Re: [mm] [PATCH 3/4] Memory cgroup hierarchical reclaim (v4)

[KAMEZAWA Hiroyuki]

On Tue, 9 Dec 2008 12:53:41 +0900
Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> wrote:

> Not yet.
> 
> Those dead locks cannot be fixed as long as reclaim path tries to hold cgroup_mutex.
> (current mmotm doesn't hold cgroup_mutex on reclaim path if !use_hierarchy and
> I'm testing with !use_hierarchy. It works well basically, but I got another bug
> at rmdir today, and digging it now.)
> 
> The dead lock I've fixed by memcg-avoid-dead-lock-caused-by-race-between-oom-and-cpuset_attach.patch
> is another one(removed cgroup_lock from oom code).
> 
Okay, then removing cgroup_lock from memory-reclaim path is a way to go..

Thank you.

-Kame

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