Re: [PATCH v4 0/2] workqueue: Add warnings and check WQ flags usage

[Tejun Heo]

On Mon, Jun 01, 2026 at 07:12:28AM +0900, Tetsuo Handa wrote:
> I've spent more than one year for updating all in-tree users who are
> flushing kernel global workqueues. Please see a message from Linus at
> https://lkml.kernel.org/r/CAHk-=whWreGjEQ6yasspzBrNnS7EQiL+SknToWt=SzUh4XomyQ@xxxxxxxxxxxxxx .
> 
> Please never try to emit WARNING: or BUG: message just for letting developers
> update their code. If you can't use panic() instead of WARN*() or BUG*(), you
> should not use WARN*() or BUG*(). The patch author who changes the behavior of
> in-tree code is responsible for updating all in-tree code.

I don't think a statement this blanket makes sense. I scanned the existing
linux-next tree and there were a handful that were missed (I didn't find out
whether they are new ones in linux-next or ones that were misseds from
mainline tho). Let's just apply the nvme-tcp patch and move on.

Thanks.

-- 
tejun