user_xattr Enable "user." POSIX Extended Attributes
(requires CONFIG_EXT2_FS_XATTR).
- See also http://acl.bestbits.at
nouser_xattr Don't support "user." extended attributes.
acl Enable POSIX Access Control Lists support
(requires CONFIG_EXT2_FS_POSIX_ACL).
- See also http://acl.bestbits.at
noacl Don't support POSIX ACLs.
nobh Do not attach buffer_heads to file pagecache.