common/rc: set maximum label length for ext4

Set maximum label length for ext4 in _label_get_max() to be able to test
online file system label set/get ioctls.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

diff --git a/common/rc b/common/rc
index bc4a4559a8ba59fda6320d237083cfad3162912c..a3b941251d389061959736febfd3ee8c5ccf0982 100644 (file)
--- a/common/rc
+++ b/common/rc
@@ -4610,6 +4610,9 @@ _label_get_max()
        f2fs)
                echo 255
                ;;
+       ext2|ext3|ext4)
+               echo 16
+               ;;
        *)
                _notrun "$FSTYP does not define maximum label length"
                ;;