] vmscan,memcg: memcg aware swap token

From: KAMEZAWA Hiroyuki
Date: Mon May 16 2011 - 04:08:30 EST

On Fri, 13 May 2011 20:40:13 +0900
KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> wrote:

> Currently, memcg reclaim can disable swap token even if the swap token
> mm doesn't belong in its memory cgroup. It's slightly risky. If an
> admin creates very small mem-cgroup and silly guy runs contentious heavy
> memory pressure workload, every tasks 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 disable it.
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>

Thank you

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>

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