Re: [PATCH] (18/22) task_thread_info - part 2/4

From: Roman Zippel
Date: Thu Aug 25 2005 - 04:15:49 EST


Hi,

On Thu, 25 Aug 2005, Al Viro wrote:

>
> +static inline void setup_thread_info(struct task_struct *p, struct thread_info *ti)
> +{
> + *ti = *p->thread_info;
> +}
> +
>
> - *ti = *orig->thread_info;
> *tsk = *orig;
> + setup_thread_info(tsk, ti);
> tsk->thread_info = ti;
> ti->task = tsk;

This introduces a subtle ordering requirement, where setup_thread_info
magically finds in the new task_struct the pointer to the old thread_info
to setup the new thread_info.
What is your problem with what I have in CVS? There it completes the basic
task_struct setup and _after_ that it can setup the thread_info.

Al, I would really prefer to merge this one myself, I'm only waiting for
the 2.6.13 release and since this is not a regression, I don't really
understand why this must be in 2.6.13.

bye, Roman
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