--- a/include/linux/magic.h	Thu Apr 09 12:06:38 2009 +0200
+++ b/include/linux/magic.h	Thu Apr 09 12:07:21 2009 +0200
@@ -10,10 +10,13 @@
 #define SYSFS_MAGIC		0x62656572
 #define SECURITYFS_MAGIC	0x73636673
 #define TMPFS_MAGIC		0x01021994
+#define SQUASHFS_MAGIC		0x73717368
 #define EFS_SUPER_MAGIC		0x414A53
 #define EXT2_SUPER_MAGIC	0xEF53
 #define EXT3_SUPER_MAGIC	0xEF53
+#define XENFS_SUPER_MAGIC	0xabba1974
 #define EXT4_SUPER_MAGIC	0xEF53
+#define BTRFS_SUPER_MAGIC	0x9123683E
 #define HPFS_SUPER_MAGIC	0xf995e849
 #define ISOFS_SUPER_MAGIC	0x9660
 #define JFFS2_SUPER_MAGIC	0x72b6