.

go/neo/mastered.go

@@ -217,6 +217,13 @@ type _MasterLink struct {
 //
 // Must be called only when master link is established - e.g. from under TalkMaster.
 func (mlink *_MasterLink) Recv1(ctx context.Context) (neonet.Request, error) {
+	// XXX this implementation assumes that Recv1 user is serial
+	// XXX if the client code (that is run from under talkMaster1) becomes
+	//     not serial and calls multiple Recv1 in parallel, the order of
+	//     recvδstate calls might become different compared to the order of
+	//     from-M messages -> corrupt tables.
+	//
+	// (for now both users - client and storage - call mlink.Recv1 serially)
 	for {
 		req, err := mlink.NodeLink.Recv1() // XXX cancel on ctx
 		if err != nil {