Commits
J. Bruce Fields committed 3f26e68af5c
nfsd4: zero-length WRITE should succeed commit fdec6114ee1f0f43b1ad081ad8d46b23ba126d70 upstream. Zero-length writes are legal; from 5661 section 18.32.3: "If the count is zero, the WRITE will succeed and return a count of zero subject to permissions checking". This check is unnecessary and is causing zero-length reads to return EINVAL. Cc: stable@vger.kernel.org Fixes: 3fd9557aec91 "NFSD: Refactor the generic write vector fill helper" Cc: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>