Re: [PATCH] libata, freezer: avoid block device removal while systemis frozen

[Tejun Heo]

On Wed, Dec 18, 2013 at 04:39:36PM -0500, Tejun Heo wrote:
> Yeah, we can just rip out the whole freezer support and let the
> caller's pm notification hooks implement it by doing
> 
> 	workqueue_set_max_active(wq, 0);
> 	flush_workqueue(wq);

Oops, the above doesn't work but I can trivially add a new interface
for this.  Something which waits for the max_active to drop below the
newly set level before returning.

	workqueue_set_max_active_and_wait(wq, 0);

Thanks.

-- 
tejun
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