Re: while_each_thread() under rcu_read_lock() is broken?

[Roland McGrath]

> Paul, Roland, do you see any problems from the correctness pov,
> or a better fix for now?
> 
> Perhaps it also makes sense to keep the old variant renamed to
> while_each_thread_locked(), I dunno.

Did we verify that only de_thread() can create the situation where a
while_each_thread-style loop without either lock can be confused?  If
that's so, then just changing it to avoid the situation seems like it
would be less invasive overall.


Thanks,
Roland
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