Bug#587905: works with test build of linux-image-2.6.32-5-openvz-amd64_2.6.32-31_amd64

[Christian Hofstädtler <christian@hofstaedtler.name>]

I no longer have hardware to test this on, but I'm told that a default
setup of ext4 + openvz works now with maks' test build of
linux-image-2.6.32-5-openvz-amd64_2.6.32-31_amd64.

Unsure if the OOPS still occurs when someone turns on delalloc, but at
least it doesn't for the default case now.

  Christian