compound_nr
(PageHead(page) && compound_nr(page) <= npages))
int i, nr = compound ? compound_nr(page) : 1;
for (i = 0; i < compound_nr(page); i++)
for (i = 0; i < compound_nr(page); i++) {
for (i = 0; i < compound_nr(page); i++)
unsigned long nr_pages = compound_nr(head);