other/overlayfs: don't use the shell-job option

Jenkins runs all tests in a new session without a control terminal.
Signed-off-by: Andrew Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/overlayfs/Makefile

@@ -3,4 +3,4 @@ run:
 
 clean:
 	umount -f overlay_test/z
-	rm -rf overlay_test
+	rm -rf overlay_test output checkpoint

test/overlayfs/run.sh

@@ -6,7 +6,7 @@ CRIU=../../../criu
 
 setup() {
 	setup_mount
-	sleep 10 3>z/file &
+	setsid sleep 10 3>z/file < /dev/null &> output &
 	PROC_PID=$!
 	echo "PROC_PID=$PROC_PID"
 	sleep 1
@@ -21,13 +21,13 @@ setup_mount() {
 
 check_criu() {
 	echo "Dumping $PROC_PID..."
-	if ! $CRIU dump -D checkpoint --shell-job -t "${PROC_PID}"; then
+	if ! $CRIU dump -D checkpoint -t "${PROC_PID}"; then
 		echo "ERROR! dump failed"
 		return 1
 	fi
 
 	echo "Restoring..."
-	if ! $CRIU restore -d -D checkpoint --shell-job; then
+	if ! $CRIU restore -d -D checkpoint; then
 		echo "ERROR! restore failed"
 		return 1
 	fi