code: func parseMountTable(filter FilterFunc) ([]*Info, error) {
  	f, err := os.Open("/proc/self/mountinfo")
  	if err != nil {
  		return nil, err
  	}
  	defer f.Close()
  
  	return parseInfoFile(f, filter)
  }
docs: // Parse /proc/self/mountinfo because comparing Dev and ino does not work from
  // bind mounts