Comment 1 for bug 632740

I correct myself, this suppose to work correctly even if cgroup not mounted:

--- udev.postinst.orig 2010-09-07 21:57:32.000000000 +0000
+++ udev.postinst 2010-09-07 22:46:10.000000000 +0000
@@ -78,6 +78,10 @@
       return
    fi

+ if grep -q ":/[[:alnum:]]" /proc/1/cgroup;then
+ return
+ fi
+
    rm -f /lib/udev/devices/fd
    ln -sn /proc/self/fd /lib/udev/devices/fd