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Tue, 10 Dec 2019 18:53:29 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v9 14/25] drm/via: set FOLL_PIN via pin_user_pages_fast() Date: Tue, 10 Dec 2019 18:53:07 -0800 Message-ID: <20191211025318.457113-15-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191211025318.457113-1-jhubbard@nvidia.com> References: <20191211025318.457113-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1576032805; bh=ky7gpstoQdJr5rtxFEQnjpS0lvKe5L6cg7jiu/68ipE=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:X-NVConfidentiality: Content-Type:Content-Transfer-Encoding; b=LFvC0+w82Ypn+sMKbs8fs6t31wpDg9MkaK5WuVKkO58UZX5B6aqYEHHGY1Ha0IIg5 CeyXndoKKwWs3zNoIlyK00SDSA3cpjAExrn0ps6oqR23EF0aEe7wZGH/wOkE3kqhOX 2fL/Ucq4S/wWX3q22BnWCDfvk0idk5o06SA+ZuPG/QP1685Ia0sOczY12SmnWjEiGF M0r6VdUHabeIt5zajlTSJyq8QGi0eHUyeRe14GygOmuCPbbuWr7HftA9sv9bheCNox JvUg6RKXPwNSeLSADN5K3Z+qd4xJ2m5MNmXZQAI9gTD1MZJY17SgrpHg/0wSCwruhT slf9CB7P6igNQ== X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Michal Hocko , Jan Kara , kvm@vger.kernel.org, linux-doc@vger.kernel.org, David Airlie , Dave Chinner , dri-devel@lists.freedesktop.org, LKML , linux-mm@kvack.org, Paul Mackerras , linux-kselftest@vger.kernel.org, Ira Weiny , Jonathan Corbet , linux-rdma@vger.kernel.org, Christoph Hellwig , Jason Gunthorpe , Vlastimil Babka , Daniel Vetter , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , linux-media@vger.kernel.org, Shuah Khan , John Hubbard , linux-block@vger.kernel.org, =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Al Viro , Dan Williams , Mauro Carvalho Chehab , Magnus Karlsson , Jens Axboe , netdev@vger.kernel.org, Alex Williamson , Daniel Vetter , linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, "David S . Miller" , Mike Kravetz Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Convert drm/via to use the new pin_user_pages_fast() call, which sets FOLL_PIN. Setting FOLL_PIN is now required for code that requires tracking of pinned pages, and therefore for any code that calls put_user_page(). In partial anticipation of this work, the drm/via driver was already calling put_user_page() instead of put_page(). Therefore, in order to convert from the get_user_pages()/put_page() model, to the pin_user_pages()/put_user_page() model, the only change required is to change get_user_pages() to pin_user_pages(). Acked-by: Daniel Vetter Reviewed-by: J=C3=A9r=C3=B4me Glisse Reviewed-by: Ira Weiny Signed-off-by: John Hubbard --- drivers/gpu/drm/via/via_dmablit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/via/via_dmablit.c b/drivers/gpu/drm/via/via_dm= ablit.c index 3db000aacd26..37c5e572993a 100644 --- a/drivers/gpu/drm/via/via_dmablit.c +++ b/drivers/gpu/drm/via/via_dmablit.c @@ -239,7 +239,7 @@ via_lock_all_dma_pages(drm_via_sg_info_t *vsg, drm_via= _dmablit_t *xfer) vsg->pages =3D vzalloc(array_size(sizeof(struct page *), vsg->num_pages))= ; if (NULL =3D=3D vsg->pages) return -ENOMEM; - ret =3D get_user_pages_fast((unsigned long)xfer->mem_addr, + ret =3D pin_user_pages_fast((unsigned long)xfer->mem_addr, vsg->num_pages, vsg->direction =3D=3D DMA_FROM_DEVICE ? FOLL_WRITE : 0, vsg->pages); --=20 2.24.0