Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annotations

[Peter Zijlstra]

On Wed, 2010-05-12 at 16:00 -0700, Paul E. McKenney wrote:
> Any thoughts?  One approach would be to create a separate lockdep class
> for vhost workqueue state, similar to the approach used in instrument
> rcu_read_lock() and friends. 

workqueue_struct::lockdep_map, its held while executing worklets.

lock_is_held(&vhost_workqueue->lockdep_map), should do as you want.
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