--- a/src/http/ngx_http_cache.h
+++ b/src/http/ngx_http_cache.h
@@ -121,6 +121,7 @@ struct ngx_http_file_cache_s {
 };
 
 
+ngx_int_t ngx_http_file_cache_create(ngx_http_request_t *r);
 void ngx_http_file_cache_create_key(ngx_http_request_t *r);
 ngx_int_t ngx_http_file_cache_open(ngx_http_request_t *r);
 void ngx_http_file_cache_set_header(ngx_http_request_t *r, u_char *buf);

--- a/src/http/ngx_http_file_cache.c
+++ b/src/http/ngx_http_file_cache.c
@@ -144,6 +144,27 @@ ngx_http_file_cache_init(ngx_shm_zone_t 
 }
 
 
+ngx_int_t
+ngx_http_file_cache_create(ngx_http_request_t *r)
+{
+    ngx_http_cache_t  *c;
+
+    c = ngx_pcalloc(r->pool, sizeof(ngx_http_cache_t));
+    if (c == NULL) {
+        return NGX_ERROR;
+    }
+
+    if (ngx_array_init(&c->keys, r->pool, 4, sizeof(ngx_str_t)) != NGX_OK) {
+        return NGX_ERROR;
+    }
+
+    r->cache = c;
+    c->file.log = r->connection->log;
+
+    return NGX_OK;
+}
+
+
 void
 ngx_http_file_cache_create_key(ngx_http_request_t *r)
 {

--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -646,18 +646,10 @@ ngx_http_upstream_cache(ngx_http_request
             u->method = ngx_http_core_get_method;
         }
 
-        c = ngx_pcalloc(r->pool, sizeof(ngx_http_cache_t));
-        if (c == NULL) {
+        if (ngx_http_file_cache_create(r) != NGX_OK) {
             return NGX_ERROR;
         }
 
-        if (ngx_array_init(&c->keys, r->pool, 4, sizeof(ngx_str_t)) != NGX_OK) {
-            return NGX_ERROR;
-        }
-
-        r->cache = c;
-        c->file.log = r->connection->log;
-
         if (u->create_key(r) != NGX_OK) {
             return NGX_ERROR;
         }
@@ -668,6 +660,8 @@ ngx_http_upstream_cache(ngx_http_request
 
         u->cacheable = 1;
 
+        c = r->cache;
+
         c->min_uses = u->conf->cache_min_uses;
         c->body_start = u->conf->buffer_size;
         c->file_cache = u->conf->cache->data;