NGX_OPEN_FILE_DIRECTIO_OFF  442 http/modules/ngx_http_log_module.c     of.directio = NGX_OPEN_FILE_DIRECTIO_OFF;
NGX_OPEN_FILE_DIRECTIO_OFF 3985 http/ngx_http_core_module.c         clcf->directio = NGX_OPEN_FILE_DIRECTIO_OFF;
NGX_OPEN_FILE_DIRECTIO_OFF  323 http/ngx_http_file_cache.c     of.directio = NGX_OPEN_FILE_DIRECTIO_OFF;