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SubjectRe: [PATCH 03/13] writeback: per-task rate limit on balance_dirty_pages()
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On Wed, 2010-11-17 at 12:27 +0800, Wu Fengguang wrote:
> + if (unlikely(current->nr_dirtied >= current->nr_dirtied_pause ||
> + bdi->dirty_exceeded)) {
> + balance_dirty_pages(mapping, current->nr_dirtied);
> + current->nr_dirtied = 0;
> }

Was it a conscious choice to use
current->nr_dirtied = 0
over
current->nr_dirtied -= current->nr_dirtied_pause
?

The former will cause a drift in pause times due to truncation of the
excess.


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