diff -urNbp nginx-mogilefs-module-master/ngx_http_mogilefs_module.c nginx-mogilefs-module/ngx_http_mogilefs_module.c
--- nginx-mogilefs-module-master/ngx_http_mogilefs_module.c	2012-10-14 21:52:03.000000000 +0600
+++ nginx-mogilefs-module/ngx_http_mogilefs_module.c	2017-07-12 08:36:46.685944104 +0500
@@ -316,9 +316,6 @@ ngx_http_mogilefs_handler(ngx_http_reque
 
     u->peer.log = r->connection->log;
     u->peer.log_error = NGX_ERROR_ERR;
-#if (NGX_THREADS)
-    u->peer.lock = &r->connection->lock;
-#endif
 
     u->output.tag = (ngx_buf_tag_t) &ngx_http_mogilefs_module;
 
@@ -745,7 +742,10 @@ ngx_http_mogilefs_create_request(ngx_htt
     ngx_buf_t                      *b;
     ngx_chain_t                    *cl;
     ngx_http_mogilefs_loc_conf_t   *mgcf;
-    ngx_str_t                       request, domain;
+#if (NGX_DEBUG)
+    ngx_str_t                       request;
+#endif
+    ngx_str_t                       domain;
     ngx_http_mogilefs_ctx_t        *ctx;
     ngx_http_mogilefs_aux_param_t  *a;
     ngx_uint_t                      i;
@@ -872,11 +872,13 @@ ngx_http_mogilefs_create_request(ngx_htt
         }
     }
 
+#if (NGX_DEBUG)
     request.data = b->pos;
     request.len = b->last - b->pos;
 
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
                    "mogilefs request: \"%V\"", &request);
+#endif
 
     *b->last++ = CR; *b->last++ = LF;
 
@@ -1538,7 +1540,7 @@ ngx_http_mogilefs_create_spare_location(
     ngx_uint_t                 i;
     ngx_http_module_t         *module;
     void                      *mconf;
-    ngx_http_core_loc_conf_t  *clcf, *pclcf, *rclcf;
+    ngx_http_core_loc_conf_t  *clcf, *rclcf;
     ngx_http_core_srv_conf_t  *cscf;
 
     ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
@@ -1573,8 +1575,6 @@ ngx_http_mogilefs_create_spare_location(
         }
     }
 
-    pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index];
-
     clcf = ctx->loc_conf[ngx_http_core_module.ctx_index];
 
     mgcf = ctx->loc_conf[ngx_http_mogilefs_module.ctx_index];