From patchwork Thu Mar 9 13:57:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Muhammad Usama Anjum X-Patchwork-Id: 661317 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 200CCC61DA4 for ; Thu, 9 Mar 2023 14:01:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230391AbjCIOA7 (ORCPT ); Thu, 9 Mar 2023 09:00:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230448AbjCIOAH (ORCPT ); Thu, 9 Mar 2023 09:00:07 -0500 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 67D89F28AF; Thu, 9 Mar 2023 05:57:51 -0800 (PST) Received: from localhost.localdomain (unknown [39.45.145.7]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: usama.anjum) by madras.collabora.co.uk (Postfix) with ESMTPSA id A8945660304F; Thu, 9 Mar 2023 13:57:43 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1678370270; bh=9oFwL3f6YkfzcALLDj4AoV5PtSOwgfu6T9QXZoMtKjI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BHJXZ9aklc385OAP63KNxa4u90d+4zhFaDd0ssuVCleaV3TR2OCZtOcf5YQhpQ5vp qhDVbdJiT0XCCOObbEdnJbrpOR7lENU5O97hDcH71ZOsws/FCLYghPKrukK6xrYEBy xSp/XwmoKYHwntSWtW+Sn+UBDUN6DiLoJ25UXbkuYB1urxqDhctrLTdgoHzHQzczzd NYMuOYjcvkU8x6J1nwzGhxfOV1fR9qfdaJhiPOfyHM13xnbjMD3Rm0gdojiF7BJqpe VZ8DL/Jsw80n47fKZbxKnITBB3P9alebvmgAOWjA9Y3uR1O4Vz4KzuXqbcSUpZnD34 fG8C27zfuo8jw== From: Muhammad Usama Anjum To: Peter Xu , David Hildenbrand , Andrew Morton , =?utf-8?b?TWljaGHFgiBNaXJvc8WC?= =?utf-8?b?YXc=?= , Andrei Vagin , Danylo Mocherniuk , Paul Gofman , Cyrill Gorcunov , Mike Rapoport , Nadav Amit Cc: Alexander Viro , Shuah Khan , Christian Brauner , Yang Shi , Vlastimil Babka , "Liam R . Howlett" , Yun Zhou , Suren Baghdasaryan , Alex Sierra , Muhammad Usama Anjum , Matthew Wilcox , Pasha Tatashin , Axel Rasmussen , "Gustavo A . R . Silva" , Dan Williams , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, Greg KH , kernel@collabora.com Subject: [PATCH v11 2/7] userfaultfd: Define dummy uffd_wp_range() Date: Thu, 9 Mar 2023 18:57:13 +0500 Message-Id: <20230309135718.1490461-3-usama.anjum@collabora.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230309135718.1490461-1-usama.anjum@collabora.com> References: <20230309135718.1490461-1-usama.anjum@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Define uffd_wp_range() for the cases when CONFIG_USERFAULTFD isn't set. Signed-off-by: Muhammad Usama Anjum --- include/linux/userfaultfd_k.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/userfaultfd_k.h b/include/linux/userfaultfd_k.h index b680c0ec8b85..fd1a1ecdb5f6 100644 --- a/include/linux/userfaultfd_k.h +++ b/include/linux/userfaultfd_k.h @@ -182,6 +182,14 @@ extern int userfaultfd_wp_async(struct vm_area_struct *vma); #else /* CONFIG_USERFAULTFD */ +extern inline long uffd_wp_range(struct mm_struct *dst_mm, + struct vm_area_struct *vma, + unsigned long start, unsigned long len, + bool enable_wp) +{ + return 0; +} + /* mm helpers */ static inline vm_fault_t handle_userfault(struct vm_fault *vmf, unsigned long reason)