--- zzzz-none-000/linux-3.10.107/fs/f2fs/hash.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/fs/f2fs/hash.c	2021-02-04 17:41:59.000000000 +0000
@@ -42,7 +42,8 @@
 	buf[1] += b1;
 }
 
-static void str2hashbuf(const char *msg, size_t len, unsigned int *buf, int num)
+static void str2hashbuf(const unsigned char *msg, size_t len,
+				unsigned int *buf, int num)
 {
 	unsigned pad, val;
 	int i;
@@ -69,15 +70,16 @@
 		*buf++ = pad;
 }
 
-f2fs_hash_t f2fs_dentry_hash(const char *name, size_t len)
+f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info)
 {
 	__u32 hash;
 	f2fs_hash_t f2fs_hash;
-	const char *p;
+	const unsigned char *p;
 	__u32 in[8], buf[4];
+	const unsigned char *name = name_info->name;
+	size_t len = name_info->len;
 
-	if ((len <= 2) && (name[0] == '.') &&
-		(name[1] == '.' || name[1] == '\0'))
+	if (is_dot_dotdot(name_info))
 		return 0;
 
 	/* Initialize the default seed for the hash checksum functions */