_copy_to_iter
return _copy_to_iter(addr, bytes, i);
} else if (_copy_to_iter(buf, tsz, iter) != tsz) {
size_t _copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i);
return _copy_to_iter(addr, bytes, i);
#define _copy_mc_to_iter _copy_to_iter
EXPORT_SYMBOL(_copy_to_iter);
n = _copy_to_iter(kaddr + offset, n, i);