Merge "Relax inode usage estimate."

  """

  cmd = ["find", path, "-print"]

  output = common.RunAndCheckOutput(cmd, verbose=False)

  # increase by > 4% as number of files and directories is not whole picture.

  # increase by > 6% as number of files and directories is not whole picture.

  inodes = output.count('\n')

  spare_inodes = inodes * 4 // 100

  spare_inodes = inodes * 6 // 100

  min_spare_inodes = 12

  if spare_inodes < min_spare_inodes:

    spare_inodes = min_spare_inodes