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=-8.5 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,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 B34FBC04EB8 for ; Thu, 6 Dec 2018 18:41:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7B9E820892 for ; Thu, 6 Dec 2018 18:41:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="aenzkpYv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7B9E820892 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726089AbeLFSl1 (ORCPT ); Thu, 6 Dec 2018 13:41:27 -0500 Received: from mail-pf1-f194.google.com ([209.85.210.194]:46250 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725967AbeLFSl0 (ORCPT ); Thu, 6 Dec 2018 13:41:26 -0500 Received: by mail-pf1-f194.google.com with SMTP id c73so579640pfe.13 for ; Thu, 06 Dec 2018 10:41:26 -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=aenzkpYvHUhNUpyXAme2uQ3V/EXrKlnQA8rURBLlOkHsn9tYjl5GkmybdoUD9K2GgN G37Q64LOB4ZKu2sue4xUOhvOeuEmG46SmCpVuZhEdJxR63T/QLdN8rLr9fiWbyuMd5Jm 0HsilvmTtfIBT/QBcUh9o2qEUSfdiW4dKzSGb7XuAMX7eaBz1dzjqwlJG7nEX+iWPemK 664ddgM//PLwH6v9zkkZfemN0CaRbZBPRXhwkc1MiwP+R3wK5e6yJMSGY1t7V9JHgk+t HDi3RGApuONW9gwNprPjlwpSAwnyZqpCDLxFDrvKLH3HIGxqygBp8n2LNJa0o/mP5Ah5 Du4Q== 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=WLuGmH9MdR5wK1NrHdQ0hUUh6anGd6E5WtqI2ciGltCOGzTYA3vc6CVieaYhmkkoHk NgEc7ZQ+fkeg56XZAkYQmbaBvm5dUdU8zZL8qBoaS7XDD1P+VruCxjeA89aVVCoul7OR 6pwP4/QVmJtf1X/JRLFSXP3Ee0F6VGZbxEKerdnbUWcQpkjvx5WRSLpslLxgme+gtwaZ mV16EJ/ttXkvmha3bqzTwtSJtNiamFwI+VMCYQGMevOhS9/qBEYOAJZsNJyBCrXegPHt ouQ6MwNV0gA62tIm5hlI+36LjbggvqUvpu8iZI+UlW0yKjVVSODBsEHIhRhMbL+UTmYK pVbg== X-Gm-Message-State: AA+aEWZFRe5XxJJmirrQiIzSnziMIxWTwZ8uiphQztMZYbzmcWL9gsQN LK4kQSOU/qq+tE5KJ+4o130= X-Google-Smtp-Source: AFSGD/U5qV1ExnFHXQcR9PwlEZvKxNelc+OQM7eEHu1JRTs7JEb8sLXoA+WeSuh+reYXA+2ge8l+Lg== X-Received: by 2002:a63:bc02:: with SMTP id q2mr25260007pge.116.1544121686098; Thu, 06 Dec 2018 10:41:26 -0800 (PST) Received: from jordon-HP-15-Notebook-PC ([103.227.99.39]) by smtp.gmail.com with ESMTPSA id r8sm1220470pgr.48.2018.12.06.10.41.24 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 06 Dec 2018 10:41:25 -0800 (PST) Date: Fri, 7 Dec 2018 00:15:13 +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 v3 8/9] xen/gntdev.c: Convert to use vm_insert_range Message-ID: <20181206184513.GA32415@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