generic_atomic_write_valid
ret = generic_atomic_write_valid(iocb, from);
ret = generic_atomic_write_valid(iocb, from);
EXPORT_SYMBOL_GPL(generic_atomic_write_valid);
ret = generic_atomic_write_valid(iocb, from);
int generic_atomic_write_valid(struct kiocb *iocb, struct iov_iter *iter);