For Linux kernel >= 5.0 patch dorimanx#145

MS_toSB_macros.patch
to fix compile problem like:
/build/source/exfat_core.c: In function 'fs_error':
/build/source/exfat_core.c:1760:64: error: 'MS_RDONLY' undeclared (first use in this function); did you mean 'IS_RDONLY'?
  else if ((opts->errors == EXFAT_ERRORS_RO) && !(sb->s_flags & MS_RDONLY)) {
                                                                ^~~~~~~~~
                                                                IS_RDONLY

exfat_core.c

@@ -1757,8 +1757,13 @@ void fs_error(struct super_block *sb)
 
 	if (opts->errors == EXFAT_ERRORS_PANIC)
 		panic("[EXFAT] Filesystem panic from previous error\n");
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,0,0)
+        else if ((opts->errors == EXFAT_ERRORS_RO) && !(sb->s_flags & SB_RDONLY)) {
+                sb->s_flags |= SB_RDONLY;
+#else
 	else if ((opts->errors == EXFAT_ERRORS_RO) && !(sb->s_flags & MS_RDONLY)) {
 		sb->s_flags |= MS_RDONLY;
+#endif
 		printk(KERN_ERR "[EXFAT] Filesystem has been set read-only\n");
 	}
 }

exfat_super.c

@@ -2080,7 +2080,11 @@ static void exfat_write_super(struct super_block *sb)
 
 	__set_sb_clean(sb);
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,0,0)
+	if (!(sb->s_flags & SB_RDONLY))
+#else
 	if (!(sb->s_flags & MS_RDONLY))
+#endif
 		FsSyncVol(sb, 1);
 
 	__unlock_super(sb);
@@ -2136,7 +2140,11 @@ static int exfat_statfs(struct dentry *dentry, struct kstatfs *buf)
 
 static int exfat_remount(struct super_block *sb, int *flags, char *data)
 {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,0,0)
+	*flags |= SB_NODIRATIME;
+#else
 	*flags |= MS_NODIRATIME;
+#endif
 	return 0;
 }
 
@@ -2489,7 +2497,11 @@ static int exfat_fill_super(struct super_block *sb, void *data, int silent)
 	mutex_init(&sbi->s_lock);
 #endif
 	sb->s_fs_info = sbi;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,0,0)
+	sb->s_flags |= SB_NODIRATIME;
+#else
 	sb->s_flags |= MS_NODIRATIME;
+#endif
 	sb->s_magic = EXFAT_SUPER_MAGIC;
 	sb->s_op = &exfat_sops;
 	sb->s_export_op = &exfat_export_ops;