On Wed, Dec 28, 2011 at 04:51:14PM +0000, Alan Cox wrote:
> > +	  be used for anything but the "sameness" test. Besides, the IDs are
> > +	  dynamic and valid only while object is alive, once it get freed or
> 
> Please explain your locking model which ensures a false sameness cannot
> occur due to object reuse as you do the comparison and scan.
> 

It can happen in case of object re-allocated from slab. But in case
of two living pids it's impossible to get same pointers for different
objects. Or I misunderstood the question, Alan? It's up to application
to not compare objects from dead tasks.

	Cyrill