Ceph » CephFS

The following warning appears during make. Here roll_die and empty() returns bool. This can be easily fixed by removing the value 0.9. But I think this can better be fixed by the person who wrote it, so that the below 'ascend' and 'descend' logic can be preserved.

SyntheticClient.cc: In member function ‘int SyntheticClient::random_walk(int)’:
SyntheticClient.cc:2659:11: warning: ‘*’ in boolean context, suggest ‘&&’ instead [-Wint-in-bool-context]
     if (.9*roll_die(::pow((double).9,(double)cwd.depth())) && !subdirs.empty()) {

    // ascend?                                                                                                                          
    if (cwd.depth() && !roll_die(::pow((double).9, (double)cwd.depth()))) {
      dout(DBL) << "die says up" << dendl;
      up();
      continue;
    }

    // descend?                                                                                                                         
    if (.9*roll_die(::pow((double).9,(double)cwd.depth())) && !subdirs.empty()) {
      string s = get_random_subdir();
      cwd.push_dentry( s );
      dout(DBL) << "cd " << s << " -> " << cwd << dendl;
      clear_dir();
      continue;
    }