Messages in this thread Patch in this message | | | From | Jan Kara <> | Subject | [PATCH 04/26] drm: Convert via driver to use get_user_pages_fast() | Date | Wed, 2 Oct 2013 16:27:45 +0200 |
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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 8b0f25904e6d..7e3766667d78 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(¤t->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(¤t->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; -- 1.8.1.4
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