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

From: Peter Zijlstra
Date: Mon Aug 08 2011 - 10:27:23 EST

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In reply to: Wu Fengguang: "Re: [PATCH 4/5] writeback: per task dirty rate limit"
Next in thread: Wu Fengguang: "Re: [PATCH 4/5] writeback: per task dirty rate limit"
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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);
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