[Devel] Re: [RFD][PATCH] memcg: Move Usage at Task Move

YAMAMOTO Takashi yamamoto at valinux.co.jp
Wed Jun 11 22:20:33 PDT 2008


> > i think that you can redirect new charges in TASK to DEST
> > so that usage_of_task(TASK) will not grow.
> > 
> 
> Hmm, to do that, we have to handle complicated cgroup's attach ops.
> 
> at this moving, memcg is pointed by
>  - TASK->cgroup->memcg(CURR)
> after move
>  - TASK->another_cgroup->memcg(DEST)
> 
> This move happens before cgroup is replaced by another_cgroup.

currently cgroup_attach_task calls ->attach callbacks after
assigning tsk->cgroups.  are you talking about something else?

YAMAMOTO Takashi
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