Hey, Matt.

On Thu, Oct 18, 2012 at 06:29:45PM -0700, Matt Helsley wrote:
> Yeah, that would be a nice cleanup too. I guess the ultra-careful way to
> remove this feature would be something like:
> 
>       Add an internal migration restriction (which may or may not be
>               exported as a userspace interface in a subsequent
>               patch).
> 
>       Make the cgroup freezer use it.
> 
>       Make the cgroup freezer WARN_ONCE() when the subsystem is first
>               mounted. Indicates that the behavior is going to
>               change.
> 
>       ... time passes ...
> 
>       Remove the use of the migration "lock" from the cgroup freezer
>               and the WARN_ONCE().
> 
> Which would also make the feature more obvious.

I don't think I'm gonna go that far for this.  I don't think we need
cgroup migration locking after all.

Thanks.

-- 
tejun
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