diff --git a/doc/design/assistant/inotify.mdwn b/doc/design/assistant/inotify.mdwn
index 60c598673a..8f0aebcb1f 100644
--- a/doc/design/assistant/inotify.mdwn
+++ b/doc/design/assistant/inotify.mdwn
@@ -18,6 +18,8 @@ There is a `watch` branch in git that adds the command.
   Possible fixes: 
 
   * Somehow track or detect if a file is open for write by any processes.
+    `lsof` could be used, although it would be a little slow, and not
+    avoid every possible race.
   * Or, when possible, making a copy on write copy before adding the file
     would avoid this.
   * Or, as a last resort, make an expensive copy of the file and add that.