From nobody Tue Jun 23 03:13:25 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 239C4C433F5 for ; Fri, 11 Mar 2022 08:28:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232297AbiCKI33 (ORCPT ); Fri, 11 Mar 2022 03:29:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43896 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229506AbiCKI30 (ORCPT ); Fri, 11 Mar 2022 03:29:26 -0500 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D23E1109A40 for ; Fri, 11 Mar 2022 00:28:23 -0800 (PST) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.54]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4KFJq65lFLz1GCKj; Fri, 11 Mar 2022 16:23:30 +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, 11 Mar 2022 16:28:21 +0800 From: Miaohe Lin To: CC: , , Subject: [PATCH] mm/madvise: Use vma_lookup() instead of find_vma() Date: Fri, 11 Mar 2022 16:27:31 +0800 Message-ID: <20220311082731.63513-1-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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 Content-Type: text/plain; charset="utf-8" Using vma_lookup() verifies the start address is contained in the found vma. This results in easier to read the code. Signed-off-by: Miaohe Lin Reviewed-by: David Hildenbrand --- mm/madvise.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/madvise.c b/mm/madvise.c index 5b6d796e55de..afd68bfc77d4 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -883,8 +883,8 @@ static long madvise_populate(struct vm_area_struct *vma, * our VMA might have been split. */ if (!vma || start >=3D vma->vm_end) { - vma =3D find_vma(mm, start); - if (!vma || start < vma->vm_start) + vma =3D vma_lookup(mm, start); + if (!vma) return -ENOMEM; } =20 --=20 2.23.0