From: WANG Cong <redacted>
Date: Fri, 2 May 2008 13:35:55 +0800 (CST)

As suggested by Herbert Xu, using workqueue is better than timer
for net/xfrm/xfrm_policy.c, so replace them with delayed_work.
And due to this change, we have to disable BH when trying to
lock.

Note that, this patch is not fully tested, so should be
in -mm first.

Signed-off-by: WANG Cong <redacted>

Please let me know when these two patches have gotten some
good testing.