--- a/ngx_http_slowfs_module.c	2013-03-07 17:01:55.000000000 +0400
+++ b/ngx_http_slowfs_module.c	2023-03-13 13:34:38.294577255 +0300
@@ -62,6 +62,12 @@
 ngx_int_t   ngx_http_slowfs_cache_status(ngx_http_request_t *,
                 ngx_http_variable_value_t *, uintptr_t);
 
+static void * ngx_http_slowfs_create_main_conf(ngx_conf_t *cf);
+
+typedef struct {
+    ngx_array_t                    caches;  /* ngx_http_file_cache_t * */
+} ngx_http_slowfs_main_conf_t;
+
 typedef struct {
     ngx_flag_t                 enabled;
     ngx_shm_zone_t            *cache;
@@ -108,8 +114,8 @@
     { ngx_string("slowfs_cache_path"),
       NGX_HTTP_MAIN_CONF|NGX_CONF_2MORE,
       ngx_http_file_cache_set_slot,
-      0,
-      0,
+      NGX_HTTP_MAIN_CONF_OFFSET,
+      offsetof(ngx_http_slowfs_main_conf_t, caches),
       &ngx_http_slowfs_module },
 
     { ngx_string("slowfs_cache_min_uses"),
@@ -156,7 +162,7 @@
     ngx_http_slowfs_add_variables,    /* preconfiguration */
     ngx_http_slowfs_init,             /* postconfiguration */
 
-    NULL,                             /* create main configuration */
+    ngx_http_slowfs_create_main_conf, /* create main configuration */
     NULL,                             /* init main configuration */
 
     NULL,                             /* create server configuration */
@@ -1170,6 +1176,29 @@
     return NGX_OK;
 }
 
+static void *
+ngx_http_slowfs_create_main_conf(ngx_conf_t *cf)
+{
+    ngx_http_slowfs_main_conf_t  *conf;
+
+    conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_slowfs_main_conf_t));
+    if (conf == NULL) {
+        return NULL;
+    }
+
+#if (NGX_HTTP_CACHE)
+    if (ngx_array_init(&conf->caches, cf->pool, 4,
+                       sizeof(ngx_http_file_cache_t *))
+        != NGX_OK)
+    {
+        return NULL;
+    }
+#endif
+
+    return conf;
+}
+
+
 #else /* !NGX_HTTP_CACHE */