128 				page_ext_size = sizeof(struct page_ext);  in invoke_need_callbacks()
156 static inline struct page_ext *get_entry(void *base, unsigned long index)  in get_entry()
167 static struct page_ext *lookup_page_ext(const struct page *page)  in lookup_page_ext()
171 	struct page_ext *base;  in lookup_page_ext()
190 	struct page_ext *base;  in alloc_node_page_ext()
242 static bool page_ext_invalid(struct page_ext *page_ext)  in page_ext_invalid()  argument
244 	return !page_ext || (((unsigned long)page_ext & PAGE_EXT_INVALID) == PAGE_EXT_INVALID);  in page_ext_invalid()
247 static struct page_ext *lookup_page_ext(const struct page *page)  in lookup_page_ext()
251 	struct page_ext *page_ext = READ_ONCE(section->page_ext);  in lookup_page_ext()  local
260 	if (page_ext_invalid(page_ext))  in lookup_page_ext()
262 	return get_entry(page_ext, pfn);  in lookup_page_ext()
285 	struct page_ext *base;  in init_section_page_ext()
290 	if (section->page_ext)  in init_section_page_ext()
313 	section->page_ext = (void *)base - page_ext_size * pfn;  in init_section_page_ext()
339 	struct page_ext *base;  in __free_page_ext()
342 	if (!ms || !ms->page_ext)  in __free_page_ext()
345 	base = READ_ONCE(ms->page_ext);  in __free_page_ext()
352 	WRITE_ONCE(ms->page_ext, NULL);  in __free_page_ext()
364 	if (!ms || !ms->page_ext)  in __invalidate_page_ext()
366 	val = (void *)ms->page_ext + PAGE_EXT_INVALID;  in __invalidate_page_ext()
367 	WRITE_ONCE(ms->page_ext, val);  in __invalidate_page_ext()
502 struct page_ext *page_ext_lookup(unsigned long pfn)  in page_ext_lookup()
518 struct page_ext *page_ext_get(const struct page *page)  in page_ext_get()
520 	struct page_ext *page_ext;  in page_ext_get()  local
523 	page_ext = lookup_page_ext(page);  in page_ext_get()
524 	if (!page_ext) {  in page_ext_get()
529 	return page_ext;  in page_ext_get()
545 struct page_ext *page_ext_from_phys(phys_addr_t phys)  in page_ext_from_phys()
565 void page_ext_put(struct page_ext *page_ext)  in page_ext_put()  argument
567 	if (unlikely(!page_ext))  in page_ext_put()