From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755518AbaCNGh5 (ORCPT ); Fri, 14 Mar 2014 02:37:57 -0400 Received: from lgeamrelo02.lge.com ([156.147.1.126]:56012 "EHLO LGEAMRELO02.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755377AbaCNGha (ORCPT ); Fri, 14 Mar 2014 02:37:30 -0400 X-AuditID: 9c93017e-b7cf9ae000004b4b-e1-5322a3a61439 From: Minchan Kim To: Andrew Morton Cc: Rik van Riel , Mel Gorman , Hugh Dickins , Dave Hansen , Johannes Weiner , KOSAKI Motohiro , linux-mm@kvack.org, linux-kernel@vger.kernel.org, John Stultz , Jason Evans , Minchan Kim Subject: [RFC 5/6] mm: reclaim lazyfree pages in swapless system Date: Fri, 14 Mar 2014 15:37:49 +0900 Message-Id: <1394779070-8545-6-git-send-email-minchan@kernel.org> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1394779070-8545-1-git-send-email-minchan@kernel.org> References: <1394779070-8545-1-git-send-email-minchan@kernel.org> X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If there are lazyfree pages in system, shrink inactive anonymous LRU to discard lazyfree pages regardless of existing avaialable swap. Signed-off-by: Minchan Kim --- mm/vmscan.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 98a1c3ffcaab..ad73e053c581 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1889,8 +1889,13 @@ static void get_scan_count(struct lruvec *lruvec, struct scan_control *sc, if (!global_reclaim(sc)) force_scan = true; - /* If we have no swap space, do not bother scanning anon pages. */ - if (!sc->may_swap || (get_nr_swap_pages() <= 0)) { + /* + * If we have no swap space and lazyfree pages, + * do not bother scanning anon pages. + */ + if (!sc->may_swap || + (get_nr_swap_pages() <= 0 && + zone_page_state(zone, NR_LAZYFREE_PAGES) <= 0)) { scan_balance = SCAN_FILE; goto out; } -- 1.9.0