Introduction to lockd patches

Subject: Introduction to lockd patches

This set of patches does various cleanups in the lockd code, adds the ability to use the client host name instead of the IP address (which is something the HA folks asked us for), and the ability to switch between the user space rpc.statd and a new kernel statd implementation.

The latter needs a separate user space utility named sm-notify that sends out the NSM_NOTIFY calls at boot. The utility is available from ftp://ftp.lst.de/pub/people/okir/sm-notify.

This code has been in several Suse releases. I forward ported this to 2.6.18-rc3 and made sure it compiles. I have *not* done any testing yet, as I ran out of time (I'm leaving for vacation tomorrow). I wanted to post this code for your review nevertheless, since I promised Steve Dickson I'd do that :)

If the kernel statd code is too controversial, I'm fine with keeping that in the suse tree a little longer. But I do believe it makes things a lot easier for users (one configuration mistake less); and it also makes the code simpler (no more funky upcalls to user land).

Note that both the use of hostnames instead of addresses, and the use of kernel statd, are switchable, and default to off.

Olaf

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