140 file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping)  in file_ra_state_init()  argument
142 	ra->ra_pages = inode_to_bdi(mapping->host)->ra_pages;  in file_ra_state_init()
149 	const struct address_space_operations *aops = rac->mapping->a_ops;  in read_pages()
209 	struct address_space *mapping = ractl->mapping;  in page_cache_ra_unbounded()  local
211 	gfp_t gfp_mask = readahead_gfp_mask(mapping);  in page_cache_ra_unbounded()
226 	filemap_invalidate_lock_shared(mapping);  in page_cache_ra_unbounded()
231 		struct folio *folio = xa_load(&mapping->i_pages, index + i);  in page_cache_ra_unbounded()
251 		if (filemap_add_folio(mapping, folio, index + i,  in page_cache_ra_unbounded()
271 	filemap_invalidate_unlock_shared(mapping);  in page_cache_ra_unbounded()
285 	struct inode *inode = ractl->mapping->host;  in do_page_cache_ra()
310 	struct address_space *mapping = ractl->mapping;  in force_page_cache_ra()  local
312 	struct backing_dev_info *bdi = inode_to_bdi(mapping->host);  in force_page_cache_ra()
315 	if (unlikely(!mapping->a_ops->read_folio && !mapping->a_ops->readahead))  in force_page_cache_ra()
419 static pgoff_t count_history_pages(struct address_space *mapping,  in count_history_pages()  argument
425 	head = page_cache_prev_miss(mapping, index - 1, max);  in count_history_pages()
434 static int try_context_readahead(struct address_space *mapping,  in try_context_readahead()  argument
442 	size = count_history_pages(mapping, index, max);  in try_context_readahead()
489 	err = filemap_add_folio(ractl->mapping, folio, index, gfp);  in ra_alloc_folio()
503 	struct address_space *mapping = ractl->mapping;  in page_cache_ra_order()  local
505 	pgoff_t limit = (i_size_read(mapping->host) - 1) >> PAGE_SHIFT;  in page_cache_ra_order()
508 	gfp_t gfp = readahead_gfp_mask(mapping);  in page_cache_ra_order()
510 	if (!mapping_large_folio_support(mapping) || ra->size < 4)  in page_cache_ra_order()
523 	filemap_invalidate_lock_shared(mapping);  in page_cache_ra_order()
550 	filemap_invalidate_unlock_shared(mapping);  in page_cache_ra_order()
569 	struct backing_dev_info *bdi = inode_to_bdi(ractl->mapping->host);  in ondemand_readahead()
613 		start = page_cache_next_miss(ractl->mapping, index + 1,  in ondemand_readahead()
647 	if (try_context_readahead(ractl->mapping, ra, index, req_size,  in ondemand_readahead()
794 	struct address_space *mapping = ractl->mapping;  in readahead_expand()  local
797 	gfp_t gfp_mask = readahead_gfp_mask(mapping);  in readahead_expand()
804 		struct page *page = xa_load(&mapping->i_pages, index);  in readahead_expand()
812 		if (add_to_page_cache_lru(page, mapping, index, gfp_mask) < 0) {  in readahead_expand()
827 		struct page *page = xa_load(&mapping->i_pages, index);  in readahead_expand()
835 		if (add_to_page_cache_lru(page, mapping, index, gfp_mask) < 0) {  in readahead_expand()