From 1c00bb5da3a53152c5f9e0c9d3382afdec1b2455 Mon Sep 17 00:00:00 2001
From: "Bryn M. Reeves" <bmr@redhat.com>
Date: Wed, 25 Jan 2017 15:10:59 +0000
Subject: [PATCH] libdm: test for DM_STATS_GROUP_NOT_PRESENT in
 _stats_group_id_present

If the group_id passed to _stats_group_id_present is equal to the
special value DM_STATS_GROUP_NOT_PRESENT there is no need to perform
any further tests: return false immediately.
---
 libdm/libdm-stats.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libdm/libdm-stats.c b/libdm/libdm-stats.c
index 6e79a0935..f10c6d686 100644
--- a/libdm/libdm-stats.c
+++ b/libdm/libdm-stats.c
@@ -261,6 +261,9 @@ static int _stats_group_id_present(const struct dm_stats *dms, uint64_t id)
 {
 	struct dm_stats_group *group = NULL;
 
+	if (id == DM_STATS_GROUP_NOT_PRESENT)
+		return 0;
+
 	if (!dms || !dms->regions)
 		return_0;