On Sat 20-02-21 12:20:36, Muchun Song wrote:

On Fri, Feb 19, 2021 at 10:12 PM Michal Hocko [off-list ref] wrote:

[...]

quoted

What about hugetlb page poisoning on HW failure (resp. soft offlining)?

If the HW poisoned hugetlb page failed to be dissolved, the page
will go back to the free list with PG_HWPoison set. But the page
will not be used, because we will check whether the page is HW
poisoned when it is dequeued from the free list. If so, we will skip
this page.

Can this lead to an underprovisioned pool then? Or is there a new
hugetlb allocated to replace the poisoned one?

-- 
Michal Hocko
SUSE Labs