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[216.228.112.21]) by smtp.gmail.com with ESMTPSA id r6sm35946836pjb.22.2019.08.04.15.49.30 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Sun, 04 Aug 2019 15:49:31 -0700 (PDT) From: john.hubbard@gmail.com X-Google-Original-From: jhubbard@nvidia.com To: Andrew Morton Date: Sun, 4 Aug 2019 15:48:49 -0700 Message-Id: <20190804224915.28669-9-jhubbard@nvidia.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190804224915.28669-1-jhubbard@nvidia.com> References: <20190804224915.28669-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public Subject: [Xen-devel] [PATCH v2 08/34] media/ivtv: convert put_page() to put_user_page*() X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: linux-fbdev@vger.kernel.org, Jan Kara , kvm@vger.kernel.org, Dave Hansen , Dave Chinner , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, sparclinux@vger.kernel.org, Ira Weiny , ceph-devel@vger.kernel.org, devel@driverdev.osuosl.org, rds-devel@oss.oracle.com, linux-rdma@vger.kernel.org, x86@kernel.org, amd-gfx@lists.freedesktop.org, Christoph Hellwig , Jason Gunthorpe , xen-devel@lists.xenproject.org, devel@lists.orangefs.org, linux-media@vger.kernel.org, John Hubbard , intel-gfx@lists.freedesktop.org, linux-block@vger.kernel.org, =?utf-8?b?SsOpcsO0bWUgR2xpc3Nl?= , linux-rpi-kernel@lists.infradead.org, Dan Williams , Mauro Carvalho Chehab , linux-arm-kernel@lists.infradead.org, linux-nfs@vger.kernel.org, Andy Walls , netdev@vger.kernel.org, LKML , linux-xfs@vger.kernel.org, linux-crypto@vger.kernel.org, linux-fsdevel@vger.kernel.org Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: John Hubbard For pages that were retained via get_user_pages*(), release those pages via the new put_user_page*() routines, instead of via put_page() or release_pages(). This is part a tree-wide conversion, as described in commit fc1d8e7cca2d ("mm: introduce put_user_page*(), placeholder versions"). Cc: Andy Walls Cc: Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org Signed-off-by: John Hubbard --- drivers/media/pci/ivtv/ivtv-udma.c | 14 ++++---------- drivers/media/pci/ivtv/ivtv-yuv.c | 11 +++-------- 2 files changed, 7 insertions(+), 18 deletions(-) diff --git a/drivers/media/pci/ivtv/ivtv-udma.c b/drivers/media/pci/ivtv/ivtv-udma.c index 5f8883031c9c..7c7f33c2412b 100644 --- a/drivers/media/pci/ivtv/ivtv-udma.c +++ b/drivers/media/pci/ivtv/ivtv-udma.c @@ -92,7 +92,7 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr, { struct ivtv_dma_page_info user_dma; struct ivtv_user_dma *dma = &itv->udma; - int i, err; + int err; IVTV_DEBUG_DMA("ivtv_udma_setup, dst: 0x%08x\n", (unsigned int)ivtv_dest_addr); @@ -119,8 +119,7 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr, IVTV_DEBUG_WARN("failed to map user pages, returned %d instead of %d\n", err, user_dma.page_count); if (err >= 0) { - for (i = 0; i < err; i++) - put_page(dma->map[i]); + put_user_pages(dma->map, err); return -EINVAL; } return err; @@ -130,9 +129,7 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr, /* Fill SG List with new values */ if (ivtv_udma_fill_sg_list(dma, &user_dma, 0) < 0) { - for (i = 0; i < dma->page_count; i++) { - put_page(dma->map[i]); - } + put_user_pages(dma->map, dma->page_count); dma->page_count = 0; return -ENOMEM; } @@ -153,7 +150,6 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr, void ivtv_udma_unmap(struct ivtv *itv) { struct ivtv_user_dma *dma = &itv->udma; - int i; IVTV_DEBUG_INFO("ivtv_unmap_user_dma\n"); @@ -170,9 +166,7 @@ void ivtv_udma_unmap(struct ivtv *itv) ivtv_udma_sync_for_cpu(itv); /* Release User Pages */ - for (i = 0; i < dma->page_count; i++) { - put_page(dma->map[i]); - } + put_user_pages(dma->map, dma->page_count); dma->page_count = 0; } diff --git a/drivers/media/pci/ivtv/ivtv-yuv.c b/drivers/media/pci/ivtv/ivtv-yuv.c index cd2fe2d444c0..2c61a11d391d 100644 --- a/drivers/media/pci/ivtv/ivtv-yuv.c +++ b/drivers/media/pci/ivtv/ivtv-yuv.c @@ -30,7 +30,6 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma, struct yuv_playback_info *yi = &itv->yuv_info; u8 frame = yi->draw_frame; struct yuv_frame_info *f = &yi->new_frame_info[frame]; - int i; int y_pages, uv_pages; unsigned long y_buffer_offset, uv_buffer_offset; int y_decode_height, uv_decode_height, y_size; @@ -81,8 +80,7 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma, uv_pages, uv_dma.page_count); if (uv_pages >= 0) { - for (i = 0; i < uv_pages; i++) - put_page(dma->map[y_pages + i]); + put_user_pages(&dma->map[y_pages], uv_pages); rc = -EFAULT; } else { rc = uv_pages; @@ -93,8 +91,7 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma, y_pages, y_dma.page_count); } if (y_pages >= 0) { - for (i = 0; i < y_pages; i++) - put_page(dma->map[i]); + put_user_pages(dma->map, y_pages); /* * Inherit the -EFAULT from rc's * initialization, but allow it to be @@ -112,9 +109,7 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma, /* Fill & map SG List */ if (ivtv_udma_fill_sg_list (dma, &uv_dma, ivtv_udma_fill_sg_list (dma, &y_dma, 0)) < 0) { IVTV_DEBUG_WARN("could not allocate bounce buffers for highmem userspace buffers\n"); - for (i = 0; i < dma->page_count; i++) { - put_page(dma->map[i]); - } + put_user_pages(dma->map, dma->page_count); dma->page_count = 0; return -ENOMEM; }