def disk_partitions(all=False):
    """Return mounted disk partitions as a list of nameduples"""
    phydevs = []
    f = open("/proc/filesystems", "r")
    try:
        for line in f:
            if not line.startswith("nodev"):
                phydevs.append(line.strip())
    finally:
        f.close()

    retlist = []
    partitions = _psutil_linux.get_disk_partitions()
    for partition in partitions:
        device, mountpoint, fstype, opts = partition
        if device == 'none':
            device = ''
        if not all:
            if device == '' or fstype not in phydevs:
                continue
        ntuple = nt_partition(device, mountpoint, fstype, opts)
        retlist.append(ntuple)
    return retlist
Return mounted disk partitions as a list of nameduples