From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752165AbcG2DZA (ORCPT ); Thu, 28 Jul 2016 23:25:00 -0400 Received: from LGEAMRELO12.lge.com ([156.147.23.52]:60521 "EHLO lgeamrelo12.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752042AbcG2DY7 (ORCPT ); Thu, 28 Jul 2016 23:24:59 -0400 X-Original-SENDERIP: 156.147.1.126 X-Original-MAILFROM: minchan@kernel.org X-Original-SENDERIP: 10.177.223.161 X-Original-MAILFROM: minchan@kernel.org From: Minchan Kim To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Mel Gorman , Johannes Weiner , Rik van Riel , Minchan Kim Subject: [PATCH] mm: move swap-in anonymous page into active list Date: Fri, 29 Jul 2016 12:25:40 +0900 Message-Id: <1469762740-17860-1-git-send-email-minchan@kernel.org> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Every swap-in anonymous page starts from inactive lru list's head. It should be activated unconditionally when VM decide to reclaim because page table entry for the page always usually has marked accessed bit. Thus, their window size for getting a new referece is 2 * NR_inactive + NR_active while others is NR_active + NR_active. It's not fair that it has more chance to be referenced compared to other newly allocated page which starts from active lru list's head. Signed-off-by: Minchan Kim --- mm/memory.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/memory.c b/mm/memory.c index 4425b6059339..3a730b920242 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2642,6 +2642,7 @@ int do_swap_page(struct fault_env *fe, pte_t orig_pte) if (page == swapcache) { do_page_add_anon_rmap(page, vma, fe->address, exclusive); mem_cgroup_commit_charge(page, memcg, true, false); + activate_page(page); } else { /* ksm created a completely new copy */ page_add_new_anon_rmap(page, vma, fe->address, false); mem_cgroup_commit_charge(page, memcg, false, false); -- 1.9.1