[PATCH v4 3/3] Btrfs-progs: fix cmd_label_usage to reflect this change.

[Jeff Liu <jeff.liu@oracle.com>]

Fix the command usage of "btrfs filesystem label" to reflect this change. i.e. so that
we can get/set the label of a mounted filesystem against the mountpoint.

Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>

---
 cmds-filesystem.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cmds-filesystem.c b/cmds-filesystem.c
index 9c43d35..5770d8b 100644
--- a/cmds-filesystem.c
+++ b/cmds-filesystem.c
@@ -517,8 +517,8 @@ static int cmd_resize(int argc, char **argv)
 }
 
 static const char * const cmd_label_usage[] = {
-	"btrfs filesystem label <device> [<newlabel>]",
-	"Get or change the label of an unmounted filesystem",
+	"btrfs filesystem label [<device>|<mountpoint>] [<newlabel>]",
+	"Get or change the label of a filesystem",
 	"With one argument, get the label of filesystem on <device>.",
 	"If <newlabel> is passed, set the filesystem label to <newlabel>.",
 	NULL
-- 
1.7.9.5