Messages in this thread | | | Date | Wed, 1 Jul 2009 15:55:44 +0200 | From | Oleg Nesterov <> | Subject | Re: wait_task_zombie plus WNOWAIT question |
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On 07/01, Vitaly Mayatskikh wrote: > > 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
Only waitid() can use WNOWAIT, and in this case ->wo_stat == NULL.
> 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?
Just check do not do put_user(->wo_stat) if it is NULL in do_wait pathes.
Oleg.
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