From patchwork Thu Dec 6 18:37:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souptick Joarder X-Patchwork-Id: 10716595 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 57B8E15A6 for ; Thu, 6 Dec 2018 18:33:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 48C862A146 for ; Thu, 6 Dec 2018 18:33:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3C3C02A320; Thu, 6 Dec 2018 18:33:56 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E19762A146 for ; Thu, 6 Dec 2018 18:33:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725948AbeLFSdu (ORCPT ); Thu, 6 Dec 2018 13:33:50 -0500 Received: from mail-pl1-f195.google.com ([209.85.214.195]:36055 "EHLO mail-pl1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725901AbeLFSdt (ORCPT ); Thu, 6 Dec 2018 13:33:49 -0500 Received: by mail-pl1-f195.google.com with SMTP id g9so559775plo.3; Thu, 06 Dec 2018 10:33:49 -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=//xM5ckHQpjH8DRY7QjxQr9OahBeTL/2OYhSA/2ZlVM=; b=davkmg1rht5+CKYgw8LgltjJ8cvgRpcvOtjPkNdysxNTmHbV7OvchtIoVQymYDgKTz ZQuAz513k8SnYKXR4Bd3jxCfrxiBLQFcHMpmTADwHEyZ5v3h6mKWIWpro9HOf/FhdhIO pq4A04jwaORyVvTOXpgO/5jxEBR/QNHfHJo38BYfiMw+CuQvRyUdois//LrihhvKbkUC IwbNje16unuPJk5Iy+JnYzEmgRIP3vzqLH+2EBbhZYK0rPgXANen8CrSLHkgl2GabRvE JWEntG18tba6aGPTFpcj4sfRCohVeAKRRalaqTEow7MOE778mEZF+co4fXCA/Ie1LAH4 m62w== 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=//xM5ckHQpjH8DRY7QjxQr9OahBeTL/2OYhSA/2ZlVM=; b=j2Qp3kzQ0YAoXCaR/jrD7cOzQwfYI0v4NVG1wSf8ZCJ5xhK5mwYr7iD3wOZIoh5uQy ocuOXIblvxDVq/UDSRMkQo8YxzHDbG1EaMNdT0XDECq5OLl8bkkRQF4cFD5bWr4tfOD8 uz6eI1Yndg0XT75JxlhFk3uPGbM7JKQsJm5NDcBOANPWiP3Uot4A2LMRipSk16MOnz3f NrfVL8eBnEBs2TJCf6uZcs6NcRfmIFPNgxiNk2ADhSfQh4CHpxbNzL302HPNyptnzAVm 0WgemSnJHMHjeF4qaekzZVhGafrjozMTEQrKJTuv4M0xoCSlFAIIXjTeoIAECdPauULe zXxQ== X-Gm-Message-State: AA+aEWYFUt+/eN1W2MQXlPkotWRsneVra0W1VcTSqhuRSBJCPPv9n3oB fz50C4igHmj8UNXAtG98d9R4b7Ms X-Google-Smtp-Source: AFSGD/WNnGiapTEJ46Ed5/Z/wawNX1AN/JF1DLHSpN0c5ocfxsOQRaK395FOtJYxrGm5y2+oYNYISQ== X-Received: by 2002:a17:902:e10a:: with SMTP id cc10mr14834670plb.165.1544121228581; Thu, 06 Dec 2018 10:33:48 -0800 (PST) Received: from jordon-HP-15-Notebook-PC ([103.227.99.39]) by smtp.gmail.com with ESMTPSA id g65sm5281319pfa.63.2018.12.06.10.33.45 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 06 Dec 2018 10:33:46 -0800 (PST) Date: Fri, 7 Dec 2018 00:07:33 +0530 From: Souptick Joarder To: akpm@linux-foundation.org, willy@infradead.org, mhocko@suse.com, kirill.shutemov@linux.intel.com, vbabka@suse.cz, riel@surriel.com, sfr@canb.auug.org.au, rppt@linux.vnet.ibm.com, peterz@infradead.org, linux@armlinux.org.uk, robin.murphy@arm.com, iamjoonsoo.kim@lge.com, treding@nvidia.com, keescook@chromium.org, m.szyprowski@samsung.com, stefanr@s5r6.in-berlin.de, hjc@rock-chips.com, heiko@sntech.de, airlied@linux.ie, oleksandr_andrushchenko@epam.com, joro@8bytes.org, pawel@osciak.com, kyungmin.park@samsung.com, mchehab@kernel.org, boris.ostrovsky@oracle.com, jgross@suse.com Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux1394-devel@lists.sourceforge.net, dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, xen-devel@lists.xen.org, iommu@lists.linux-foundation.org, linux-media@vger.kernel.org Subject: [PATCH v3 0/9] Use vm_insert_range Message-ID: <20181206183733.GA17240@jordon-HP-15-Notebook-PC> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Previouly drivers have their own way of mapping range of kernel pages/memory into user vma and this was done by invoking vm_insert_page() within a loop. As this pattern is common across different drivers, it can be generalized by creating a new function and use it across the drivers. vm_insert_range is the new API which will be used to map a range of kernel memory/pages to user vma. All the applicable places are converted to use new vm_insert_range in this patch series. v1 -> v2: Address review comment on mm/memory.c. Add EXPORT_SYMBOL for vm_insert_range and corrected the documentation part for this API. In drivers/gpu/drm/xen/xen_drm_front_gem.c, replace err with ret as suggested. In drivers/iommu/dma-iommu.c, handle the scenario of partial mmap() of large buffer by passing *pages + vma->vm_pgoff* to vm_insert_range(). v2 -> v3: Declaration of vm_insert_range() moved to include/linux/mm.h Souptick Joarder (9): mm: Introduce new vm_insert_range API arch/arm/mm/dma-mapping.c: Convert to use vm_insert_range drivers/firewire/core-iso.c: Convert to use vm_insert_range drm/rockchip/rockchip_drm_gem.c: Convert to use vm_insert_range drm/xen/xen_drm_front_gem.c: Convert to use vm_insert_range iommu/dma-iommu.c: Convert to use vm_insert_range videobuf2/videobuf2-dma-sg.c: Convert to use vm_insert_range xen/gntdev.c: Convert to use vm_insert_range xen/privcmd-buf.c: Convert to use vm_insert_range arch/arm/mm/dma-mapping.c | 21 +++++-------- drivers/firewire/core-iso.c | 15 ++------- drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 20 ++---------- drivers/gpu/drm/xen/xen_drm_front_gem.c | 20 ++++-------- drivers/iommu/dma-iommu.c | 13 ++------ drivers/media/common/videobuf2/videobuf2-dma-sg.c | 23 +++++--------- drivers/xen/gntdev.c | 11 +++---- drivers/xen/privcmd-buf.c | 8 ++--- include/linux/mm.h | 2 ++ mm/memory.c | 38 +++++++++++++++++++++++ mm/nommu.c | 7 +++++ 11 files changed, 80 insertions(+), 98 deletions(-)