kernel support for open share modes

[Michael B Allen]

J. Bruce Fields said:
> I can make sense of that statement only if I read "network filesystem"
> to mean "network filesystem that implements Windows ACLs and share
> locks."  None of this is a problem for, e.g., a userspace NFSv3
> server--as it uses POSIX ACLs and locks, it can rely on the kernel to do
> all the necessary checks atomically for it.

True. NFS basically exposes a subset of POSIX so it should work just fine
in userspace yes.

Mike