Created attachment 314575 [details]
First patch --- use timers when we need delayed wake-up.
Created attachment 314576 [details]
And the second patch: unplug the queue to avoid 3ms delay.
You can download this test kernel from http://people.redhat.com/dzickus/el5
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.