From: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> With synchrounous lumpy reclaim, there is no reason to give up to reclaim pages even if page is locked. This patch uses lock_page() instead of trylock_page() in this case. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Signed-off-by: Mel Gorman <mel@xxxxxxxxx> --- mm/vmscan.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 5979850..79bd812 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -665,7 +665,9 @@ static unsigned long shrink_page_list(struct list_head *page_list, page = lru_to_page(page_list); list_del(&page->lru); - if (!trylock_page(page)) + if (sync_writeback == PAGEOUT_IO_SYNC) + lock_page(page); + else if (!trylock_page(page)) goto keep; VM_BUG_ON(PageActive(page)); -- 1.7.1 -- 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>