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SubjectRe: [PATCH 1/3] writeback: Account for time spent congestion_waited
On Thu, Aug 26, 2010 at 04:14:14PM +0100, Mel Gorman wrote:
> There is strong evidence to indicate a lot of time is being spent in
> congestion_wait(), some of it unnecessarily. This patch adds a
> tracepoint for congestion_wait to record when congestion_wait() occurred
> and how long was spent.
> Signed-off-by: Mel Gorman <>

Reviewed-by: Johannes Weiner <>

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