From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750803AbdAXHtX (ORCPT ); Tue, 24 Jan 2017 02:49:23 -0500 Received: from mail-qt0-f195.google.com ([209.85.216.195]:36656 "EHLO mail-qt0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750704AbdAXHtV (ORCPT ); Tue, 24 Jan 2017 02:49:21 -0500 From: Jia He To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Andrew Morton , Naoya Horiguchi , Michal Hocko , Mike Kravetz , "Aneesh Kumar K.V" , Gerald Schaefer , zhong jiang , "Kirill A. Shutemov" , Vaishali Thakkar , Johannes Weiner , Mel Gorman , Vlastimil Babka , Minchan Kim , Rik van Riel , Jia He Subject: [PATCH RFC 3/3] mm, vmscan: correct prepare_kswapd_sleep return value Date: Tue, 24 Jan 2017 15:49:04 +0800 Message-Id: <1485244144-13487-4-git-send-email-hejianet@gmail.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1485244144-13487-1-git-send-email-hejianet@gmail.com> References: <1485244144-13487-1-git-send-email-hejianet@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When there is no reclaimable pages in the zone, even the zone is not balanced, we let kswapd go sleeping. That is prepare_kswapd_sleep will return true in this case. Signed-off-by: Jia He --- mm/vmscan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 7396a0a..54445e2 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -3140,7 +3140,8 @@ static bool prepare_kswapd_sleep(pg_data_t *pgdat, int order, int classzone_idx) if (!managed_zone(zone)) continue; - if (!zone_balanced(zone, order, classzone_idx)) + if (!zone_balanced(zone, order, classzone_idx) + && !zone_reclaimable_pages(zone)) return false; } -- 2.5.5