From 6f66f5a75a274cf44e7cafe1b6f1b1f681442af8 Mon Sep 17 00:00:00 2001
From: Percy Wegmann <percy@tailscale.com>
Date: Wed, 6 Mar 2024 12:29:20 -0600
Subject: [PATCH] ipn: add comment about thread-safety to StateStore

Updates #cleanup

Signed-off-by: Percy Wegmann <percy@tailscale.com>
---
 ipn/store.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ipn/store.go b/ipn/store.go
index 84ae00dd2..550aa8cba 100644
--- a/ipn/store.go
+++ b/ipn/store.go
@@ -72,6 +72,7 @@ func CurrentProfileKey(userID string) StateKey {
 }
 
 // StateStore persists state, and produces it back on request.
+// Implementations of StateStore are expected to be safe for concurrent use.
 type StateStore interface {
 	// ReadState returns the bytes associated with ID. Returns (nil,
 	// ErrStateNotExist) if the ID doesn't have associated state.