From patchwork Mon Nov 7 16:17:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 13034815 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 0D473C433FE for ; Mon, 7 Nov 2022 16:29:27 +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:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=LqIkVQrQXh7S/z6afcnGMCFptJpRPoIAI7H0+BvsJQc=; b=nqmnXFwLerffJh wnc68dTzX7hJRpAFyaFB9q7KmOcx7AOA/aBF3QhtaImIuLky/e1AJ/pqr9dfrNVZQcYdpmk5fYmKh 4ZUoWUeivVhtabSdFKZKoNkcHuAfq6rs+a0ISxmBxi5slICWH/zDM0Aupcd/7lcsfIIpj8pPk0oSc jhXPfPQ1zr2/5xjtRITJLO3GK+FzLc8dceGDNemIriFFvW9PEKqr0q0R/ZAsyd9Sv2Fd2SHyovxuV v7OFum6RnFPdUIOB6KPiE8X4/ua/IMdPFYaHXLpsbyC2sDYGIbeNNGJiKh1MfNVFMu+X1XxVSjoNH 6H2eZMSm3lEbbdYzLZNg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1os4yl-00GBGU-OC; Mon, 07 Nov 2022 16:28:08 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1os4qi-00G7F5-1O for linux-arm-kernel@lists.infradead.org; Mon, 07 Nov 2022 16:19:49 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1667837987; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=y3EQBQS9ueNhIRYtlLuS9A1vlgsPqX0+ffQJOXP9CF0=; b=iTcdGpZO5IVRQB3qN2YO20GLBp3TY7ZYG2WNgGRPximHtiJ2mdhPFAQ6E96PZaKaTmPIaf TauLVJlsVZeJMgUPSRiTPE/XIK3B//HZvqtYQfnkf3dVCtf6pZuKsWfOiSg2XTGTSmx/YW j5K4tNshHEXTRqUC5/SOLCwK+lP2VCU= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-182-zow3dLr8Oq6fkd6eMjvZxg-1; Mon, 07 Nov 2022 11:19:39 -0500 X-MC-Unique: zow3dLr8Oq6fkd6eMjvZxg-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id A468C185A79C; Mon, 7 Nov 2022 16:19:37 +0000 (UTC) Received: from t480s.redhat.com (unknown [10.39.195.106]) by smtp.corp.redhat.com (Postfix) with ESMTP id 236834B3FC6; Mon, 7 Nov 2022 16:19:32 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, linux-kselftest@vger.kernel.org, David Hildenbrand , 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 , Lucas Stach , David Airlie , Oded Gabbay , Arnd Bergmann , Inki Dae , Seung-Woo Kim , Kyungmin Park , Daniel Vetter , Krzysztof Kozlowski Subject: [PATCH RFC 17/19] drm/exynos: remove FOLL_FORCE usage Date: Mon, 7 Nov 2022 17:17:38 +0100 Message-Id: <20221107161740.144456-18-david@redhat.com> In-Reply-To: <20221107161740.144456-1-david@redhat.com> References: <20221107161740.144456-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221107_081948_169645_96F2D453 X-CRM114-Status: GOOD ( 16.23 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org FOLL_FORCE is really only for debugger 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 --- 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,