From: Minchan Kim <minchan@kernel.org>
Date: Wed, 21 Oct 2015 22:03:48 +0000 (+1100)
Subject: mm: lru_deactivate_fn should clear PG_referenced
X-Git-Tag: KARO-TX6UL-2015-11-03~14^2~71
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ed46beea6813913bf30de95ed0a96f48c7ea4799;p=karo-tx-linux.git

mm: lru_deactivate_fn should clear PG_referenced

deactivate_page aims for accelerate for reclaiming through
moving pages from active list to inactive list so we should
clear PG_referenced for the goal.

Signed-off-by: Minchan Kim <minchan@kernel.org>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/swap.c b/mm/swap.c
index 7877fbaed809..674e2c93da4e 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -565,6 +565,7 @@ static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec,
 
 		del_page_from_lru_list(page, lruvec, lru + LRU_ACTIVE);
 		ClearPageActive(page);
+		ClearPageReferenced(page);
 		add_page_to_lru_list(page, lruvec, lru);
 
 		__count_vm_event(PGDEACTIVATE);