how could this ever have worked?

CHANGES

@@ -13,6 +13,7 @@
   buffer_getline is now a function, not a macro
   add iob_write (send io batch through callback, e.g. for SSL)
   add errmsg_info and errmsg_infosys to write to stdout instead
+  epoll fix
 
 0.20:
   add errmsg API

io/io_dontwantread.c

@@ -26,7 +26,7 @@ void io_dontwantread(int64 d) {
 #ifdef HAVE_EPOLL
   if (io_waitmode==EPOLL) {
     struct epoll_event x;
-    x.events=EPOLLIN;
+    x.events=0;
     if (e->wantwrite) x.events|=EPOLLOUT;
     x.data.fd=d;
     epoll_ctl(io_master,newfd?EPOLL_CTL_DEL:EPOLL_CTL_MOD,d,&x);

io/io_dontwantwrite.c

@@ -26,7 +26,7 @@ void io_dontwantwrite(int64 d) {
 #ifdef HAVE_EPOLL
   if (io_waitmode==EPOLL) {
     struct epoll_event x;
-    x.events=EPOLLOUT;
+    x.events=0;
     if (e->wantread) x.events|=EPOLLIN;
     x.data.fd=d;
     epoll_ctl(io_master,newfd?EPOLL_CTL_DEL:EPOLL_CTL_MOD,d,&x);