directio

diff --git a/src/core/ngx_open_file_cache.h b/src/core/ngx_open_file_cache.h
index 4d8393b..1e1a279 100644
--- a/src/core/ngx_open_file_cache.h
+++ b/src/core/ngx_open_file_cache.h

@@ -17,6 +17,7 @@
     ngx_file_uniq_t          uniq;
     time_t                   mtime;
     off_t                    size;
+    off_t                    directio;
     ngx_err_t                err;
 
     time_t                   valid;