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 X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F3FD4C432C0 for ; Sun, 1 Dec 2019 01:57:48 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id AFCC6208C3 for ; Sun, 1 Dec 2019 01:57:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="RRXkFsFe" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AFCC6208C3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 61C9F6B0384; Sat, 30 Nov 2019 20:57:48 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 5CBC06B0386; Sat, 30 Nov 2019 20:57:48 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4BC3A6B0387; Sat, 30 Nov 2019 20:57:48 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0199.hostedemail.com [216.40.44.199]) by kanga.kvack.org (Postfix) with ESMTP id 2D10C6B0384 for ; Sat, 30 Nov 2019 20:57:48 -0500 (EST) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id D2E5F180AD817 for ; Sun, 1 Dec 2019 01:57:47 +0000 (UTC) X-FDA: 76214911374.06.start82_440b3c3a33e42 X-HE-Tag: start82_440b3c3a33e42 X-Filterd-Recvd-Size: 2193 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf43.hostedemail.com (Postfix) with ESMTP for ; Sun, 1 Dec 2019 01:57:47 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A8C50215E5; Sun, 1 Dec 2019 01:57:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575165466; bh=MPhSfNyCJiHCWYvKXZZ/vEXfiImlJSzzZYrO8xIwEPU=; h=Date:From:To:Subject:From; b=RRXkFsFeLk+HrSg+AxHVKucm6BiZYm7WFwMPa0sdEaUv7Bs5zDF9k5Sz9ovAAD30R nDTbyKqp+GKosPmDrVjP3qRpsPnwdCuiHAPgDcKG+MRtp3A20pxWIUovOD39bbEzq4 xCswL93fFR4itNhQijt2QZxMIoVNHiSSRwouwZPc= Date: Sat, 30 Nov 2019 17:57:46 -0800 From: akpm@linux-foundation.org To: akpm@linux-foundation.org, linux-mm@kvack.org, mm-commits@vger.kernel.org, richardw.yang@linux.intel.com, torvalds@linux-foundation.org Subject: [patch 144/158] mm/madvise.c: use PAGE_ALIGN[ED] for range checking Message-ID: <20191201015746.s24EMeDji%akpm@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Wei Yang Subject: mm/madvise.c: use PAGE_ALIGN[ED] for range checking Improve readability, no functional change. Link: http://lkml.kernel.org/r/20191118032857.22683-1-richardw.yang@linux.intel.com Signed-off-by: Wei Yang Reviewed-by: Andrew Morton Signed-off-by: Andrew Morton --- mm/madvise.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/mm/madvise.c~madvise-use-page_align-for-range-checking +++ a/mm/madvise.c @@ -1059,9 +1059,9 @@ SYSCALL_DEFINE3(madvise, unsigned long, if (!madvise_behavior_valid(behavior)) return error; - if (start & ~PAGE_MASK) + if (!PAGE_ALIGNED(start)) return error; - len = (len_in + ~PAGE_MASK) & PAGE_MASK; + len = PAGE_ALIGN(len_in); /* Check to see whether len was rounded up from small -ve to zero */ if (len_in && !len) _