117 	unsigned long pfn = page_to_pfn(page);  in lookup_page_ext()  local
130 	index = pfn - round_down(node_start_pfn(page_to_nid(page)),  in lookup_page_ext()
192 	unsigned long pfn = page_to_pfn(page);  in lookup_page_ext()  local
193 	struct mem_section *section = __pfn_to_section(pfn);  in lookup_page_ext()
202 	return get_entry(section->page_ext, pfn);  in lookup_page_ext()
221 static int __meminit init_section_page_ext(unsigned long pfn, int nid)  in init_section_page_ext()  argument
227 	section = __pfn_to_section(pfn);  in init_section_page_ext()
251 	pfn &= PAGE_SECTION_MASK;  in init_section_page_ext()
252 	section->page_ext = (void *)base - page_ext_size * pfn;  in init_section_page_ext()
273 static void __free_page_ext(unsigned long pfn)  in __free_page_ext()  argument
278 	ms = __pfn_to_section(pfn);  in __free_page_ext()
281 	base = get_entry(ms->page_ext, pfn);  in __free_page_ext()
290 	unsigned long start, end, pfn;  in online_page_ext()  local
306 	for (pfn = start; !fail && pfn < end; pfn += PAGES_PER_SECTION) {  in online_page_ext()
307 		if (!pfn_present(pfn))  in online_page_ext()
309 		fail = init_section_page_ext(pfn, nid);  in online_page_ext()
315 	for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION)  in online_page_ext()
316 		__free_page_ext(pfn);  in online_page_ext()
324 	unsigned long start, end, pfn;  in offline_page_ext()  local
329 	for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION)  in offline_page_ext()
330 		__free_page_ext(pfn);  in offline_page_ext()
368 	unsigned long pfn;  in page_ext_init()  local
384 		for (pfn = start_pfn; pfn < end_pfn;  in page_ext_init()
385 			pfn = ALIGN(pfn + 1, PAGES_PER_SECTION)) {  in page_ext_init()
387 			if (!pfn_valid(pfn))  in page_ext_init()
395 			if (pfn_to_nid(pfn) != nid)  in page_ext_init()
397 			if (init_section_page_ext(pfn, nid))  in page_ext_init()