Re: [RFC][PATCH 04/20] pspace: Allow multiple instaces of the process id namespace

[Kirill Korotaev <dev@sw.ru>]

> > > +static inline int pspace_task_visible(struct pspace *pspace, struct
> >
> > task_struct *tsk)
> >
> > > +{
> > > +	return (tsk->pspace == pspace) ||
> > > +		((tsk->pspace->child_reaper.pspace == pspace) &&
> > > +		 (tsk->pspace->child_reaper.task == tsk));
> >
> > <<< the logic with child_reaper which can be somehow partly inside pspace... and
> > this check is not that abvious.
>
>
> This is the check for what shows up in /proc.
>
> Given that is how I have explicitly documented things to work, (the
> init process straddles the boundary) I fail to see how it is not obvious.  
I was confused by the fact that child_reaper.pspace is actually a parent 
pspace.

Kirill

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