Why vfs_stdcheckexp is a VFS operation?

[Andrey Simonenko]

On Wed, Aug 29, 2012 at 08:59:11AM -0400, Rick Macklem wrote:
> 
> It seems that changing the semantics of /etc/exports is very difficult
> (it's a stumbling block w.r.t. adoption of nfse, as an example) at this
> time so, although confusing, exporting a directory that is not a mount
> point results in the entire mount point exported for NFS RPCs, but a
> restriction of only mounting that directory is enforced for the Mount
> protocol (only done at mount time and only for NFSv3).
> 

Which information is the statement about semantics of exports(5) and
nfse is based on?