Re: [RFC PATCH] hwpoison, memory_hotplug: allow hwpoisoned pages to be offlined

[Michal Hocko]

On Wed 05-12-18 13:29:18, Michal Hocko wrote:
[...]
> After some more thinking I am not really sure the above reasoning is
> still true with the current upstream kernel. Maybe I just managed to
> confuse myself so please hold off on this patch for now. Testing by
> Oscar has shown this patch is helping but the changelog might need to be
> updated.

OK, so Oscar has nailed it down and it seems that 4.4 kernel we have
been debugging on behaves slightly different. The underlying problem is
the same though. So I have reworded the changelog and added "just in
case" PageLRU handling. Naoya, maybe you have an argument that would
make this void for current upstream kernels.

I have dropped all the reviewed tags as the patch has changed slightly.
Thanks a lot to Oscar for his patience and testing he has devoted to
this issue.

Btw. the way how we drop all the work on the first page that we cannot
isolate is just goofy. Why don't we simply migrate all that we already
have on the list and go on? Something for a followup cleanup though.
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