gnttab_page_cache_get
if (gnttab_page_cache_get(&ring->free_pages,
EXPORT_SYMBOL_GPL(gnttab_page_cache_get);
if (gnttab_page_cache_get(&info->free_pages, pg + mapcount)) {
int gnttab_page_cache_get(struct gnttab_page_cache *cache, struct page **page);