On Thu, Jul 28, 2011 at 04:13:09PM +0800, Shaohua Li wrote:

cleanup kswapd_try_to_sleep() a little bit. Sometimes kswapd doesn't
really sleep. In such case, don't call prepare_to_wait/finish_wait.
It just wastes CPU.

Signed-off-by: Shaohua Li <redacted>

Out of curiousity, under what circumstances is the CPU usage
noticeable? The patch itself seems fine so;

Acked-by: Mel Gorman <mgorman@suse.de>

-- 
Mel Gorman
SUSE Labs

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