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=-9.5 required=3.0 tests=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham 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 C016DCA9EB6 for ; Wed, 23 Oct 2019 13:55:18 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 952AB2173B for ; Wed, 23 Oct 2019 13:55:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 952AB2173B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=126.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2FA846B0005; Wed, 23 Oct 2019 09:55:18 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 2A9BC6B0006; Wed, 23 Oct 2019 09:55:18 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1E6FA6B0007; Wed, 23 Oct 2019 09:55:18 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id F197B6B0005 for ; Wed, 23 Oct 2019 09:55:17 -0400 (EDT) Received: from smtpin07.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id 9A22F180AD811 for ; Wed, 23 Oct 2019 13:55:17 +0000 (UTC) X-FDA: 76075196274.07.scale90_8559026459e3e X-HE-Tag: scale90_8559026459e3e X-Filterd-Recvd-Size: 2069 Received: from out28-74.mail.aliyun.com (out28-74.mail.aliyun.com [115.124.28.74]) by imf36.hostedemail.com (Postfix) with ESMTP for ; Wed, 23 Oct 2019 13:55:16 +0000 (UTC) X-Alimail-AntiSpam:AC=CONTINUE;BC=0.1084395|-1;CH=green;DM=CONTINUE|CONTINUE|true|0.434615-0.0129558-0.552429;FP=0|0|0|0|0|-1|-1|-1;HT=e02c03312;MF=liu.xiang@zlingsmart.com;NM=1;PH=DS;RN=3;RT=3;SR=0;TI=SMTPD_---.FpNUs9Y_1571838908; Received: from localhost(mailfrom:liu.xiang@zlingsmart.com fp:SMTPD_---.FpNUs9Y_1571838908) by smtp.aliyun-inc.com(10.194.97.246); Wed, 23 Oct 2019 21:55:09 +0800 From: Liu Xiang To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, liuxiang_1999@126.com Subject: [PATCH] mm: gup: fix comment of __get_user_pages() Date: Wed, 23 Oct 2019 21:51:47 +0800 Message-Id: <1571838707-4994-1-git-send-email-liuxiang_1999@126.com> X-Mailer: git-send-email 1.9.1 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: Because nr_pages is unsigned long, it can not be negative. Signed-off-by: Liu Xiang --- mm/gup.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/mm/gup.c b/mm/gup.c index 8f236a3..0236954 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -735,10 +735,10 @@ static int check_vma_flags(struct vm_area_struct *vma, unsigned long gup_flags) * @nonblocking: whether waiting for disk IO or mmap_sem contention * * Returns number of pages pinned. This may be fewer than the number - * requested. If nr_pages is 0 or negative, returns 0. If no pages - * were pinned, returns -errno. Each page returned must be released - * with a put_page() call when it is finished with. vmas will only - * remain valid while mmap_sem is held. + * requested. If nr_pages is 0, returns 0. If no pages were pinned, + * returns -errno. Each page returned must be released with a + * put_page() call when it is finished with. vmas will only remain + * valid while mmap_sem is held. * * Must be called with mmap_sem held. It may be released. See below. * -- 1.9.1