exfat_super.c: Support kernel 4.8

Changes introduced by commits 8387ff2577e and 6fa67e707 in the kernel
prompted this change.

Signed-off-by: Evan Anderson <evananderson@thelinuxman.us>

exfat_super.c

@@ -349,7 +349,11 @@ static int exfat_d_hash(const struct dentry *dentry, const struct inode *inode,
 		struct qstr *qstr)
 #endif
 {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0)
+	qstr->hash = full_name_hash(dentry, qstr->name, exfat_striptail_len(qstr));
+#else
 	qstr->hash = full_name_hash(qstr->name, exfat_striptail_len(qstr));
+#endif
 	return 0;
 }
@@ -370,7 +374,11 @@ static int exfat_d_hashi(const struct dentry *dentry, const struct inode *inode,
 	name = qstr->name;
 	len = exfat_striptail_len(qstr);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0)
+	hash = init_name_hash(dentry);
+#else
 	hash = init_name_hash();
+#endif
 	while (len--)
 		hash = partial_name_hash(nls_upper(sb, *name++), hash);
 	qstr->hash = end_name_hash(hash);
@@ -378,7 +386,10 @@ static int exfat_d_hashi(const struct dentry *dentry, const struct inode *inode,
 	return 0;
 }
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0)
+static int exfat_cmpi(const struct dentry *dentry,
+		unsigned int len, const char *str, const struct qstr *name)
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)
 static int exfat_cmpi(const struct dentry *parent, const struct dentry *dentry,
 		unsigned int len, const char *str, const struct qstr *name)
 #elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
@@ -389,7 +400,11 @@ static int exfat_cmpi(const struct dentry *parent, const struct inode *pinode,
 		unsigned int len, const char *str, const struct qstr *name)
 #endif
 {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0)
+	struct nls_table *t = EXFAT_SB(dentry->d_sb)->nls_io;
+#else
 	struct nls_table *t = EXFAT_SB(parent->d_sb)->nls_io;
+#endif
 	unsigned int alen, blen;
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
@@ -416,8 +431,10 @@ static int exfat_cmpi(const struct dentry *parent, const struct inode *pinode,
 	}
 	return 1;
 }
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0)
+static int exfat_cmp(const struct dentry *dentry,
+		unsigned int len, const char *str, const struct qstr *name)
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)
 static int exfat_cmp(const struct dentry *parent, const struct dentry *dentry,
 		unsigned int len, const char *str, const struct qstr *name)
 #elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)