From patchwork Mon Dec 24 13:18:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souptick Joarder X-Patchwork-Id: 10742245 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 B921C13B5 for ; Mon, 24 Dec 2018 13:15:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A3FE528AAF for ; Mon, 24 Dec 2018 13:15:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 92B1D28AD4; Mon, 24 Dec 2018 13:15:07 +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 A380528AAF for ; Mon, 24 Dec 2018 13:15:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725554AbeLXNOt (ORCPT ); Mon, 24 Dec 2018 08:14:49 -0500 Received: from mail-pf1-f193.google.com ([209.85.210.193]:44638 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725385AbeLXNOt (ORCPT ); Mon, 24 Dec 2018 08:14:49 -0500 Received: by mail-pf1-f193.google.com with SMTP id u6so5788877pfh.11; Mon, 24 Dec 2018 05:14:48 -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=6TaUtlS7TeG92dcvMBbOIZkMmLyB09aVGWNeeSIZ3pY=; b=d3Xd7MolqeTIJQoUjbD+4dweIgr48eZCrq7SBO35pR2Fitu8erEje+Llq96kKgTaNn XPfL1CGWAPc7da/LB62zDpZpORWDHnIR2BjFHRYQyp/+KXF3M0iEvByaht2KpWbLTUSF V5VIWYbIwhP1dfjMui59FMP3G4zVM2NSpfC3wkJA8wA1dfEWXoaUbndmy158JAQbEGV7 1LyOQUqQV9Fgk9ZJ2ZCooYItc9QCHKk8jFkB0A+5yNHmPj3XbGdD3KOM6XxI3ib20uxc huNf3L3JPnlFZI3UEuFbedEqb1+lenfo3/eTH4iLnBykOZCUZ8fzgmdmLqU+O3hztuVF QY/w== 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=6TaUtlS7TeG92dcvMBbOIZkMmLyB09aVGWNeeSIZ3pY=; b=t+Awcz06KBLHFtabLH2mR1xmgfHUJSu8EeKij9A3hs/o5PXsVxImL6dN1aBvY3XnC6 l3jblfMStRaGmLYu0+8KerJL2Vd5+oyaowiGXRQ6auVMMfgzn+1XSyJyJ2xsecffXKo1 evDt51ULAGkzF7H6v28zqz8Q899SrdsTOKFttXcxu4WlAFOw0l92zQI+QNpto1FFsB6d JE15oOGttZILtUEr2Wic86Bip3CzbXFPAQb2jxKLQI3mb/O5mhnP6Jb4ujvGDEr4BfiT 0RMWLnVR8f+le8wVD2rhIEI/5MIKZH9ebXPLbH9K1E4F3pPTqO+jQiVLMgup7gZ0e2+v icWw== X-Gm-Message-State: AJcUukcBh4/uYiC2URXcJ5v8I4/pKD2dcrao5ebTGeqjD7OWmxPu/V2i g5xKFMavSuk+WcRB1sb66d0Ww7TL X-Google-Smtp-Source: ALg8bN7YE+bPCsEF6zRIwsShrpUAZIueHQ2KAFb4fOzxweLzlSCbHbZrB8/PRrputEX6DLtFQp2qqA== X-Received: by 2002:a63:e40c:: with SMTP id a12mr12404213pgi.28.1545657287533; Mon, 24 Dec 2018 05:14:47 -0800 (PST) Received: from jordon-HP-15-Notebook-PC ([106.51.18.181]) by smtp.gmail.com with ESMTPSA id q1sm49507262pgs.14.2018.12.24.05.14.44 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 24 Dec 2018 05:14:46 -0800 (PST) Date: Mon, 24 Dec 2018 18:48:41 +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 v5 0/9] Use vm_insert_range Message-ID: <20181224131841.GA22017@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 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 v3 -> v4: Address review comments. In mm/memory.c. Added error check. In arch/arm/mm/dma-mapping.c, remove part of error check as the similar is checked inside vm_insert_range. In rockchip/rockchip_drm_gem.c, vma->vm_pgoff is respected as this might be passed as non zero value considering partial mapping of large buffer. In iommu/dma-iommu.c, count is modifed as (count - vma->vm_pgoff) to handle partial mapping scenario in v2. v4 -> v5: Address review comment on [2/9] and [4/9] In arch/arm/mm/dma-mapping.c, added the error check which was removed in v4, as without those error check we might end up overrun the page array. In rockchip/rockchip_drm_gem.c, added error check which was removed in v1, as without this it might overrun page array. Adjusted page_count parameter before passing it to vm_insert_range(). 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 | 18 ++++------ drivers/firewire/core-iso.c | 15 ++------- drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 14 ++------ 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 | 41 +++++++++++++++++++++++ mm/nommu.c | 7 ++++ 11 files changed, 83 insertions(+), 89 deletions(-)