According to him, David intended to tidy them up soon, but until then they should not be used. H. J. replied with some patches, in light of the new situation, and Neil had some criticism and suggestions. H. J. thought these represented too divergent a direction, and chose a different method, closer to what he had done originally. Neil had a whole bunch of problems with H. J.'s solution, and posted a long description of problems he'd found in the latest release. There followed some further implementation discussion.
Nothing is final yet.
However, that means we have to find a way for kernel to communicate to mountd. Maybe RPC is a better choice. 1.5.x should be viewed as alpha. The production system should use 1.4.x. The current one is 1.4.7 and I am planning to make 1.4.7.1 soon.