1292 static inline unsigned int __readahead_batch(struct readahead_control *rac,  in __readahead_batch()  argument
1296 	XA_STATE(xas, &rac->mapping->i_pages, 0);  in __readahead_batch()
1299 	BUG_ON(rac->_batch_count > rac->_nr_pages);  in __readahead_batch()
1300 	rac->_nr_pages -= rac->_batch_count;  in __readahead_batch()
1301 	rac->_index += rac->_batch_count;  in __readahead_batch()
1302 	rac->_batch_count = 0;  in __readahead_batch()
1304 	xas_set(&xas, rac->_index);  in __readahead_batch()
1306 	xas_for_each(&xas, page, rac->_index + rac->_nr_pages - 1) {  in __readahead_batch()
1312 		rac->_batch_count += thp_nr_pages(page);  in __readahead_batch()
1332 #define readahead_page_batch(rac, array)				\  argument
1333 	__readahead_batch(rac, array, ARRAY_SIZE(array))
1339 static inline loff_t readahead_pos(struct readahead_control *rac)  in readahead_pos()  argument
1341 	return (loff_t)rac->_index * PAGE_SIZE;  in readahead_pos()
1348 static inline size_t readahead_length(struct readahead_control *rac)  in readahead_length()  argument
1350 	return rac->_nr_pages * PAGE_SIZE;  in readahead_length()
1357 static inline pgoff_t readahead_index(struct readahead_control *rac)  in readahead_index()  argument
1359 	return rac->_index;  in readahead_index()
1366 static inline unsigned int readahead_count(struct readahead_control *rac)  in readahead_count()  argument
1368 	return rac->_nr_pages;  in readahead_count()
1375 static inline size_t readahead_batch_length(struct readahead_control *rac)  in readahead_batch_length()  argument
1377 	return rac->_batch_count * PAGE_SIZE;  in readahead_batch_length()