From patchwork Sun Dec 1 01:57:46 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 11268465 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9D10C17E0 for ; Sun, 1 Dec 2019 01:57:49 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 6AA2F208C3 for ; Sun, 1 Dec 2019 01:57:49 +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 6AA2F208C3 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) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 5CBC06B0386; Sat, 30 Nov 2019 20:57:48 -0500 (EST) X-Original-To: int-list-linux-mm@kvack.org 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-Original-To: linux-mm@kvack.org 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-Spam-Summary: 2,0,0,d45c8555d450cbe5,d41d8cd98f00b204,akpm@linux-foundation.org,:akpm@linux-foundation.org::mm-commits@vger.kernel.org:richardw.yang@linux.intel.com:torvalds@linux-foundation.org,RULES_HIT:41:355:379:800:960:967:973:988:989:1260:1263:1345:1381:1431:1437:1534:1540:1711:1714:1730:1747:1777:1792:2393:2525:2559:2563:2682:2685:2859:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3351:3867:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4321:5007:6261:6642:6653:7576:8599:9025:9545:10004:10913:11026:11658:11914:12043:12048:12297:12438:12517:12519:12555:12663:12679:12783:12986:13069:13311:13357:14181:14384:14721:14849:21080:21451:21627:21939:30054:30070,0,RBL:198.145.29.99:@linux-foundation.org:.lbl8.mailshell.net-62.2.0.100 64.100.201.201,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:25,LUA_SUMMARY:none 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)