241 static unsigned long get_init_ra_size(unsigned long size, unsigned long max)  in get_init_ra_size()  argument
245 	if (newsize <= max / 32)  in get_init_ra_size()
247 	else if (newsize <= max / 4)  in get_init_ra_size()
250 		newsize = max;  in get_init_ra_size()
260 						unsigned long max)  in get_next_ra_size()  argument
265 	if (cur < max / 16)  in get_next_ra_size()
270 	return min(newsize, max);  in get_next_ra_size()
319 				   pgoff_t offset, unsigned long max)  in count_history_pages()  argument
324 	head = page_cache_prev_hole(mapping, offset - 1, max);  in count_history_pages()
337 				 unsigned long max)  in try_context_readahead()  argument
341 	size = count_history_pages(mapping, offset, max);  in try_context_readahead()
358 	ra->size = min(size + req_size, max);  in try_context_readahead()
373 	unsigned long max = ra->ra_pages;  in ondemand_readahead()  local
389 		ra->size = get_next_ra_size(ra, max);  in ondemand_readahead()
404 		start = page_cache_next_hole(mapping, offset + 1, max);  in ondemand_readahead()
407 		if (!start || start - offset > max)  in ondemand_readahead()
413 		ra->size = get_next_ra_size(ra, max);  in ondemand_readahead()
421 	if (req_size > max)  in ondemand_readahead()
437 	if (try_context_readahead(mapping, ra, offset, req_size, max))  in ondemand_readahead()
448 	ra->size = get_init_ra_size(req_size, max);  in ondemand_readahead()
458 		ra->async_size = get_next_ra_size(ra, max);  in ondemand_readahead()