unicode: remove the unused utf8{,n}age{min,max} functions

No actually used anywhere.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>

Author: Christoph Hellwig

fs/unicode/utf8-norm.c

@@ -391,119 +391,6 @@ static utf8leaf_t *utf8lookup(const struct utf8data *data,
 	return utf8nlookup(data, hangul, s, (size_t)-1);
 }
 
-/*
- * Maximum age of any character in s.
- * Return -1 if s is not valid UTF-8 unicode.
- * Return 0 if only non-assigned code points are used.
- */
-int utf8agemax(const struct utf8data *data, const char *s)
-{
-	utf8leaf_t	*leaf;
-	int		age = 0;
-	int		leaf_age;
-	unsigned char	hangul[UTF8HANGULLEAF];
-
-	if (!data)
-		return -1;
-
-	while (*s) {
-		leaf = utf8lookup(data, hangul, s);
-		if (!leaf)
-			return -1;
-
-		leaf_age = utf8agetab[LEAF_GEN(leaf)];
-		if (leaf_age <= data->maxage && leaf_age > age)
-			age = leaf_age;
-		s += utf8clen(s);
-	}
-	return age;
-}
-EXPORT_SYMBOL(utf8agemax);
-
-/*
- * Minimum age of any character in s.
- * Return -1 if s is not valid UTF-8 unicode.
- * Return 0 if non-assigned code points are used.
- */
-int utf8agemin(const struct utf8data *data, const char *s)
-{
-	utf8leaf_t	*leaf;
-	int		age;
-	int		leaf_age;
-	unsigned char	hangul[UTF8HANGULLEAF];
-
-	if (!data)
-		return -1;
-	age = data->maxage;
-	while (*s) {
-		leaf = utf8lookup(data, hangul, s);
-		if (!leaf)
-			return -1;
-		leaf_age = utf8agetab[LEAF_GEN(leaf)];
-		if (leaf_age <= data->maxage && leaf_age < age)
-			age = leaf_age;
-		s += utf8clen(s);
-	}
-	return age;
-}
-EXPORT_SYMBOL(utf8agemin);
-
-/*
- * Maximum age of any character in s, touch at most len bytes.
- * Return -1 if s is not valid UTF-8 unicode.
- */
-int utf8nagemax(const struct utf8data *data, const char *s, size_t len)
-{
-	utf8leaf_t	*leaf;
-	int		age = 0;
-	int		leaf_age;
-	unsigned char	hangul[UTF8HANGULLEAF];
-
-	if (!data)
-		return -1;
-
-	while (len && *s) {
-		leaf = utf8nlookup(data, hangul, s, len);
-		if (!leaf)
-			return -1;
-		leaf_age = utf8agetab[LEAF_GEN(leaf)];
-		if (leaf_age <= data->maxage && leaf_age > age)
-			age = leaf_age;
-		len -= utf8clen(s);
-		s += utf8clen(s);
-	}
-	return age;
-}
-EXPORT_SYMBOL(utf8nagemax);
-
-/*
- * Maximum age of any character in s, touch at most len bytes.
- * Return -1 if s is not valid UTF-8 unicode.
- */
-int utf8nagemin(const struct utf8data *data, const char *s, size_t len)
-{
-	utf8leaf_t	*leaf;
-	int		leaf_age;
-	int		age;
-	unsigned char	hangul[UTF8HANGULLEAF];
-
-	if (!data)
-		return -1;
-	age = data->maxage;
-	while (len && *s) {
-		leaf = utf8nlookup(data, hangul, s, len);
-		if (!leaf)
-			return -1;
-		leaf_age = utf8agetab[LEAF_GEN(leaf)];
-		if (leaf_age <= data->maxage && leaf_age < age)
-			age = leaf_age;
-		len -= utf8clen(s);
-		s += utf8clen(s);
-	}
-	return age;
-}
-EXPORT_SYMBOL(utf8nagemin);
-
 /*
  * Length of the normalization of s.
  * Return -1 if s is not valid UTF-8 unicode.

fs/unicode/utf8n.h

@@ -33,22 +33,6 @@ int utf8version_is_supported(unsigned int version);
 extern const struct utf8data *utf8nfdi(unsigned int maxage);
 extern const struct utf8data *utf8nfdicf(unsigned int maxage);
 
-/*
- * Determine the maximum age of any unicode character in the string.
- * Returns 0 if only unassigned code points are present.
- * Returns -1 if the input is not valid UTF-8.
- */
-extern int utf8agemax(const struct utf8data *data, const char *s);
-extern int utf8nagemax(const struct utf8data *data, const char *s, size_t len);
-
-/*
- * Determine the minimum age of any unicode character in the string.
- * Returns 0 if any unassigned code points are present.
- * Returns -1 if the input is not valid UTF-8.
- */
-extern int utf8agemin(const struct utf8data *data, const char *s);
-extern int utf8nagemin(const struct utf8data *data, const char *s, size_t len);
-
 /*
  * Determine the length of the normalized from of the string,
  * excluding any terminating NULL byte.