From: Pavel Emelyanov <xemul@openvz.org>
Date: Tue, 11 Dec 2007 20:48:44 +0300

> Currently, this function is void, so failures in creating
> sysctls for new/renamed devices are not reported to anywhere.
> 
> Fixing this is another complex (needed?) task, but this
> return value is needed during the namespaces creation to
> handle the case, when we failed to create "all" and "default"
> entries.
> 
> Signed-off-by: Pavel Emelyanov <xemul@openvz.org>

Applied.