NFSv4: Turn off open-by-filehandle and NFS re-export for NFSv4.0
[ Upstream commit 2a9d683b ] The NFSv4.0 protocol only supports open() by name. It cannot therefore be used with open_by_handle() and friends, nor can it be re-exported by knfsd. Reported-by: Chuck Lever III <chuck.lever@oracle.com> Fixes: 20fa1902 ("nfs: add export operations") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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