From patchwork Wed Aug 31 15:37:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12960946 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C9518ECAAD4 for ; Wed, 31 Aug 2022 15:42:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231891AbiHaPmS (ORCPT ); Wed, 31 Aug 2022 11:42:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35922 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232131AbiHaPld (ORCPT ); Wed, 31 Aug 2022 11:41:33 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB93D792E1; Wed, 31 Aug 2022 08:40:36 -0700 (PDT) Received: from dimapc.. (109-252-119-13.nat.spd-mgts.ru [109.252.119.13]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: dmitry.osipenko) by madras.collabora.co.uk (Postfix) with ESMTPSA id ECE2C6601DF6; Wed, 31 Aug 2022 16:40:04 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1661960407; bh=tqdR/oZFKJHCKMAPiT2kfONL23uSAzfC/46PfISfXXw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Y0fbl/3rC8aDDsV0MV7a9HOp3kNjBbJX9SYbDtxmYtk8yjvc3rkHWo5M8ppTQpiKa ZzUliICistENhQk2agFlqmQiTp9XBNKykfoC0xrSjlabl/sYIiptJ55Vd9WhuB5sHF M0epvMhwyEmDbwWQB9RhA7iBFtTNh5z+Kg66Z9GjBDMpjKs7r06OoiiUn/FWcoOrZ7 PuA498YAz+IjOVSyibs7Gaqf/MxVpZRU7bCAUqLOVJRCxTQXuEcSR+Uo1YTTXj70x5 r85mxWtpRWHr89Anv7IJ3wzhus4eLyo4K7PY2M2YcPnS7HNoFcR7R4AzBZiWm3uVdY IqAW+I5pxeilA== From: Dmitry Osipenko To: David Airlie , Gerd Hoffmann , Gurchetan Singh , Chia-I Wu , Daniel Vetter , Daniel Almeida , Gert Wollny , Gustavo Padovan , Daniel Stone , Tomeu Vizoso , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Clark , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= , "Pan, Xinhui" , Thierry Reding , Tomasz Figa , Marek Szyprowski , Mauro Carvalho Chehab , Alex Deucher , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , =?utf-8?q?Thomas_Hellstr?= =?utf-8?q?=C3=B6m?= , Qiang Yu , Srinivas Kandagatla , Amol Maheshwari , Jason Gunthorpe , Leon Romanovsky , Juergen Gross , Stefano Stabellini , Oleksandr Tyshchenko , Tomi Valkeinen , Russell King , Lucas Stach , Christian Gmeiner Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Dmitry Osipenko , linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, amd-gfx@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, kernel@collabora.com, virtualization@lists.linux-foundation.org, linux-rdma@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: [PATCH v4 17/21] dma-buf: Move dma_buf_map_attachment() to dynamic locking specification Date: Wed, 31 Aug 2022 18:37:53 +0300 Message-Id: <20220831153757.97381-18-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220831153757.97381-1-dmitry.osipenko@collabora.com> References: <20220831153757.97381-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Move dma-buf attachment mapping functions to the dynamic locking specification by asserting that the reservation lock is held. Signed-off-by: Dmitry Osipenko Reviewed-by: Christian König --- drivers/dma-buf/dma-buf.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index 073942bf5ae9..8e928fe6e8df 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -1037,8 +1037,7 @@ struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *attach, if (WARN_ON(!attach || !attach->dmabuf)) return ERR_PTR(-EINVAL); - if (dma_buf_attachment_is_dynamic(attach)) - dma_resv_assert_held(attach->dmabuf->resv); + dma_resv_assert_held(attach->dmabuf->resv); if (attach->sgt) { /* @@ -1053,7 +1052,6 @@ struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *attach, } if (dma_buf_is_dynamic(attach->dmabuf)) { - dma_resv_assert_held(attach->dmabuf->resv); if (!IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY)) { r = attach->dmabuf->ops->pin(attach); if (r) @@ -1142,15 +1140,11 @@ void dma_buf_unmap_attachment(struct dma_buf_attachment *attach, if (WARN_ON(!attach || !attach->dmabuf || !sg_table)) return; - if (dma_buf_attachment_is_dynamic(attach)) - dma_resv_assert_held(attach->dmabuf->resv); + dma_resv_assert_held(attach->dmabuf->resv); if (attach->sgt == sg_table) return; - if (dma_buf_is_dynamic(attach->dmabuf)) - dma_resv_assert_held(attach->dmabuf->resv); - __unmap_dma_buf(attach, sg_table, direction); if (dma_buf_is_dynamic(attach->dmabuf) &&