Update diskdata.py
Added comment
@@ -142,6 +142,7 @@ class Py3status:
if (disk and line.startswith(disk)) or (disk is None and line.startswith('/dev/')):
data = line.split()
if data[0] in devs:
+ # Make sure to count each block device only one time
continue
total += int(data[1]) / 1024 / 1024
used += int(data[2]) / 1024 / 1024
