Re: s390 common I/O layer locking

Christoph Hellwig
2021-07-24T13:24:04Z

On Tue, May 04, 2021 at 05:10:42PM +0200, Vineeth Vijayan wrote:
>> For the css bus, we need locking for the event callbacks; for irq, this
>> may interact with the subchannel lock and likely needs some care.
>>
>> I also looked at the other busses in the common I/O layer: scm looks
>> good at a glance, ccwgroup and ccw have locking for online/offline; the
>> other callbacks for the ccw drivers probably need to take the device
>> lock as well.
>>
>> Common I/O layer maintainers, does that look right?
>>
> I just had a quick glance on the CIO layer drivers. And at first look, you
> are right.
> It looks likewe need modifications in the event callbacks (referring css
> here)
> Let me go thoughthis thoroughly and update.

Did this go anywhere?