Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S967253Ab3E2XSw (ORCPT ); Wed, 29 May 2013 19:18:52 -0400 Received: from cantor2.suse.de ([195.135.220.15]:48039 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S967176Ab3E2XRq (ORCPT ); Wed, 29 May 2013 19:17:46 -0400 From: Mel Gorman To: Andrew Morton Cc: Jiri Slaby , Valdis Kletnieks , Rik van Riel , Zlatko Calusic , Johannes Weiner , dormando , Michal Hocko , Jan Kara , Dave Chinner , Kamezawa Hiroyuki , Linux-FSDevel , Linux-MM , LKML , Mel Gorman Subject: [PATCH 4/8] mm: vmscan: Set zone flags before blocking Date: Thu, 30 May 2013 00:17:33 +0100 Message-Id: <1369869457-22570-5-git-send-email-mgorman@suse.de> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1369869457-22570-1-git-send-email-mgorman@suse.de> References: <1369869457-22570-1-git-send-email-mgorman@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1085 Lines: 32 In shrink_page_list a decision may be made to stall and flag a zone as ZONE_WRITEBACK so that if a large number of unqueued dirty pages are encountered later then the reclaimer will stall. Set ZONE_WRITEBACK before potentially going to sleep so it is noticed sooner. Signed-off-by: Mel Gorman --- mm/vmscan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 5b1a79c..5f80d01 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1445,8 +1445,8 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec, */ if (nr_writeback && nr_writeback >= (nr_taken >> (DEF_PRIORITY - sc->priority))) { - wait_iff_congested(zone, BLK_RW_ASYNC, HZ/10); zone_set_flag(zone, ZONE_WRITEBACK); + wait_iff_congested(zone, BLK_RW_ASYNC, HZ/10); } /* -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/