From mboxrd@z Thu Jan 1 00:00:00 1970 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 DE640C433EF for ; Fri, 4 Mar 2022 09:35:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238014AbiCDJgN (ORCPT ); Fri, 4 Mar 2022 04:36:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53516 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237246AbiCDJfu (ORCPT ); Fri, 4 Mar 2022 04:35:50 -0500 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BEDEA7307E for ; Fri, 4 Mar 2022 01:35:03 -0800 (PST) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.57]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4K92jM4PLQzdbB0; Fri, 4 Mar 2022 17:33:43 +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 15.1.2308.21; Fri, 4 Mar 2022 17:35:01 +0800 From: Miaohe Lin To: CC: , , , , , , , , , , , , , , , , , , Subject: [PATCH 05/16] mm/migration: fix the confusing PageTransHuge check Date: Fri, 4 Mar 2022 17:33:58 +0800 Message-ID: <20220304093409.25829-6-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20220304093409.25829-1-linmiaohe@huawei.com> References: <20220304093409.25829-1-linmiaohe@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) 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 prep_transhuge_page should be called when PageTransHuge(page) is true. The newly allocated new_page is not yet PageTransHuge though it could pass the check as PageTransHuge only checks PageHead now. Signed-off-by: Miaohe Lin --- mm/migrate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/migrate.c b/mm/migrate.c index 26943bd819e8..15cac2dabc93 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1560,7 +1560,7 @@ struct page *alloc_migration_target(struct page *page, unsigned long private) new_page = __alloc_pages(gfp_mask, order, nid, mtc->nmask); - if (new_page && PageTransHuge(new_page)) + if (new_page && PageTransHuge(page)) prep_transhuge_page(new_page); return new_page; -- 2.23.0