153 			pgoff_t offset, unsigned long nr_to_read,  in __do_page_cache_readahead()  argument
173 		pgoff_t page_offset = offset + page_idx;  in __do_page_cache_readahead()
211 		pgoff_t offset, unsigned long nr_to_read)  in force_page_cache_readahead()  argument
225 						offset, this_chunk, 0);  in force_page_cache_readahead()
229 		offset += this_chunk;  in force_page_cache_readahead()
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()
327 	return offset - 1 - head;  in count_history_pages()
335 				 pgoff_t offset,  in try_context_readahead()  argument
341 	size = count_history_pages(mapping, offset, max);  in try_context_readahead()
354 	if (size >= offset)  in try_context_readahead()
357 	ra->start = offset;  in try_context_readahead()
370 		   bool hit_readahead_marker, pgoff_t offset,  in ondemand_readahead()  argument
379 	if (!offset)  in ondemand_readahead()
386 	if ((offset == (ra->start + ra->size - ra->async_size) ||  in ondemand_readahead()
387 	     offset == (ra->start + ra->size))) {  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()
411 		ra->size = start - offset;	/* old async_size */  in ondemand_readahead()
430 	if (offset - prev_offset <= 1UL)  in ondemand_readahead()
437 	if (try_context_readahead(mapping, ra, offset, req_size, max))  in ondemand_readahead()
444 	return __do_page_cache_readahead(mapping, filp, offset, req_size, 0);  in ondemand_readahead()
447 	ra->start = offset;  in ondemand_readahead()
457 	if (offset == ra->start && ra->size == ra->async_size) {  in ondemand_readahead()
481 			       pgoff_t offset, unsigned long req_size)  in page_cache_sync_readahead()  argument
489 		force_page_cache_readahead(mapping, filp, offset, req_size);  in page_cache_sync_readahead()
494 	ondemand_readahead(mapping, ra, filp, false, offset, req_size);  in page_cache_sync_readahead()
516 			   struct page *page, pgoff_t offset,  in page_cache_async_readahead()  argument
538 	ondemand_readahead(mapping, ra, filp, true, offset, req_size);  in page_cache_async_readahead()
552 SYSCALL_DEFINE3(readahead, int, fd, loff_t, offset, size_t, count)  in SYSCALL_DEFINE3()  argument
562 			pgoff_t start = offset >> PAGE_CACHE_SHIFT;  in SYSCALL_DEFINE3()
563 			pgoff_t end = (offset + count - 1) >> PAGE_CACHE_SHIFT;  in SYSCALL_DEFINE3()