limit_zone_set    134 http/modules/ngx_http_limit_zone_module.c     if (r->main->limit_zone_set) {
limit_zone_set    166 http/modules/ngx_http_limit_zone_module.c     r->main->limit_zone_set = 1;
limit_zone_set    484 http/ngx_http_request.h     unsigned                          limit_zone_set:1;