On Mon, Mar 18, 2013 at 07:08:50PM +0800, Wanpeng Li wrote:
> >@@ -2735,8 +2748,12 @@ static unsigned long balance_pgdat(pg_data_t *pgdat, int order,
> > end_zone = i;
> > break;
> > } else {
> >- /* If balanced, clear the congested flag */
> >+ /*
> >+ * If balanced, clear the dirty and congested
> >+ * flags
> >+ */
> > zone_clear_flag(zone, ZONE_CONGESTED);
> >+ zone_clear_flag(zone, ZONE_DIRTY);
>
> Hi Mel,
>
> There are two places in balance_pgdat clear ZONE_CONGESTED flag, one
> is during scan zone which have free_pages <= high_wmark_pages(zone), the
> other one is zone get balanced after reclaim, it seems that you miss the
> later one.
>
I did and it's fixed now. Thanks.
--
Mel Gorman
SUSE Labs
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