kern/{h,s}list: add type declarations to public headers

This change merely documents the types as part of the public interface
of the respective modules.

1 files changed, 4 insertions, 0 deletions

diff --git a/kern/hlist.h b/kern/hlist.h
index eec05bb5..e105cb85 100644
--- a/kern/hlist.h
+++ b/kern/hlist.h
@@ -28,6 +28,10 @@
 #include <kern/llsync.h>
 #include <kern/macros.h>
 
+struct hlist;
+
+struct hlist_node;
+
 /*
  * Static list initializer.
  */