[PATCH 0/2] memcg patches around event counting...softlimit and thresholds v2

[KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>]

Thank you for review. This is v2.

Thanks,
-Kame


On Fri, 12 Feb 2010 15:44:22 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote:

> These 2 patches are updates for memcg's event counter.
> 
> Memcg has 2 counters but they counts the same thing. Just usages are
> different from each other. This patch tries to combine them.
> 
> Event counting is done per page but event check is done per charge.
> But, now, move_task at el. does charge() in batched manner. So, it's better
> to do event check per page (not per charge.)
> 
> (*) There may be an opinion that threshold check should be done at charge().
>     But, at charge(), event counter is not incremented, anyway.
>     Then, some another idea is appreciated to check thresholds at charges.
>     In other view, checking threshold at "precharge" can cause miss-fire of 
>     event notifier. So, checking threshold at commit has some sense, I think.
> 
> I wonder I should add RFC..but this patch clears my concerns since memcg-threshold
> was merged. So, I didn't.
> 
> Any comment is welcome. (I'm sorry if my reply is delayed.)
> 
> Thanks,
> -Kame
> 
> 

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