[PATCH rfc 1/2] nvme: support smart read-only critical warning event

[Sagi Grimberg]

>> 2. handle the event in the kernel, issue the log page with retain bit on
>> and only then notify userspace.
> 
> The retain bit is a new optional feature in nvme 1.3.  I fear we
> won't see all that many controllers respecting it.

Well, for those devices user-space will see a cleared log
page...

Unless you prefer option 1? Or have a better idea?