1   struct buffer_head {
       2     char *b_data;
       3   };
       4     void asfs_deletebnode( struct buffer_head *bhsec)  {
       5       if (bhsec == 0)   {
       6       void *bnc2 = (void *) bhsec->b_data;
       7       if (bnc2)       return;
       8       if (bhsec)       __brelse(bhsec);
       9     }
      10   }