Re: [PATCH] debug workqueue flushing deadlocks with lockdep

[Peter Zijlstra]

On Wed, 2007-07-04 at 21:34 +0200, Johannes Berg wrote:
> This patch adds a fake lock to each workqueue in order to debug things
> where you have something like
> 
>   my_function() -> lock(); ...; flush_workqueue(); ...
> vs
>   run_workqueue() -> my_work() -> ...; lock(); ...
> 
> which can obviously deadlock if my_work is scheduled when my_function()
> is invoked (but hasn't locked yet.)
> 
> Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>

Acked-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>

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