+barrier=1 This enables/disables barriers. barrier=0 disables it,
+ barrier=1 enables it.
+
+orlov (*) This enables the new Orlov block allocator. It's
+ enabled by default.
+
+oldalloc This disables the Orlov block allocator and
+ enables the old block allocator. Orlov should
+ have better performance, we'd like to get some
+ feedback if it's the contrary for you.
+
+user_xattr (*) Enables POSIX Extended Attributes. It's enabled by
+ default, however you need to confifure its support
+ (CONFIG_EXT2_FS_XATTR). This is neccesary if you want
+ to use POSIX Acces Control Lists support. You can visit
+ http://acl.bestbits.at to know more about POSIX Extended
+ attributes.
+
+nouser_xattr Disables POSIX Extended Attributes.
+
+acl (*) Enables POSIX Access Control Lists support. This is
+ enabled by default, however you need to configure
+ its support (CONFIG_EXT2_FS_POSIX_ACL). If you want
+ to know more about ACLs visit http://acl.bestbits.at
+
+noacl This option disables POSIX Access Control List support.
+