target_backend_unregister
target_backend_unregister(&fileio_ops);
EXPORT_SYMBOL(target_backend_unregister);
target_backend_unregister(&iblock_ops);
target_backend_unregister(&pscsi_ops);
target_backend_unregister(&rd_mcp_ops);
target_backend_unregister(&tcmu_ops);
void target_backend_unregister(const struct target_backend_ops *);