32 file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping)  in file_ra_state_init()  argument
34 	ra->ra_pages = inode_to_bdi(mapping->host)->ra_pages;  in file_ra_state_init()
46 static void read_cache_pages_invalidate_page(struct address_space *mapping,  in read_cache_pages_invalidate_page()  argument
52 		page->mapping = mapping;  in read_cache_pages_invalidate_page()
54 		page->mapping = NULL;  in read_cache_pages_invalidate_page()
63 static void read_cache_pages_invalidate_pages(struct address_space *mapping,  in read_cache_pages_invalidate_pages()  argument
71 		read_cache_pages_invalidate_page(mapping, victim);  in read_cache_pages_invalidate_pages()
85 int read_cache_pages(struct address_space *mapping, struct list_head *pages,  in read_cache_pages()  argument
94 		if (add_to_page_cache_lru(page, mapping, page->index,  in read_cache_pages()
95 				readahead_gfp_mask(mapping))) {  in read_cache_pages()
96 			read_cache_pages_invalidate_page(mapping, page);  in read_cache_pages()
103 			read_cache_pages_invalidate_pages(mapping, pages);  in read_cache_pages()
113 static int read_pages(struct address_space *mapping, struct file *filp,  in read_pages()  argument
122 	if (mapping->a_ops->readpages) {  in read_pages()
123 		ret = mapping->a_ops->readpages(filp, mapping, pages, nr_pages);  in read_pages()
132 		if (!add_to_page_cache_lru(page, mapping, page->index, gfp))  in read_pages()
133 			mapping->a_ops->readpage(filp, page);  in read_pages()
152 unsigned int __do_page_cache_readahead(struct address_space *mapping,  in __do_page_cache_readahead()  argument
156 	struct inode *inode = mapping->host;  in __do_page_cache_readahead()
163 	gfp_t gfp_mask = readahead_gfp_mask(mapping);  in __do_page_cache_readahead()
180 		page = radix_tree_lookup(&mapping->i_pages, page_offset);  in __do_page_cache_readahead()
189 				read_pages(mapping, filp, &page_pool, nr_pages,  in __do_page_cache_readahead()
211 		read_pages(mapping, filp, &page_pool, nr_pages, gfp_mask);  in __do_page_cache_readahead()
221 int force_page_cache_readahead(struct address_space *mapping, struct file *filp,  in force_page_cache_readahead()  argument
224 	struct backing_dev_info *bdi = inode_to_bdi(mapping->host);  in force_page_cache_readahead()
228 	if (unlikely(!mapping->a_ops->readpage && !mapping->a_ops->readpages))  in force_page_cache_readahead()
242 		__do_page_cache_readahead(mapping, filp, offset, this_chunk, 0);  in force_page_cache_readahead()
333 static pgoff_t count_history_pages(struct address_space *mapping,  in count_history_pages()  argument
339 	head = page_cache_prev_hole(mapping, offset - 1, max);  in count_history_pages()
348 static int try_context_readahead(struct address_space *mapping,  in try_context_readahead()  argument
356 	size = count_history_pages(mapping, offset, max);  in try_context_readahead()
383 ondemand_readahead(struct address_space *mapping,  in ondemand_readahead()  argument
388 	struct backing_dev_info *bdi = inode_to_bdi(mapping->host);  in ondemand_readahead()
428 		start = page_cache_next_hole(mapping, offset + 1, max_pages);  in ondemand_readahead()
461 	if (try_context_readahead(mapping, ra, offset, req_size, max_pages))  in ondemand_readahead()
468 	return __do_page_cache_readahead(mapping, filp, offset, req_size, 0);  in ondemand_readahead()
493 	return ra_submit(ra, mapping, filp);  in ondemand_readahead()
510 void page_cache_sync_readahead(struct address_space *mapping,  in page_cache_sync_readahead()  argument
523 		force_page_cache_readahead(mapping, filp, offset, req_size);  in page_cache_sync_readahead()
528 	ondemand_readahead(mapping, ra, filp, false, offset, req_size);  in page_cache_sync_readahead()
548 page_cache_async_readahead(struct address_space *mapping,  in page_cache_async_readahead()  argument
568 	if (inode_read_congested(mapping->host))  in page_cache_async_readahead()
575 	ondemand_readahead(mapping, ra, filp, true, offset, req_size);  in page_cache_async_readahead()