Re: [RFC] [PATCH 00/13] Introduce task_pid api

[Serge E. Hallyn]

Quoting Ray Bryant (raybry@xxxxxxxxxxxxxxxxx):
> On Monday 14 November 2005 15:23, Serge E. Hallyn wrote:
> > --
> >
> > I'm part of a project implementing checkpoint/restart processes.
> > After a process or group of processes is checkpointed, killed, and
> > restarted, the changing of pids could confuse them.  There are many
> > other such issues, but we wanted to start with pids.
> >
> 
> I've read through the rest of this thread, but it seems to me that the real 
> problems are in the basic assumptions you are making that are driving the 
> rest of this effort and perhaps we should be examining those assumptions 
> instead of your patch.   

Ok.

> For example, from what I've read (particularly Hubertus's post that the pid 
> could be in a register), I'm inferring that what you want to do is to be able 
> to checkpoint/restart an arbitrary process at an arbitrary time and without 
> any special support for checkpoint/restart in that process.   

Yes.

> Also (c. f. Dave Hansen's post on the number of Xen virtual machines 
> required),  you appear to think that the number of processes on the system 
> for which checkpoint/restart should be enabled is large (more or less the 
> same as the number of processes on the system).

Right.

> Am I reading this correctly?

As far as I can see, yes.

-serge
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