Re: 3.13-rc breaks MEMCG_SWAP

[Michal Hocko]

On Tue 17-12-13 11:13:39, Li Zefan wrote:
> On 2013/12/17 9:41, Hugh Dickins wrote:
> > On Mon, 16 Dec 2013, Tejun Heo wrote:
> >> On Mon, Dec 16, 2013 at 06:19:37PM +0100, Michal Hocko wrote:
> >>> I have to think about it some more (the brain is not working anymore
> >>> today). But what we really need is that nobody gets the same id while
> >>> the css is alive.
> 
> That's what I meant to do in my last reply.
> 
> But I'm confused by
> 
> "How would this work? .. the swap will be there
> after the last reference to css as well."

Sorry about the confusion. Johannes correctly pointed out that a css
reference is taken when we record memcg id and released after the record
is removed.

-- 
Michal Hocko
SUSE Labs
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