From 2bc8a61c696e41eef27ab7ff3bcfe75d2daf573a Mon Sep 17 00:00:00 2001
From: mulhern <amulhern@redhat.com>
Date: Mon, 27 Nov 2017 10:02:43 -0500
Subject: [PATCH] dm thin: document representation of <highest mapped sector>
 when there is none

Signed-off-by: mulhern <amulhern@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---
 Documentation/device-mapper/thin-provisioning.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/device-mapper/thin-provisioning.txt b/Documentation/device-mapper/thin-provisioning.txt
index ef639960b272d..3852dade03e47 100644
--- a/Documentation/device-mapper/thin-provisioning.txt
+++ b/Documentation/device-mapper/thin-provisioning.txt
@@ -396,3 +396,6 @@ ii) Status
 	If the pool has encountered device errors and failed, the status
 	will just contain the string 'Fail'.  The userspace recovery
 	tools should then be used.
+
+    In the case where <nr mapped sectors> is 0, there is no highest
+    mapped sector and the value of <highest mapped sector> is unspecified.
-- 
2.30.2