Re: RFC [patch 13/34] PID Virtualization Define new task_pid api

[Arjan van de Ven <arjan@infradead.org>]

On Tue, 2006-01-24 at 21:11 +0000, Alan Cox wrote:
> On Maw, 2006-01-24 at 12:26 -0700, Eric W. Biederman wrote:
> > There is at least NFS lockd that appreciates having a single integer
> > per process unique identifier.  So there is a practical basis for
> > wanting such a thing.
> 
> Which gets us back to refcounting.
> 
> > At least for this first round I think talking about a kpid
> > as a container, pid pair makes a lot of sense for the moment, as
> > the other implementations just confuse things.
> 
> As an abstract object a kpid to me means a single identifier which
> uniquely identifies the process and which in its component parts be they
> pointers or not uniquely identifies the process in the container and the
> container in the system, both correctly refcounted against re-use.

they why not just straight use the task struct pointer for this? It's
guaranteed unique.. ;)


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