On Tue, Oct 22, 2019 at 10:26:11AM +0200, Michal Hocko wrote:
> On Tue 22-10-19 09:46:20, Oscar Salvador wrote:
> [...]
> > So, opposite to hard-offline, in soft-offline we do not fiddle with pages
> > unless we are sure the page is not reachable anymore by any means.
>
> I have to say I do not follow. Is there any _real_ reason for
> soft-offline to behave differenttly from MCE (hard-offline)?
Yes.
Do not take it as 100% true as I read that in some code/Documentation
a while ago.
But I think that it boils down to:
soft-offline: "We have seen some erros in the underlying page, but
it is still usable, so we have a chance to keep the
the contents (via migration)"
hard-offline: "The underlying page is dead, we cannot trust it, so
we shut it down, killing whoever is holding it
along the way".
Am I wrong Naoya?
--
Oscar Salvador
SUSE L3
