Announcing the availability of cel's NFS patch series for Linux 2.6.21 
kernels.  This patch series includes the following experimental features:

     * Support for rpcbind protocol versions 3 and 4 in the Linux kernel 
RPC bind client
     * Some support for IPv6 addressing in the Linux NFS client and server
     * Removal of the BKL from the Linux NFS and RPC clients
     * Support for parsing mount option strings in the NFS client 
instead of in the user-space mount command
     * Support for separate client-side cache invalidation logic for 
each version of the NFS protocol
     * Part of a rewrite of the Linux NFS client and server XDR encoding 
and decoding routines


Please see the release notes posted here for details:

http://oss.oracle.com/~cel/linux-2.6/2.6.21/release-notes.html

The patch series is also available in the "cel-pub-2.6.21" branch of 
cel's git repository on linux-nfs.org:

http://linux-nfs.org/cgi-bin/gitweb.cgi?p=cel-2.6.git;a=shortlog;h=cel-pub-2.6.21