479 static void handle_write_error(struct address_space *mapping,  in handle_write_error()  argument
483 	if (page_mapping(page) == mapping)  in handle_write_error()
484 		mapping_set_error(mapping, error);  in handle_write_error()
504 static pageout_t pageout(struct page *page, struct address_space *mapping,  in pageout()  argument
525 	if (!mapping) {  in pageout()
539 	if (mapping->a_ops->writepage == NULL)  in pageout()
541 	if (!may_write_to_queue(inode_to_bdi(mapping->host), sc))  in pageout()
555 		res = mapping->a_ops->writepage(page, &wbc);  in pageout()
557 			handle_write_error(mapping, page, res);  in pageout()
579 static int __remove_mapping(struct address_space *mapping, struct page *page,  in __remove_mapping()  argument
583 	BUG_ON(mapping != page_mapping(page));  in __remove_mapping()
585 	spin_lock_irq(&mapping->tree_lock);  in __remove_mapping()
623 		spin_unlock_irq(&mapping->tree_lock);  in __remove_mapping()
629 		freepage = mapping->a_ops->freepage;  in __remove_mapping()
641 		    !mapping_exiting(mapping))  in __remove_mapping()
642 			shadow = workingset_eviction(mapping, page);  in __remove_mapping()
644 		spin_unlock_irq(&mapping->tree_lock);  in __remove_mapping()
653 	spin_unlock_irq(&mapping->tree_lock);  in __remove_mapping()
663 int remove_mapping(struct address_space *mapping, struct page *page)  in remove_mapping()  argument
665 	if (__remove_mapping(mapping, page, false)) {  in remove_mapping()
815 	struct address_space *mapping;  in page_check_dirty_writeback()  local
835 	mapping = page_mapping(page);  in page_check_dirty_writeback()
836 	if (mapping && mapping->a_ops->is_dirty_writeback)  in page_check_dirty_writeback()
837 		mapping->a_ops->is_dirty_writeback(page, dirty, writeback);  in page_check_dirty_writeback()
867 		struct address_space *mapping;  in shrink_page_list()  local
918 		mapping = page_mapping(page);  in shrink_page_list()
919 		if (((dirty || writeback) && mapping &&  in shrink_page_list()
920 		     bdi_write_congested(inode_to_bdi(mapping->host))) ||  in shrink_page_list()
1015 			mapping = page_mapping(page);  in shrink_page_list()
1022 		if (page_mapped(page) && mapping) {  in shrink_page_list()
1064 			switch (pageout(page, mapping, sc)) {  in shrink_page_list()
1083 				mapping = page_mapping(page);  in shrink_page_list()
1113 			if (!mapping && page_count(page) == 1) {  in shrink_page_list()
1131 		if (!mapping || !__remove_mapping(mapping, page, true))  in shrink_page_list()
1256 			struct address_space *mapping;  in __isolate_lru_page()  local
1267 			mapping = page_mapping(page);  in __isolate_lru_page()
1268 			if (mapping && !mapping->a_ops->migratepage)  in __isolate_lru_page()