On 05/12/2013 10:10 PM, Minchan Kim wrote:
Normally, file I/O for reclaiming is asynchronous so that when page writeback is completed, reclaimed page will be rotated into LRU tail for fast reclaiming in next turn. But it makes unnecessary CPU overhead and more iteration with higher priority of reclaim could reclaim too many pages than needed pages. This patch frees reclaimed pages by paging out instantly without rotating back them into LRU's tail when the I/O is completed so that we can get out of reclaim loop as soon as poosbile and avoid unnecessary CPU overhead for moving them. Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx>
I like this approach and am looking forward to your v2 series, with the reworked patch 3/4. -- 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>