52 struct page_ext {  struct
95 extern struct page_ext *page_ext_get(const struct page *page);
96 extern void page_ext_put(struct page_ext *page_ext);
97 extern struct page_ext *page_ext_lookup(unsigned long pfn);
99 static inline void *page_ext_data(struct page_ext *page_ext,  in page_ext_data()  argument
102 	return (void *)(page_ext) + ops->offset;  in page_ext_data()
105 static inline struct page_ext *page_ext_next(struct page_ext *curr)  in page_ext_next()
115 	struct page_ext *page_ext;  member
127 static inline struct page_ext *page_ext_iter_begin(struct page_ext_iter *iter,  in page_ext_iter_begin()
132 	iter->page_ext = page_ext_lookup(pfn);  in page_ext_iter_begin()
134 	return iter->page_ext;  in page_ext_iter_begin()
145 static inline struct page_ext *page_ext_iter_next(struct page_ext_iter *iter)  in page_ext_iter_next()
149 	if (WARN_ON_ONCE(!iter->page_ext))  in page_ext_iter_next()
156 		iter->page_ext = page_ext_next(iter->page_ext);  in page_ext_iter_next()
158 		iter->page_ext = page_ext_lookup(pfn);  in page_ext_iter_next()
160 	return iter->page_ext;  in page_ext_iter_next()
169 static inline struct page_ext *page_ext_iter_get(const struct page_ext_iter *iter)  in page_ext_iter_get()
171 	return iter->page_ext;  in page_ext_iter_get()
190 struct page_ext;
213 static inline struct page_ext *page_ext_get(const struct page *page)  in page_ext_get()
218 static inline void page_ext_put(struct page_ext *page_ext)  in page_ext_put()  argument