[bug report] blktests nvme/tcp triggered WARNING at kernel/workqueue.c:2628 check_flush_dependency+0x110/0x14c

[Christoph Hellwig]

On Sun, Jul 10, 2022 at 12:41:33PM +0300, Sagi Grimberg wrote:
> 
> > Hello
> > 
> > I reproduced this issue on the linux-block/for-next, pls help check
> > it, feel free to let me know if you need info/test, thanks.
> 
> 
> These reports are making me tired... Should we just remove
> MEM_RECLAIM from all nvme/nvmet workqueues are be done with
> it?
> 
> The only downside is that nvme reset/error-recovery will
> also be susceptible for low-memory situation...

We can't just do that.  We need to sort out the dependency chains
properly.