From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756716Ab1HaPmQ (ORCPT ); Wed, 31 Aug 2011 11:42:16 -0400 Received: from mail-yw0-f46.google.com ([209.85.213.46]:38973 "EHLO mail-yw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756664Ab1HaPmP (ORCPT ); Wed, 31 Aug 2011 11:42:15 -0400 From: Minchan Kim To: Andrew Morton Cc: linux-mm , LKML , Mel Gorman , Johannes Weiner , Rik van Riel , KOSAKI Motohiro , Minchan Kim Subject: [PATCH] vmscan: Do reclaim stall in case of mlocked page. Date: Tue, 15 Nov 2011 00:37:23 +0900 Message-Id: <1321285043-3470-1-git-send-email-minchan.kim@gmail.com> X-Mailer: git-send-email 1.7.6 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [1] made avoid unnecessary reclaim stall when second shrink_page_list(ie, synchronous shrink_page_list) try to reclaim page_list which has not-dirty pages. But it seems rather awkawrd on unevictable page. The unevictable page in shrink_page_list would be moved into unevictable lru from page_list. So it would be not on page_list when shrink_page_list returns. Nevertheless it skips reclaim stall. This patch fixes it so that it can do reclaim stall in case of mixing mlocked pages and writeback pages on page_list. [1] 7d3579e,vmscan: narrow the scenarios in whcih lumpy reclaim uses synchrounous reclaim CC: Mel Gorman CC: Johannes Weiner CC: Rik van Riel CC: KOSAKI Motohiro Signed-off-by: Minchan Kim --- mm/vmscan.c | 1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 2300342..23878de 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -987,7 +987,6 @@ cull_mlocked: try_to_free_swap(page); unlock_page(page); putback_lru_page(page); - reset_reclaim_mode(sc); continue; activate_locked: -- 1.7.6