Pointed out by Oleg Nesterov <oleg@tv-sign.ru>, who in turn
got the hint from Linus.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>