page = find_lock_page(mapping, index);
if (!page) {
page = read_cache_page(mapping, index,
(filler_t*)mapping->a_ops->readpage,
NULL);
page = find_lock_page(mapping, index);
if (!page) {
page = read_cache_page(mapping, index,
(filler_t*)mapping->a_ops->readpage,
NULL);