On Fri, Jan 17, 2014 at 02:32:21PM +0000, Mel Gorman wrote: > Developers occasionally try and optimise PFN scanners by using page_order > but miss that in general it requires zone->lock. This has happened twice for > compaction.c and rejected both times. This patch clarifies the documentation > of page_order and adds a note to compaction.c why page_order is not used. > > Signed-off-by: Mel Gorman <mgorman@xxxxxxx> Except Laura pointed out, Acked-by: Minchan Kim <minchan@xxxxxxxxxx> Thanks for following up this issue without forgetting. -- Kind regards, Minchan Kim -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>