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 8798FC433FE for ; Sat, 12 Mar 2022 08:32:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231417AbiCLIdS (ORCPT ); Sat, 12 Mar 2022 03:33:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229952AbiCLIdQ (ORCPT ); Sat, 12 Mar 2022 03:33:16 -0500 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8F66A2364FD for ; Sat, 12 Mar 2022 00:32:11 -0800 (PST) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4KFws10KKhzcZxn; Sat, 12 Mar 2022 16:27:17 +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; Sat, 12 Mar 2022 16:32:09 +0800 From: Miaohe Lin To: CC: , , Subject: [PATCH] mm/mremap:: Use vma_lookup() instead of find_vma() Date: Sat, 12 Mar 2022 16:31:18 +0800 Message-ID: <20220312083118.48284-1-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) 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 Using vma_lookup() verifies the address is contained in the found vma. This results in easier to read the code. Signed-off-by: Miaohe Lin --- mm/mremap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/mremap.c b/mm/mremap.c index 002eec83e91e..9d76da79594d 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -942,8 +942,8 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len, if (mmap_write_lock_killable(current->mm)) return -EINTR; - vma = find_vma(mm, addr); - if (!vma || vma->vm_start > addr) { + vma = vma_lookup(mm, addr); + if (!vma) { ret = EFAULT; goto out; } -- 2.23.0