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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0E53FC433FE for ; Mon, 14 Mar 2022 16:38:24 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 29A6D6B0071; Mon, 14 Mar 2022 12:38:24 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 2492C8D0002; Mon, 14 Mar 2022 12:38:24 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0EB128D0001; Mon, 14 Mar 2022 12:38:24 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.a.hostedemail.com [64.99.140.24]) by kanga.kvack.org (Postfix) with ESMTP id F40F76B0071 for ; Mon, 14 Mar 2022 12:38:23 -0400 (EDT) Received: from smtpin06.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id C0F1E61FB1 for ; Mon, 14 Mar 2022 16:38:23 +0000 (UTC) X-FDA: 79243549686.06.6359FE0 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf13.hostedemail.com (Postfix) with ESMTP id 031E82000D for ; Mon, 14 Mar 2022 16:38:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=5XpAIw2yg1CSg6scwFjP4xm5do4IfouW2lVMpcbtSFY=; b=FzvGRTu7naBCARpYFA2lLhYLPY Yrh39A07HVuxla3xbUbmIMG4jywP+TSIQHm1a2CdyLrK300BB9nHBIkyrgHCXZyHesPpkuahWCrqZ daQDDsI71ELlN1dl2Ys7uqxdrH/D/2NQLrduSYIN728FvJcGuUw/yxjqtBlFKes2OADNzd1/HZNAe 31xPLxs57l781DGfFg/yWG2Tc9aARYqSBhW8i1B73uOd5pvsKUnCYPPT8kPIAgY06PwKJXp5SG3Ya yZR9wxc9PA6w4b7z2gtcttfeSJmgyAcnPJ68QOgkJCiF4zwv9w8qCd+jBf7AodyXhWay9Qv1HKOSz 4gk+6zNQ==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nTnNO-004CYa-I6; Mon, 14 Mar 2022 16:16:54 +0000 Date: Mon, 14 Mar 2022 16:16:54 +0000 From: Matthew Wilcox To: Miaohe Lin Cc: akpm@linux-foundation.org, hughd@google.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] mm/mlock: Use vma_lookup() instead of find_vma() Message-ID: References: <20220314151728.20800-1-linmiaohe@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220314151728.20800-1-linmiaohe@huawei.com> X-Rspamd-Queue-Id: 031E82000D X-Rspam-User: Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=FzvGRTu7; spf=none (imf13.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none X-Stat-Signature: 9aw6fgyf4mmnkpcix4t5haedzieerzjd X-Rspamd-Server: rspam07 X-HE-Tag: 1647275902-286057 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000769, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Mar 14, 2022 at 11:17:28PM +0800, Miaohe Lin wrote: > Using vma_lookup() verifies the start is contained in the found vma. This > results in easier to read the code. This conflicts with the maple tree.