On 07/19/2010 09:11 AM, Mel Gorman wrote:
From: Wu Fengguang<fengguang.wu@xxxxxxxxx> A background flush work may run for ever. So it's reasonable for it to mimic the kupdate behavior of syncing old/expired inodes first. This behavior also makes sense from the perspective of page reclaim. File pages are added to the inactive list and promoted if referenced after one recycling. If not referenced, it's very easy for pages to be cleaned from reclaim context which is inefficient in terms of IO. If background flush is cleaning pages, it's best it cleans old pages to help minimise IO from reclaim. Signed-off-by: Wu Fengguang<fengguang.wu@xxxxxxxxx> Signed-off-by: Mel Gorman<mel@xxxxxxxxx>
Acked-by: Rik van Riel <riel@xxxxxxxxxx> It can probably be optimized, but we really need something like this... -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>