[PATCH] workqueue: Fix memory ordering race in queue_work*()

[Herbert Xu]

Tejun Heo <tj at kernel.org> wrote:
> 
> Oh, tricky one and yeah you're absolutely right that it makes no sense to
> not guarantee barrier semantics when already pending. I didn't even know
> test_and_set_bit() wasn't a barrier when it failed. Thanks a lot for hunting
> down and fixing this. Applied to wq/for-6.0-fixes.

Please revert this as test_and_set_bit was always supposed to be
a full memory barrier.  This is an arch bug.

Cheers,
-- 
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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