Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932349Ab3CYGWo (ORCPT ); Mon, 25 Mar 2013 02:22:44 -0400 Received: from LGEMRELSE1Q.lge.com ([156.147.1.111]:49107 "EHLO LGEMRELSE1Q.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932156Ab3CYGWD (ORCPT ); Mon, 25 Mar 2013 02:22:03 -0400 X-AuditID: 9c93016f-b7cecae000004cf8-2e-514fed05e6f0 From: Minchan Kim To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Mel Gorman , Rik van Riel , Johannes Weiner , Hugh Dickins , Sangseok Lee , Minchan Kim Subject: [RFC 2/4] mm: make shrink_page_list with pages from multiple zones Date: Mon, 25 Mar 2013 15:21:32 +0900 Message-Id: <1364192494-22185-2-git-send-email-minchan@kernel.org> X-Mailer: git-send-email 1.8.2 In-Reply-To: <1364192494-22185-1-git-send-email-minchan@kernel.org> References: <1364192494-22185-1-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 Content-Length: 1304 Lines: 42 Now shrink_page_list expects all pages come from a same zone but it's too limited to use it. This patch removes the dependency so next patch can use shrink_page_list with pages from multiple zones. Signed-off-by: Minchan Kim --- mm/vmscan.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index d3dc95f..9434ba2 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -705,7 +705,8 @@ static unsigned long shrink_page_list(struct list_head *page_list, goto keep; VM_BUG_ON(PageActive(page)); - VM_BUG_ON(page_zone(page) != zone); + if (zone) + VM_BUG_ON(page_zone(page) != zone); sc->nr_scanned++; @@ -951,7 +952,7 @@ keep: * back off and wait for congestion to clear because further reclaim * will encounter the same problem */ - if (nr_dirty && nr_dirty == nr_congested && global_reclaim(sc)) + if (nr_dirty && nr_dirty == nr_congested && global_reclaim(sc) && zone) zone_set_flag(zone, ZONE_CONGESTED); free_hot_cold_page_list(&free_pages, 1); -- 1.8.2 -- 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/