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* Esben Nielsen <simlo@phys.au.dk> wrote:
> +static inline void rcu_read_lock(void)
> +{
> + preempt_disable();
> + __get_cpu_var(rcu_data).active_readers++;
> + preempt_enable();
> +}
this is buggy. Nothing guarantees that we'll do the rcu_read_unlock() on
the same CPU, and hence ->active_readers can get out of sync.
Ingo
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