On 04/13, Andrei Vagin wrote:
>
> +static void swap_mm(struct mm_struct *prev_mm, struct mm_struct *target_mm)
> +{
> + struct task_struct *tsk = current;
> + struct mm_struct *active_mm;
> +
> + task_lock(tsk);
> + /* Hold off tlb flush IPIs while switching mm's */
> + local_irq_disable();
> +
> + sync_mm_rss(prev_mm);
> +
> + vmacache_flush(tsk);
> +
> + active_mm = tsk->active_mm;
> + if (active_mm != target_mm) {
> + mmgrab(target_mm);
> + tsk->active_mm = target_mm;
> + }
> + tsk->mm = target_mm;
> + switch_mm_irqs_off(active_mm, target_mm, tsk);
> + local_irq_enable();
> + task_unlock(tsk);
> +#ifdef finish_arch_post_lock_switch
> + finish_arch_post_lock_switch();
> +#endif
> +
> + if (active_mm != target_mm)
> + mmdrop(active_mm);
> +}
I think this should be unified with kthread_use_mm() somehow...
And does it really need the "prev_mm" argument? It must be tsk->mm, no?
Oleg.
