Re: [RFC PATCH] proc, pidns: Add highpid

* Andy Lutomirski:

On Nov 30, 2014 1:47 AM, "Florian Weimer" [off-list ref] wrote:

quoted

* Andy Lutomirski:

quoted

The initial implementation is straightforward: highpid is simply a
64-bit counter. If a high-end system can fork every 3 ns (which
would be amazing, given that just allocating a pid requires at
atomic operation), it would take well over 1000 years for highpid to
wrap.

I'm not sure if I'm reading the patch correctly, but is the counter
namespaced?  If yes, why?

It's namespaced so that CRIU can migrate/restore a whole pid namespace.

Oh well, this requirement is at odds with system-wide uniqueness.  Is
CRIU really that important? :-)