Re: [patch 3/3]vmscan: cleanup kswapd_try_to_sleep

On Thu, 2011-07-28 at 19:03 +0800, Mel Gorman wrote:

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

quoted

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;

no, as the title says, this is a cleanup.

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