[PATCH] namespaces: fix exit race by splitting exit

[Daniel Hokka Zakrisson]

Serge E. Hallyn wrote:
> Ok, could you verify that the following patch at least solves
> the oopsing?
>
> (I can't reproduce the oops with Daniel's test prog)
>
> thanks,
> -serge

Indeed, this patch solves the oopsing, but so did the last one. I think I
finally managed to figure out why too, as release_task would be called
with current referring to the parent process, or whoever is reaping the
process with the last reference to the namespace. Right?

Regardless, I have to say I prefer this patch.

-- 
Daniel Hokka Zakrisson