[CentOS] Availability of unsupported kernel for 4.2 or compiling reiser into 4.2 kernel

Two related questions.

1. When is the unsupported version of 2.6.9.22 likely to be available? 
   I need to access reiser filesystems so I’m currently running on the
.11unsupported kernel.

2. Has anyone successfully compiled reiser into the 2.6.9.22 kernel? 
   I am getting errors in stree.c but I can’t find a solution on the net?

Thanks

Daveh