On Thu, Sep 7, 2017 at 6:41 PM, Peter Zijlstra <pet...@infradead.org> wrote: > On Thu, Sep 07, 2017 at 09:33:16AM +0900, Byungchul Park wrote: >> Workqueue added manual acquisitions to catch deadlock cases. Now >> crossrelease was introduced, some of those are redundant because >> crossrelease-enabled wait_for_completeion() also does it. Removed it. > > This does not explain how it doesn't become the regular timing dependent > stuff cross-release normally is.
Yes, I will add more explanation for it at the next spin. But, let me explain it a bit here to help you get it, since it's very simple. This has nothing to do with 'might' thing I introduced previously. For 'might' thing, I will start it after getting your response. Here, I just removed acquire() because wait_for_completion() already includes the acquire() by LOCKDEP_COMPLETIONS. That's all. -- Thanks, Byungchul
