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-rw-r--r--src/sync/rwmutex.go3
-rw-r--r--src/sync/rwmutex_test.go3
2 files changed, 6 insertions, 0 deletions
diff --git a/src/sync/rwmutex.go b/src/sync/rwmutex.go
index 94889149a1..cb2dfe1ad8 100644
--- a/src/sync/rwmutex.go
+++ b/src/sync/rwmutex.go
@@ -10,6 +10,9 @@ import (
"unsafe"
)
+// There is a modified copy of this file in runtime/rwmutex.go.
+// If you make any changes here, see if you should make them there.
+
// An RWMutex is a reader/writer mutual exclusion lock.
// The lock can be held by an arbitrary number of readers or a single writer.
// The zero value for a RWMutex is an unlocked mutex.
diff --git a/src/sync/rwmutex_test.go b/src/sync/rwmutex_test.go
index 0436f97239..9ee8864ceb 100644
--- a/src/sync/rwmutex_test.go
+++ b/src/sync/rwmutex_test.go
@@ -14,6 +14,9 @@ import (
"testing"
)
+// There is a modified copy of this file in runtime/rwmutex_test.go.
+// If you make any changes here, see if you should make them there.
+
func parallelReader(m *RWMutex, clocked, cunlock, cdone chan bool) {
m.RLock()
clocked <- true