From nobody Wed Dec 31 04:37:18 2025 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 5DD28C4167B for ; Mon, 13 Nov 2023 15:22:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231603AbjKMPWk (ORCPT ); Mon, 13 Nov 2023 10:22:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46904 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231218AbjKMPWe (ORCPT ); Mon, 13 Nov 2023 10:22:34 -0500 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6F1EED69 for ; Mon, 13 Nov 2023 07:22:31 -0800 (PST) Received: from dggpemm100001.china.huawei.com (unknown [172.30.72.53]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4STY4J2R6pz1P88S; Mon, 13 Nov 2023 23:19:12 +0800 (CST) Received: from localhost.localdomain (10.175.112.125) by dggpemm100001.china.huawei.com (7.185.36.93) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Mon, 13 Nov 2023 23:22:29 +0800 From: Kefeng Wang To: Andrew Morton CC: , , Matthew Wilcox , David Hildenbrand , Sidhartha Kumar , Kefeng Wang Subject: [PATCH v2 2/6] mm: memory: use a folio in validate_page_before_insert() Date: Mon, 13 Nov 2023 23:22:18 +0800 Message-ID: <20231113152222.3495908-3-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20231113152222.3495908-1-wangkefeng.wang@huawei.com> References: <20231113152222.3495908-1-wangkefeng.wang@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggpemm100001.china.huawei.com (7.185.36.93) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Use a folio in validate_page_before_insert() to save two compound_head() calls. Reviewed-by: Sidhartha Kumar Signed-off-by: Kefeng Wang Reviewed-by: Vishal Moola (Oracle) --- mm/memory.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/mm/memory.c b/mm/memory.c index c32954e16b28..379354b35891 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1841,9 +1841,12 @@ pte_t *__get_locked_pte(struct mm_struct *mm, unsign= ed long addr, =20 static int validate_page_before_insert(struct page *page) { - if (PageAnon(page) || PageSlab(page) || page_has_type(page)) + struct folio *folio =3D page_folio(page); + + if (folio_test_anon(folio) || folio_test_slab(folio) || + page_has_type(page)) return -EINVAL; - flush_dcache_page(page); + flush_dcache_folio(folio); return 0; } =20 --=20 2.27.0