4f0e3fa213
r320062 used nm_rsize, nm_wsize to set the maximum request/response sizes for the NFSv4.1 session. If rsize,wsize are not specified as options, the value of nm_rsize, nm_wsize is 0 at session creation, resulting in values for request/response that are too small. This patch fixes the problem. A workaround is to specify rsize=N,wsize=N mount options explicitly, so they are set before session creation. This bug only affects NFSv4.1 mounts against some non-FreeBSD servers. MFC after: 1 week