The patch is compile-tested ony and not very intrusive. It should be applied on top of the latest TTM patches.
Besides reduced CPU-usage on SMP kernels, there is the benefit of using shared code. Will also ease implementation of concurrent CS due to the deadlock prevention mechanisms. If time allows, I'll write a patch to do the same on Novueau, although Novueau does things a little differently than the other TTM-aware drivers.
