--- libev/ev.c	2019/06/23 02:02:24	1.493
+++ libev/ev.c	2019/06/23 23:28:45	1.494
@@ -2809,7 +2809,9 @@
 #endif
 
   /* TODO: linuxaio is very experimental */
+#if !EV_RECOMMEND_LINUXAIO
   flags &= ~EVBACKEND_LINUXAIO;
+#endif
 
   return flags;
 }