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=-8.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT 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 63B3CC43387 for ; Mon, 17 Dec 2018 20:22:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 33760206A2 for ; Mon, 17 Dec 2018 20:22:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="YSZkZtXB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389537AbeLQUWU (ORCPT ); Mon, 17 Dec 2018 15:22:20 -0500 Received: from mail-pf1-f194.google.com ([209.85.210.194]:38084 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727631AbeLQUWT (ORCPT ); Mon, 17 Dec 2018 15:22:19 -0500 Received: by mail-pf1-f194.google.com with SMTP id q1so6919772pfi.5 for ; Mon, 17 Dec 2018 12:22:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :user-agent; bh=w2N1lFnP7lwgyibZCv3zxC5CB8Y6AOTQeCb4v428osI=; b=YSZkZtXBTHutf0Vc6xE9hpWLdTQiV0LBpPh7E+tGHV4rn+ag0zPdwRG7EhkmCvu5/6 yTflbIXQRwtDKRjaheKdvZczHREL9dDm0/E0PPXryDAWVQ1dDjNVkODJXONGFs+RsHmZ 9HNE6lVp8ggq9J6oHg936hoELYz6z8wtqRf81Vvy/bMDI8ExoKDF7l1o68npz7cPk2Sy YC9Ch92Pwljml8KoQEwsMqimggKvRDSIjrVepRbxWARIW1NHzU1UMUrU/n5ktuoTHkdV BQryqdLvLjclBgcR19werYAe9q9hfgE3vV0axOgnsZFNEWZaRjI5QsFda/Y7dZWG1030 9uvA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=w2N1lFnP7lwgyibZCv3zxC5CB8Y6AOTQeCb4v428osI=; b=rpFgzLUceXML6Xnjqm/VP2JDSOc3Qj8TdW0l5o0tEQAPgIaMRhgoa/Ujki95RqmK4h 99vVtzs4P2L7eL21BorpbsEAu75LcLBXwNeQs9y79h0bcPgk5I+eP0BdFUI8AzzMVWoJ v8i3sP/KrrrdZheVsKzKHW6s5IzjFBlAjA3jSqtY1kYc4KjFzTVSCc25Fs5hj4Gfzdhl USlcby8vKrXR7QcMPq+o9PCmaQnFAeLRd13k8L1iAurzt/jWL3S7RfPUjewPIQqAYGX3 eT5WqYxDmwKmpUpu5AU09mPNgFMoFl93AeCcQ8+9DV71xrGiIFNTyyQ+/1Xtg236MXcg N6yQ== X-Gm-Message-State: AA+aEWaHXaiohvQMD/6s8Fj9gfxN0KI+POBFAMhqg9JCZ/K2WbAEg16e m9MpNb6V5jaZIBQqjoJnAZc= X-Google-Smtp-Source: AFSGD/X+TrNR9f9V81XBDJgY79N2l38Sd7IjU/SS/fpnE4vfFVwlgbpFPPLma7Xyy+Ak6jm6z2ZBzw== X-Received: by 2002:a63:62c4:: with SMTP id w187mr9217308pgb.230.1545078139265; Mon, 17 Dec 2018 12:22:19 -0800 (PST) Received: from jordon-HP-15-Notebook-PC ([103.227.98.208]) by smtp.gmail.com with ESMTPSA id h79sm24507341pfj.186.2018.12.17.12.22.17 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 17 Dec 2018 12:22:18 -0800 (PST) Date: Tue, 18 Dec 2018 01:56:11 +0530 From: Souptick Joarder To: akpm@linux-foundation.org, willy@infradead.org, mhocko@suse.com, boris.ostrovsky@oracle.com, jgross@suse.com Cc: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v4 8/9] xen/gntdev.c: Convert to use vm_insert_range Message-ID: <20181217202611.GA18060@jordon-HP-15-Notebook-PC> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Convert to use vm_insert_range() to map range of kernel memory to user vma. Signed-off-by: Souptick Joarder Reviewed-by: Matthew Wilcox Reviewed-by: Boris Ostrovsky --- drivers/xen/gntdev.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c index b0b02a5..430d4cb 100644 --- a/drivers/xen/gntdev.c +++ b/drivers/xen/gntdev.c @@ -1084,7 +1084,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma) int index = vma->vm_pgoff; int count = vma_pages(vma); struct gntdev_grant_map *map; - int i, err = -EINVAL; + int err = -EINVAL; if ((vma->vm_flags & VM_WRITE) && !(vma->vm_flags & VM_SHARED)) return -EINVAL; @@ -1145,12 +1145,9 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma) goto out_put_map; if (!use_ptemod) { - for (i = 0; i < count; i++) { - err = vm_insert_page(vma, vma->vm_start + i*PAGE_SIZE, - map->pages[i]); - if (err) - goto out_put_map; - } + err = vm_insert_range(vma, vma->vm_start, map->pages, count); + if (err) + goto out_put_map; } else { #ifdef CONFIG_X86 /* -- 1.9.1