From nobody Wed Apr 8 10:17:00 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D980BECAAA1 for ; Fri, 9 Sep 2022 09:27:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231319AbiIIJ1r (ORCPT ); Fri, 9 Sep 2022 05:27:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35936 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231336AbiIIJ05 (ORCPT ); Fri, 9 Sep 2022 05:26:57 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4FE05A4B13 for ; Fri, 9 Sep 2022 02:25:31 -0700 (PDT) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4MP9V96Vw2zlVnt; Fri, 9 Sep 2022 17:21:37 +0800 (CST) Received: from huawei.com (10.175.124.27) by canpemm500002.china.huawei.com (7.192.104.244) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Fri, 9 Sep 2022 17:25:28 +0800 From: Miaohe Lin To: CC: , , , , Subject: [PATCH 08/16] mm/page_alloc: add missing is_migrate_isolate() check in set_page_guard() Date: Fri, 9 Sep 2022 17:24:43 +0800 Message-ID: <20220909092451.24883-9-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20220909092451.24883-1-linmiaohe@huawei.com> References: <20220909092451.24883-1-linmiaohe@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To canpemm500002.china.huawei.com (7.192.104.244) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" In MIGRATE_ISOLATE case, zone freepage state shouldn't be modified as caller will take care of it. Add missing is_migrate_isolate() here to avoid possible unbalanced freepage state. Signed-off-by: Miaohe Lin --- mm/page_alloc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index a35ef385d906..94baf33da865 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -873,7 +873,8 @@ static inline bool set_page_guard(struct zone *zone, st= ruct page *page, INIT_LIST_HEAD(&page->buddy_list); set_page_private(page, order); /* Guard pages are not available for any usage */ - __mod_zone_freepage_state(zone, -(1 << order), migratetype); + if (!is_migrate_isolate(migratetype)) + __mod_zone_freepage_state(zone, -(1 << order), migratetype); =20 return true; } --=20 2.23.0