Re: [PATCH 4/5] writeback: per task dirty rate limit

Peter Zijlstra
2011-08-08T14:27:20Z

On Mon, 2011-08-08 at 22:23 +0800, Wu Fengguang wrote:
> + preempt_disable();
> + p = &__get_cpu_var(dirty_leaks);

p = &get_cpu_var(dirty_leaks);

> + if (*p > 0 && current->nr_dirtied < ratelimit) {
> + nr_pages_dirtied = min(*p, ratelimit - current->nr_dirtied);
> + *p -= nr_pages_dirtied;
> + current->nr_dirtied += nr_pages_dirtied;
> + }
> + preempt_enable();

put_cpu_var(dirty_leads);