EXTEND_CLASS
EXTEND_CLASS(override_creds, _ovl, ovl_override_creds(sb), struct super_block *sb)
EXTEND_CLASS(_name, _ext, \
EXTEND_CLASS(_name, _ext, \
EXTEND_CLASS(filename, _kernel, getname_kernel(p), const char *p)
EXTEND_CLASS(filename, _flags, getname_flags(p, f), const char __user *p, unsigned int f)
EXTEND_CLASS(filename, _uflags, getname_uflags(p, f), const char __user *p, unsigned int f)
EXTEND_CLASS(filename, _maybe_null, getname_maybe_null(p, f), const char __user *p, unsigned int f)
EXTEND_CLASS(filename, _complete_delayed, complete_getname(p), struct delayed_filename *p)