virt_to_page
kunmap(virt_to_page(vaddr));
return (virt_to_page(addr));
return (virt_to_page(p));
struct page *page = virt_to_page(p);
sg_set_page(sg, virt_to_page(buf), buflen,
page = virt_to_page((void *)vaddr);
page = virt_to_page(addr);
d_page->p = virt_to_page(d_page->vaddr);
pages[i] = virt_to_page(buf->page_list[i].buf);
pages[i] = virt_to_page(buf->page_list[i].buf);