[PATCH] Improved hash director behavior

[Poul-Henning Kamp]

In message <4F5E1478.9090107 at wavecdn.com>, WaveCDN Development writes:
>This patch improves the behavior of the hash director when some of its 
>backends get unhealty. The hash range of each unhealthy backend is 
>splitted and mapped to the remaining healthy backends. Thus, not the 
>complete hash range is beeing remapped and backends will perform better.

Sorry about the delay.

I have done it slightly differently in [master] 0352ea2...

Feel free to yell at me if that is not good enough.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.