183 	unsigned long pfn = page_to_pfn(page);  in lookup_page_ext()  local
197 	index = pfn - round_down(node_start_pfn(page_to_nid(page)),  in lookup_page_ext()
263 	unsigned long pfn = page_to_pfn(page);  in lookup_page_ext()  local
264 	struct mem_section *section = __pfn_to_section(pfn);  in lookup_page_ext()
276 	return get_entry(page_ext, pfn);  in lookup_page_ext()
296 static int __meminit init_section_page_ext(unsigned long pfn, int nid)  in init_section_page_ext()  argument
302 	section = __pfn_to_section(pfn);  in init_section_page_ext()
326 	pfn &= PAGE_SECTION_MASK;  in init_section_page_ext()
327 	section->page_ext = (void *)base - page_ext_size * pfn;  in init_section_page_ext()
348 static void __free_page_ext(unsigned long pfn)  in __free_page_ext()  argument
353 	ms = __pfn_to_section(pfn);  in __free_page_ext()
366 	base = get_entry(base, pfn);  in __free_page_ext()
370 static void __invalidate_page_ext(unsigned long pfn)  in __invalidate_page_ext()  argument
375 	ms = __pfn_to_section(pfn);  in __invalidate_page_ext()
386 	unsigned long start, end, pfn;  in online_page_ext()  local
402 	for (pfn = start; !fail && pfn < end; pfn += PAGES_PER_SECTION)  in online_page_ext()
403 		fail = init_section_page_ext(pfn, nid);  in online_page_ext()
408 	for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION)  in online_page_ext()
409 		__free_page_ext(pfn);  in online_page_ext()
417 	unsigned long start, end, pfn;  in offline_page_ext()  local
431 	for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION)  in offline_page_ext()
432 		__invalidate_page_ext(pfn);  in offline_page_ext()
436 	for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION)  in offline_page_ext()
437 		__free_page_ext(pfn);  in offline_page_ext()
475 	unsigned long pfn;  in page_ext_init()  local
491 		for (pfn = start_pfn; pfn < end_pfn;  in page_ext_init()
492 			pfn = ALIGN(pfn + 1, PAGES_PER_SECTION)) {  in page_ext_init()
494 			if (!pfn_valid(pfn))  in page_ext_init()
502 			if (pfn_to_nid(pfn) != nid)  in page_ext_init()
504 			if (init_section_page_ext(pfn, nid))  in page_ext_init()