ngx_http_file_cache_create  128 http/ngx_http_cache.h ngx_int_t ngx_http_file_cache_create(ngx_http_request_t *r);
ngx_http_file_cache_create 2154 http/ngx_http_upstream.c             if (ngx_http_file_cache_create(r) != NGX_OK) {