120 static struct folio *netfs_grab_folio_for_write(struct address_space *mapping,  in netfs_grab_folio_for_write()  argument
126 	if (mapping_large_folio_support(mapping))  in netfs_grab_folio_for_write()
129 	return __filemap_get_folio(mapping, index, fgp_flags,  in netfs_grab_folio_for_write()
130 				   mapping_gfp_mask(mapping));  in netfs_grab_folio_for_write()
152 	struct address_space *mapping = inode->i_mapping;  in netfs_perform_write()  local
176 			ret = filemap_write_and_wait_range(mapping, pos, pos + iter->count);  in netfs_perform_write()
182 		wbc_attach_fdatawrite_inode(&wbc, mapping->host);  in netfs_perform_write()
202 		ret = balance_dirty_pages_ratelimited_flags(mapping, bdp_flags);  in netfs_perform_write()
224 		folio = netfs_grab_folio_for_write(mapping, pos, part);  in netfs_perform_write()
273 			ret = filemap_write_and_wait_range(mapping, from, to);  in netfs_perform_write()
279 		if (mapping_writably_mapped(mapping))  in netfs_perform_write()
563 static void netfs_kill_pages(struct address_space *mapping,  in netfs_kill_pages()  argument
575 		folio = filemap_get_folio(mapping, index);  in netfs_kill_pages()
589 		generic_error_remove_folio(mapping, folio);  in netfs_kill_pages()
601 static void netfs_redirty_pages(struct address_space *mapping,  in netfs_redirty_pages()  argument
613 		folio = filemap_get_folio(mapping, index);  in netfs_redirty_pages()
621 		filemap_dirty_folio(mapping, folio);  in netfs_redirty_pages()
628 	balance_dirty_pages_ratelimited(mapping);  in netfs_redirty_pages()
638 	struct address_space *mapping = wreq->mapping;  in netfs_pages_written_back()  local
645 	XA_STATE(xas, &mapping->i_pages, wreq->start / PAGE_SIZE);  in netfs_pages_written_back()
720 	struct address_space *mapping = wreq->mapping;  in netfs_cleanup_buffered_write()  local
741 		netfs_redirty_pages(mapping, wreq->start, wreq->len);  in netfs_cleanup_buffered_write()
751 		netfs_kill_pages(mapping, wreq->start, wreq->len);  in netfs_cleanup_buffered_write()
756 		mapping_set_error(mapping, wreq->error);  in netfs_cleanup_buffered_write()
768 static void netfs_extend_writeback(struct address_space *mapping,  in netfs_extend_writeback()  argument
891 static ssize_t netfs_write_back_from_locked_folio(struct address_space *mapping,  in netfs_write_back_from_locked_folio()  argument
901 	struct netfs_inode *ctx = netfs_inode(mapping->host);  in netfs_write_back_from_locked_folio()
910 	wreq = netfs_alloc_request(mapping, NULL, start, folio_size(folio),  in netfs_write_back_from_locked_folio()
951 			netfs_extend_writeback(mapping, group, xas, &count, start,  in netfs_write_back_from_locked_folio()
974 		iov_iter_xarray(&wreq->iter, ITER_SOURCE, &mapping->i_pages, start,  in netfs_write_back_from_locked_folio()
984 		fscache_clear_page_bits(mapping, start, len, caching);  in netfs_write_back_from_locked_folio()
997 static ssize_t netfs_writepages_begin(struct address_space *mapping,  in netfs_writepages_begin()  argument
1057 	 * the page may be truncated or invalidated (changing page->mapping to  in netfs_writepages_begin()
1059 	 * mapping  in netfs_writepages_begin()
1071 	if (folio->mapping != mapping ||  in netfs_writepages_begin()
1100 	ret = netfs_write_back_from_locked_folio(mapping, wbc, group, xas,  in netfs_writepages_begin()
1112 static int netfs_writepages_region(struct address_space *mapping,  in netfs_writepages_region()  argument
1120 	XA_STATE(xas, &mapping->i_pages, *_start / PAGE_SIZE);  in netfs_writepages_region()
1123 		ret = netfs_writepages_begin(mapping, wbc, group, &xas,  in netfs_writepages_region()
1135 int netfs_writepages(struct address_space *mapping,  in netfs_writepages()  argument
1149 	if (wbc->range_cyclic && mapping->writeback_index) {  in netfs_writepages()
1150 		start = mapping->writeback_index * PAGE_SIZE;  in netfs_writepages()
1151 		ret = netfs_writepages_region(mapping, wbc, group,  in netfs_writepages()
1157 			mapping->writeback_index = start / PAGE_SIZE;  in netfs_writepages()
1162 		end = mapping->writeback_index * PAGE_SIZE;  in netfs_writepages()
1163 		mapping->writeback_index = 0;  in netfs_writepages()
1164 		ret = netfs_writepages_region(mapping, wbc, group, &start, end);  in netfs_writepages()
1166 			mapping->writeback_index = start / PAGE_SIZE;  in netfs_writepages()
1169 		ret = netfs_writepages_region(mapping, wbc, group,  in netfs_writepages()
1172 			mapping->writeback_index = start / PAGE_SIZE;  in netfs_writepages()
1175 		ret = netfs_writepages_region(mapping, wbc, group,  in netfs_writepages()
1192 		mapping_set_error(wreq->mapping, wreq->error);  in netfs_cleanup_launder_folio()
1206 	struct address_space *mapping = folio->mapping;  in netfs_launder_folio()  local
1210 	unsigned long long i_size = i_size_read(mapping->host);  in netfs_launder_folio()
1224 	wreq = netfs_alloc_request(mapping, NULL, start, len, NETFS_LAUNDER_WRITE);  in netfs_launder_folio()