Re: [PATCH 8/8] vmscan: Kick flusher threads to clean pages whenreclaim is encountering dirty pages

[Johannes Weiner]

On Mon, Jul 19, 2010 at 02:11:30PM +0100, Mel Gorman wrote:
> @@ -933,13 +934,16 @@ keep_dirty:
>  		VM_BUG_ON(PageLRU(page) || PageUnevictable(page));
>  	}
>  
> +	/*
> +	 * If reclaim is encountering dirty pages, it may be because
> +	 * dirty pages are reaching the end of the LRU even though
> +	 * the dirty_ratio may be satisified. In this case, wake
> +	 * flusher threads to pro-actively clean some pages
> +	 */
> +	wakeup_flusher_threads(laptop_mode ? 0 : nr_dirty + nr_dirty / 2);

An argument of 0 means 'every dirty page in the system', I assume this
is not what you wanted, right?  Something like this?

	if (nr_dirty && !laptop_mode)
		wakeup_flusher_threads(nr_dirty + nr_dirty / 2);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/