[NETLINK] periodically rehash table, why?

[Holger Eitzenberger]

Hi,

in nl_pid_hash_dilute() there is:

   if (unlikely(avg > 1) && nl_pid_hash_rehash(hash, 1))
      return 1;

      if (unlikely(len > avg) && time_after(jiffies, hash->rehash_time)) {
         nl_pid_hash_rehash(hash, 0);
         return 1;
      }

I don't see a reason why periodically rehashing might help in any way
(without resizing).  Is there a reason for that?

Thanks.  /holger
      



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