From: Omar Sandoval <osandov@fb.com>
Date: Thu, 17 Jan 2019 01:34:19 +0000 (-0800)
Subject: cgroup: test if CGROUP2_DIR is set with -v instead of -n
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=8a274578e2895b9f0b66c09f3a8f63b5ff1293b2;p=users%2Fsagi%2Fblktests.git

cgroup: test if CGROUP2_DIR is set with -v instead of -n

common/multipath-over-rdma does set -u, so -n "$CGROUP2_DIR" fails with
an unbound variable error. Instead, use -v to test if the variable was
set.

Signed-off-by: Omar Sandoval <osandov@fb.com>
---

diff --git a/common/cgroup b/common/cgroup
index 48e546f..554ebf7 100644
--- a/common/cgroup
+++ b/common/cgroup
@@ -22,7 +22,7 @@ _init_cgroup2()
 
 _exit_cgroup2()
 {
-	if [[ -n $CGROUP2_DIR ]]; then
+	if [[ -v CGROUP2_DIR ]]; then
 		find "$CGROUP2_DIR" -type d -delete
 		unset CGROUP2_DIR
 	fi