wait_task_zombie plus WNOWAIT question

[Vitaly Mayatskikh]

Hi!

I'm working on (sigh) next version of wait_task_* cleanups and stuck
in wait_task_zombie. I'm trying to move put_user(stat, wo->wo_stat)
code from all wait_task_* functions to common place, but
wait_task_zombie does not fill wo_stat if WNOWAIT flag is set and does
it w/o that flag. Is it done so by design, or I can make
user-visible change and add put_user in WNOWAIT path?

Thanks!
-- 
wbr, Vitaly
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