ngx_http_upstream_cache_last_modified   22 src/http/ngx_http_upstream.c static ngx_int_t ngx_http_upstream_cache_last_modified(ngx_http_request_t *r,
ngx_http_upstream_cache_last_modified  389 src/http/ngx_http_upstream.c       ngx_http_upstream_cache_last_modified, 0,