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 <shaohua.li@xxxxxxxxx> Out of curiousity, under what circumstances is the CPU usage noticeable? The patch itself seems fine so; Acked-by: Mel Gorman <mgorman@xxxxxxx> -- Mel Gorman SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>