CEPHFS_FEATURE_32BITS_RETRY_FWD
if (!test_bit(CEPHFS_FEATURE_32BITS_RETRY_FWD, &session->s_features))
bool old_version = !test_bit(CEPHFS_FEATURE_32BITS_RETRY_FWD,
CEPHFS_FEATURE_32BITS_RETRY_FWD, \