Re: [PATCH v2 1/7] Basic kernel memory functionality for the MemoryController

[Glauber Costa]

On 09/18/2011 05:39 PM, Kirill A. Shutemov wrote:
> On Sun, Sep 18, 2011 at 04:11:21PM -0300, Glauber Costa wrote:
> > On 09/18/2011 04:05 PM, Kirill A. Shutemov wrote:
> > > On Sun, Sep 18, 2011 at 12:39:12AM -0300, Glauber Costa wrote:
> > > > > Always zero in root cgroup?
> > > >
> > > > Yes, if we're not accounting, it should be zero. WARN_ON, maybe?
> > >
> > > -ENOSYS?
> > I'd personally prefer WARN_ON. It is good symmetry from userspace PoV to
> > always be able to get a value out of it. Also, it something goes wrong
> > and it is not zero for some reason, this will help us find it.
>
> What's the point to get non-relevant value?
> What about -ENOSYS + WARN_ON?
Well,

what about not even registering kernel memory files for !root cgroup?
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