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=-8.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 9691CC4BA18 for ; Wed, 26 Feb 2020 17:42:20 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 715CD20801 for ; Wed, 26 Feb 2020 17:42:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 715CD20801 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 285906B0005; Wed, 26 Feb 2020 12:42:20 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 236196B0008; Wed, 26 Feb 2020 12:42:20 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 124676B000A; Wed, 26 Feb 2020 12:42:20 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0145.hostedemail.com [216.40.44.145]) by kanga.kvack.org (Postfix) with ESMTP id EBD9D6B0005 for ; Wed, 26 Feb 2020 12:42:19 -0500 (EST) Received: from smtpin26.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id C61E8441A for ; Wed, 26 Feb 2020 17:42:19 +0000 (UTC) X-FDA: 76532997240.26.beast54_88bfc6a6efc5b X-HE-Tag: beast54_88bfc6a6efc5b X-Filterd-Recvd-Size: 2185 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf48.hostedemail.com (Postfix) with ESMTP for ; Wed, 26 Feb 2020 17:42:19 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id DA889AE85; Wed, 26 Feb 2020 17:42:17 +0000 (UTC) Subject: Re: [PATCH V2 4/4] mm/vma: Replace all remaining open encodings with vma_is_anonymous() To: Anshuman Khandual , linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Andrew Morton References: <1582520593-30704-1-git-send-email-anshuman.khandual@arm.com> <1582520593-30704-5-git-send-email-anshuman.khandual@arm.com> From: Vlastimil Babka Message-ID: Date: Wed, 26 Feb 2020 18:42:17 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <1582520593-30704-5-git-send-email-anshuman.khandual@arm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit 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: On 2/24/20 6:03 AM, Anshuman Khandual wrote: > This replaces all remaining open encodings with vma_is_anonymous(). > > Cc: Andrew Morton > Cc: linux-mm@kvack.org > Cc: linux-kernel@vger.kernel.org > Signed-off-by: Anshuman Khandual Acked-by: Vlastimil Babka --- > mm/gup.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/mm/gup.c b/mm/gup.c > index c8ffe2e61f03..58c8cbfeded6 100644 > --- a/mm/gup.c > +++ b/mm/gup.c > @@ -146,7 +146,8 @@ static struct page *no_page_table(struct vm_area_struct *vma, > * But we can only make this optimization where a hole would surely > * be zero-filled if handle_mm_fault() actually did handle it. > */ > - if ((flags & FOLL_DUMP) && (!vma->vm_ops || !vma->vm_ops->fault)) > + if ((flags & FOLL_DUMP) && > + (vma_is_anonymous(vma) || !vma->vm_ops->fault)) > return ERR_PTR(-EFAULT); > return NULL; > } >