On 02/23/2010 10:10 PM, Wu Fengguang wrote:
From: Chris Frost<frost@xxxxxxxxxxx> Ensure that cached pages in the inactive list are not prematurely evicted; move such pages to lru head when they are covered by - in-kernel heuristic readahead - an posix_fadvise(POSIX_FADV_WILLNEED) hint from an application
Signed-off-by: Chris Frost<frost@xxxxxxxxxxx> Signed-off-by: Steve VanDeBogart<vandebo@xxxxxxxxxxx> Signed-off-by: KAMEZAWA Hiroyuki<kamezawa.hiroyu@xxxxxxxxxxxxxx> Signed-off-by: Wu Fengguang<fengguang.wu@xxxxxxxxx>
Acked-by: Rik van Riel <riel@xxxxxxxxxx> When we get into the situation where readahead thrashing would occur, we will end up evicting other stuff more quickly from the inactive file list. However, that will be the case either with or without this code... -- 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>