Re: [RFC][PATCH 0/7] memcg: make memcg's life cycle the same as cgroup

Glauber Costa
2013-04-03T09:19:25Z

On 04/03/2013 01:11 PM, Li Zefan wrote:
> The historical reason that memcg didn't use css_get in some cases, is that
> cgroup couldn't be removed if there're still css refs. The situation has
> changed so that rmdir a cgroup will succeed regardless css refs, but won't
> be freed until css refs goes down to 0.
>
> This is an early post, and it's NOT TESTED. I just want to see if the changes
> are fine in general.
Well, from my PoV, this will in general greatly simplify memcg lifecycle
management.

Indeed, I can remember no other reason for those complications other
than the problem with removing directories. If cgroup no longer have
this limitation, I would much rather see your approach in.

I will look into the patches individually soon

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