matthew green wrote:
>    i'd like to add an additional "lkflag" argument to VFS_VGET
>    and VFS_FHTOVP so that nfsd won't try to acquire exclusive lock
>    unnecessarily.
> 
> 
> i'm curious to when this is an issue currently?
> 

This allows the NFS server to service multiple NFS read requests
to the same file in parallel.  (and lookup, getattr ....)