[PATCH 05/26] omap3isp: Make isp_video_buffer_prepare_user() use get_user_pages_fast()

[Jan Kara]

CC: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
CC: linux-media@vger.kernel.org
Signed-off-by: Jan Kara <j...@suse.cz>
---
 drivers/media/platform/omap3isp/ispqueue.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/media/platform/omap3isp/ispqueue.c 
b/drivers/media/platform/omap3isp/ispqueue.c
index e15f01342058..bed380395e6c 100644
--- a/drivers/media/platform/omap3isp/ispqueue.c
+++ b/drivers/media/platform/omap3isp/ispqueue.c
@@ -331,13 +331,9 @@ static int isp_video_buffer_prepare_user(struct 
isp_video_buffer *buf)
        if (buf->pages == NULL)
                return -ENOMEM;
 
-       down_read(&current->mm->mmap_sem);
-       ret = get_user_pages(current, current->mm, data & PAGE_MASK,
-                            buf->npages,
-                            buf->vbuf.type == V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
-                            buf->pages, NULL);
-       up_read(&current->mm->mmap_sem);
-
+       ret = get_user_pages_fast(data & PAGE_MASK, buf->npages,
+                                 buf->vbuf.type == V4L2_BUF_TYPE_VIDEO_CAPTURE,
+                                 buf->pages);
        if (ret != buf->npages) {
                buf->npages = ret < 0 ? 0 : ret;
                isp_video_buffer_cleanup(buf);
-- 
1.8.1.4

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