Btrfs-progs: fix cmd_label_usage to reflect this change.

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>

diff --git a/cmds-filesystem.c b/cmds-filesystem.c
index bdbd2ee..6e0a1cf 100644 (file)
--- a/cmds-filesystem.c
+++ b/cmds-filesystem.c
@@ -497,8 +497,8 @@ 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