[PATCH 3/7] drm: Convert via driver to use get_user_pages_fast()

From: Jan Kara jack@suse.cz

CC: David Airlie airlied@linux.ie CC: dri-devel@lists.freedesktop.org Signed-off-by: Jan Kara jack@suse.cz --- drivers/gpu/drm/via/via_dmablit.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/via/via_dmablit.c b/drivers/gpu/drm/via/via_dmablit.c index d0cbd5ecd7f0..d71add236e62 100644 --- a/drivers/gpu/drm/via/via_dmablit.c +++ b/drivers/gpu/drm/via/via_dmablit.c @@ -238,14 +238,10 @@ via_lock_all_dma_pages(drm_via_sg_info_t *vsg, drm_via_dmablit_t *xfer) vsg->pages = vzalloc(sizeof(struct page *) * vsg->num_pages); if (NULL == vsg->pages) return -ENOMEM; - down_read(&current->mm->mmap_sem); - ret = get_user_pages(current, current->mm, - (unsigned long)xfer->mem_addr, - vsg->num_pages, - (vsg->direction == DMA_FROM_DEVICE), - 0, vsg->pages, NULL); - - up_read(&current->mm->mmap_sem); + ret = get_user_pages_fast((unsigned long)xfer->mem_addr, + vsg->num_pages, + (vsg->direction == DMA_FROM_DEVICE), + vsg->pages); if (ret != vsg->num_pages) { if (ret < 0) return ret;