On Mon, Jun 16, 2014 at 04:04:48PM +0200, Michal Hocko wrote:
> > For whatever reason, a user is stuck with thread-level granularity for
> > controllers which work that way, the user can use the old hierarchies
> > for them for the time being.
> 
> So he can mount memcg with new cgroup API and others with old?

Yes, you can read Documentation/cgroups/unified-hierarchy.txt for more
details.  I think I cc'd you when posting unified hierarchy patchset,
didn't I?

> > Nope, some changes don't fit that model.  CFTYPE_ON_ON_DFL is the
> > opposite. 
> 
> OK, I wasn't aware of this. On which branch I find this?

They're all in the mainline now.

> > Knobs marked with the flag only appear on the default
> > hierarchy (cgroup core internally calls it the default hierarchy as
> > this is the tree all the controllers are attached to by default).
> 
> I am not sure I understand. So they are visible only in the hierarchy
> mounted with the new cgroup API (sane or how is it called)?

Yeap.

Thanks.

-- 
tejun
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