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

[Wu Fengguang]

On Mon, Aug 08, 2011 at 10:26:52PM +0800, Peter Zijlstra wrote:
> 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);

Good to know these, thanks!
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