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=-8.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 87ED0C3F68F for ; Tue, 17 Dec 2019 13:59:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5F505218AC for ; Tue, 17 Dec 2019 13:59:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="GbGZzaEh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728756AbfLQN7v (ORCPT ); Tue, 17 Dec 2019 08:59:51 -0500 Received: from hqnvemgate26.nvidia.com ([216.228.121.65]:15008 "EHLO hqnvemgate26.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728539AbfLQN7u (ORCPT ); Tue, 17 Dec 2019 08:59:50 -0500 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate26.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Tue, 17 Dec 2019 05:59:40 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Tue, 17 Dec 2019 05:59:49 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Tue, 17 Dec 2019 05:59:49 -0800 Received: from [10.2.165.11] (10.124.1.5) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 17 Dec 2019 13:59:48 +0000 Subject: Re: [RFC PATCH] mm/gup: try_pin_compound_head() can be static To: kbuild test robot CC: , Andrew Morton , Al Viro , Alex Williamson , Benjamin Herrenschmidt , =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= , Christoph Hellwig , Dan Williams , Daniel Vetter , Dave Chinner , David Airlie , "David S . Miller" , Ira Weiny , Jan Kara , Jason Gunthorpe , Jens Axboe , Jonathan Corbet , =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= , Magnus Karlsson , Mauro Carvalho Chehab , Michael Ellerman , Michal Hocko , Mike Kravetz , Paul Mackerras , Shuah Khan , Vlastimil Babka , , , , , , , , , , , , , LKML , "Kirill A . Shutemov" References: <20191211025318.457113-24-jhubbard@nvidia.com> <20191217080358.q3k57ta62txvip5h@4978f4969bb8> From: John Hubbard X-Nvconfidentiality: public Message-ID: <7828a101-e422-8e2a-ef9b-9c0285065ed5@nvidia.com> Date: Tue, 17 Dec 2019 05:56:56 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.3.0 MIME-Version: 1.0 In-Reply-To: <20191217080358.q3k57ta62txvip5h@4978f4969bb8> X-Originating-IP: [10.124.1.5] X-ClientProxiedBy: HQMAIL105.nvidia.com (172.20.187.12) To HQMAIL107.nvidia.com (172.20.187.13) Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1576591180; bh=+kY6WrbKA7lSfaR6JiJsMhpW0kY3DW4edAlAk5Ve1Ws=; h=X-PGP-Universal:Subject:To:CC:References:From:X-Nvconfidentiality: Message-ID:Date:User-Agent:MIME-Version:In-Reply-To: X-Originating-IP:X-ClientProxiedBy:Content-Type:Content-Language: Content-Transfer-Encoding; b=GbGZzaEh7giluV7bpN/IIAOj3Mc18AXcjLeuEGsTgM8/schRNFGUqCq00YAc4ARRK 0PVe1s7+qdvFmh1Ttru614AJtLodM6wJzZ2UNnA1jIm2+JCvQssDVh7rwrwji91hSp Dmomrx8a2mkRdKDi+zuehTjS+cK+ceZUGuV2qS+Q00TgS6unnj2J/spZ+jPwNEGl3X xJTAKof+O0alRzDH3cC7VTlXjNJwIWhcBZya8mbb62MvfcrAHYE78VekfobHefcZXx ueLyg5p/jxUNWHBbbcLlFxuQBAi3TiHxhM/GsO23RipjSLUTZwruxA+61/WfeUhUby xcvllM2I0K27A== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/17/19 12:03 AM, kbuild test robot wrote: > > Fixes: 8086d1c61970 ("mm/gup: track FOLL_PIN pages") > Signed-off-by: kbuild test robot > --- > gup.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/mm/gup.c b/mm/gup.c > index 038b71165a761..849a6f55938e6 100644 > --- a/mm/gup.c > +++ b/mm/gup.c > @@ -75,7 +75,7 @@ static inline struct page *try_get_compound_head(struct page *page, int refs) > * @Return: the compound head page, with ref appropriately incremented, > * or NULL upon failure. > */ > -__must_check struct page *try_pin_compound_head(struct page *page, int refs) > +static __must_check struct page *try_pin_compound_head(struct page *page, int refs) > { > struct page *head = try_get_compound_head(page, > GUP_PIN_COUNTING_BIAS * refs); > Yes, it should have been declared static. And this also applies to the latest version (v11). The preferred fix would stay within 80 columns, like this: diff --git a/mm/gup.c b/mm/gup.c index c2793a86450e..39b2f683bd2e 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -75,7 +75,8 @@ static inline struct page *try_get_compound_head(struct page *page, int refs) * @Return: the compound head page, with ref appropriately incremented, * or NULL upon failure. */ -__must_check struct page *try_pin_compound_head(struct page *page, int refs) +static __must_check struct page *try_pin_compound_head(struct page *page, + int refs) { struct page *head = try_get_compound_head(page, GUP_PIN_COUNTING_BIAS * refs); thanks, -- John Hubbard NVIDIA