utf8nlen
ssize_t utf8nlen(struct tree *, const char *, size_t);
return utf8nlen(um, n, s, (size_t)-1);
KUNIT_EXPECT_EQ(test, utf8nlen(um, UTF8_NFDI, nfdi_test_data[i].str, len),
KUNIT_EXPECT_EQ(test, utf8nlen(um, UTF8_NFDICF, nfdicf_test_data[i].str, len),
if (utf8nlen(um, UTF8_NFDI, str->name, str->len) < 0)
EXPORT_SYMBOL_GPL(utf8nlen);
ssize_t utf8nlen(const struct unicode_map *um, enum utf8_normalization n,