From abdc5138dfe5b85c0e476fe7a50c6d30d10b9fb9 Mon Sep 17 00:00:00 2001
From: Aaron Jacobs <jacobsa@google.com>
Date: Mon, 18 May 2015 10:21:33 +1000
Subject: [PATCH] Added documentation.

---
 mounted_file_system.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mounted_file_system.go b/mounted_file_system.go
index 082d9e8..24bfb90 100644
--- a/mounted_file_system.go
+++ b/mounted_file_system.go
@@ -65,7 +65,9 @@ type MountConfig struct {
 	// should inherit. If nil, context.Background() will be used.
 	OpContext context.Context
 
-	// TODO(jacobsa): Add comments.
+	// Mount the file system in read-only mode. File modes will appear as normal,
+	// but opening a file for writing and metadata operations like chmod,
+	// chtimes, etc. will fail.
 	ReadOnly bool
 
 	// OS X only.