Re: [PATCH 1/2] ipv6: do not hold route table lock when send ndisc probe
From: Eric Dumazet <hidden>
Date: 2012-08-24 09:44:54
On Fri, 2012-08-24 at 17:15 +0800, Cong Wang wrote:
Right... If we call dev_hold() in the work, it is possible that the work is still not scheduled to running when we unregister the device. What's more, we can't flush work here as we are holding a read lock.
You need a global list (and a single work, not one per req), so that a notifier can flush it at demand.