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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B5924C433FE for ; Wed, 16 Nov 2022 10:55:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=KaN1UVUocWTK18Jp159sz4bbYUQD+10xyAJK6lhmRxE=; b=SVBqqPPl4nL05M Hg1AsZ7ZgpPCBgBz+95SGRmt5VGkizGt5Uyl/TeWew32tP0ndYtkQdWlj/5CbyMrYXxr5x3snscfx 3lwkCW9JwzbV+Yrxv+BKtZl4uEk+AYwF7A4scQDEuwKIfzM3wpF5zGTKwaNkY3lfVEPVNreaufK2m hlU3mJnGaSV6rTcNBR3Wwlgbeg+bYOMXJzM2RHcou82e6pvURhWGl4b2z87ilveLMgJrfkF1EHtgz 3C7QU5XERQzhwfM+FzVPRTf/bqE52SeJxNT8jeRR8L8+G4x03S9bA+tfodrIQMg27HdX75dW641jX NQ/+QIrM2je3RRnF1K7w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ovG3X-002UaQ-U8; Wed, 16 Nov 2022 10:54:13 +0000 Received: from mail-ed1-x52e.google.com ([2a00:1450:4864:20::52e]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ovG0T-002SSy-GY for linux-arm-kernel@lists.infradead.org; Wed, 16 Nov 2022 10:51:04 +0000 Received: by mail-ed1-x52e.google.com with SMTP id f7so25953307edc.6 for ; Wed, 16 Nov 2022 02:51:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ffwll.ch; s=google; h=in-reply-to:content-disposition:mime-version:references :mail-followup-to:message-id:subject:cc:to:from:date:from:to:cc :subject:date:message-id:reply-to; bh=NMt8HjKxItO2J6bIbRsCvEdSlAZpP8uC48lcisou+nI=; b=eLnGvKK+w1XqLxzowLTo19VxBdUCyRC3jZCwBMpKaUWXXlLi4fs0Axmuul/wRN/I3k Ls2daX/AS8NBqlkGiJqqxb0gEFzgn6n0a6+XnpTDtipAc3J5NayuL7HDBO33beS0D75x K2gRZhVXeM0+lA+7zcbmJS/RVo1YdOeZ/sxms= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references :mail-followup-to:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=NMt8HjKxItO2J6bIbRsCvEdSlAZpP8uC48lcisou+nI=; b=YJRujQxJWRLTI8qgP80pGk+CWthqI1MOf+Zr69QkVcqH7wSCt1VsYUYvZHC1y6hu62 qREUAKALhEUH9jjE+usebkJoQ4nE7Itk1NwzziLSVYwcCA9+tWZ1KHHU8gtFpf3hyfkN KzIqXBOsBNxbVruKnHjAcycsW3yX1Ktmo+luNveyuZ4W7IbfUoq6YWeZbgOy4ja+3syQ 5c5+WonHofIR08vxPXItjGl0g5IGAgKcdr82EhOLG17wyDi1g7+kJmhLnccvyOZuOy2S 05aYKz2cBL8a8UwzpriuQmvmAre0smzj2qWG03DPrIzv01prrAZP2gIsFr1Gon68k8m0 HNVw== X-Gm-Message-State: ANoB5pn6XMWhHJpQAokhikg7eTKohRjr+tjWvfia4NxchwL9rYC02uwK nMjqCFZUC6lwazTJxMTXaNcQFg== X-Google-Smtp-Source: AA0mqf4Z9KF9DYfdJQdqGvbtRloYOPQXnN3MkKcJxdOs80iDic7Ysg9e6qfGKtqJuC+1emfUPfQ+gw== X-Received: by 2002:a50:ff04:0:b0:462:709:9f7b with SMTP id a4-20020a50ff04000000b0046207099f7bmr19331341edu.263.1668595860175; Wed, 16 Nov 2022 02:51:00 -0800 (PST) Received: from phenom.ffwll.local (212-51-149-33.fiber7.init7.net. [212.51.149.33]) by smtp.gmail.com with ESMTPSA id s6-20020a170906bc4600b007aed2057eaesm6056420ejv.161.2022.11.16.02.50.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Nov 2022 02:50:59 -0800 (PST) Date: Wed, 16 Nov 2022 11:50:57 +0100 From: Daniel Vetter To: David Hildenbrand Cc: linux-kernel@vger.kernel.org, x86@kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-perf-users@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kselftest@vger.kernel.org, Linus Torvalds , Andrew Morton , Jason Gunthorpe , John Hubbard , Peter Xu , Greg Kroah-Hartman , Andrea Arcangeli , Hugh Dickins , Nadav Amit , Vlastimil Babka , Matthew Wilcox , Mike Kravetz , Muchun Song , Shuah Khan , Lucas Stach , David Airlie , Oded Gabbay , Arnd Bergmann , Christoph Hellwig , Alex Williamson , Inki Dae , Seung-Woo Kim , Kyungmin Park , Daniel Vetter , Krzysztof Kozlowski Subject: Re: [PATCH mm-unstable v1 17/20] drm/exynos: remove FOLL_FORCE usage Message-ID: Mail-Followup-To: David Hildenbrand , linux-kernel@vger.kernel.org, x86@kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-perf-users@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kselftest@vger.kernel.org, Linus Torvalds , Andrew Morton , Jason Gunthorpe , John Hubbard , Peter Xu , Greg Kroah-Hartman , Andrea Arcangeli , Hugh Dickins , Nadav Amit , Vlastimil Babka , Matthew Wilcox , Mike Kravetz , Muchun Song , Shuah Khan , Lucas Stach , David Airlie , Oded Gabbay , Arnd Bergmann , Christoph Hellwig , Alex Williamson , Inki Dae , Seung-Woo Kim , Kyungmin Park , Krzysztof Kozlowski References: <20221116102659.70287-1-david@redhat.com> <20221116102659.70287-18-david@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20221116102659.70287-18-david@redhat.com> X-Operating-System: Linux phenom 5.19.0-2-amd64 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221116_025101_632723_AF847FE2 X-CRM114-Status: GOOD ( 24.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Nov 16, 2022 at 11:26:56AM +0100, David Hildenbrand wrote: > FOLL_FORCE is really only for ptrace access. As we unpin the pinned pages > using unpin_user_pages_dirty_lock(true), the assumption is that all these > pages are writable. > > FOLL_FORCE in this case seems to be a legacy leftover. Let's just remove > it. > > Cc: Inki Dae > Cc: Seung-Woo Kim > Cc: Kyungmin Park > Cc: David Airlie > Cc: Daniel Vetter > Cc: Krzysztof Kozlowski > Signed-off-by: David Hildenbrand Reviewed-by: Daniel Vetter Plus ack for merging through the appropriate non-drm tree. -Daniel > --- > drivers/gpu/drm/exynos/exynos_drm_g2d.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c > index 471fd6c8135f..e19c2ceb3759 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c > @@ -477,7 +477,7 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct g2d_data *g2d, > } > > ret = pin_user_pages_fast(start, npages, > - FOLL_FORCE | FOLL_WRITE | FOLL_LONGTERM, > + FOLL_WRITE | FOLL_LONGTERM, > g2d_userptr->pages); > if (ret != npages) { > DRM_DEV_ERROR(g2d->dev, > -- > 2.38.1 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel