set_pages_uc
#define map_page_into_agp(page) set_pages_uc(page, 1)
int set_pages_uc(struct page *page, int numpages);
EXPORT_SYMBOL(set_pages_uc);
if (set_pages_uc(page, 4) < 0) {
set_pages_uc(page, 1);
set_pages_uc(dev_priv->scratch_page, 1);