[PATCH 2/2] nvme-multipath: don't block on blk_queue_enter of the underlying device

[Sagi Grimberg]

>>>> The deadlock in this patchset reproduces upstream. It is not possible to
>>>> update the kernel in the env in the original report.
>>>>
>>>> So IFF we assume that this does not reproduce in upstream (pending
>>>> proof), is there something that we can do with stable fixes? This will
>>>> probably go back to everything that is before 5.8...
>>>
>>> The direct_make_request removal should be pretty easily backportable.
>>
>> Umm, the direct_make_request removal is based on the submit_bio_noacct
>> rework you've done. Are you suggesting that we replace it with
>> generic_make_request for these kernels?
> 
> Yes.

OK, that should be testable...