From b7f3787af1d93d1c10e903f9c8b0ba5803590892 Mon Sep 17 00:00:00 2001
From: Paul Bone <pbone@mozilla.com>
Date: Tue, 3 Sep 2019 06:32:09 +0000
Subject: [PATCH] Bug 1568410 - (part 10) Clarify an edge case in a comment
 r=jandem

Differential Revision: https://phabricator.services.mozilla.com/D43006

--HG--
extra : moz-landing-system : lando
---
 js/src/vm/MutexIDs.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/js/src/vm/MutexIDs.h b/js/src/vm/MutexIDs.h
index 7cf67634d731..b7922f8e1d74 100644
--- a/js/src/vm/MutexIDs.h
+++ b/js/src/vm/MutexIDs.h
@@ -12,7 +12,8 @@
 // Central definition point for mutex ordering.
 //
 // Mutexes can only be acquired in increasing order. This prevents the
-// possibility of deadlock.
+// possibility of deadlock. Mutexes with the same order cannot be held
+// at the same time.
 
 #define FOR_EACH_MUTEX(_)             \
   _(TestMutex, 100)                   \