#restorecon -R / ; operation not support

[casinee app]

Hi,
when i execute #restorecon -R / , all the output is "... operation not
support".  I had check the source code, and in
linux/security/selinux/hooks.c :
         ...
sbsec = inode->i_sb->s_security;
if (!(sbsec->flags & SE_SBLABELSUPP))
{
return -EOPNOTSUPP;
}
        ...
it returned. The  SE_SBLABELSUPP defined as 0x40, i want to know how can i
do to make the filesystem to support the SecurityContext of selinux.
Thanks.
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