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Date:   Mon, 22 Feb 2021 10:25:26 +0100
From:   Michal Hocko <mhocko@suse.com>
To:     Muchun Song <songmuchun@bytedance.com>
Cc:     Jonathan Corbet <corbet@lwn.net>,
        Mike Kravetz <mike.kravetz@oracle.com>,
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Subject: Re: [External] Re: [PATCH v16 4/9] mm: hugetlb: alloc the vmemmap
 pages associated with each HugeTLB page
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On Sat 20-02-21 12:20:36, Muchun Song wrote:
> On Fri, Feb 19, 2021 at 10:12 PM Michal Hocko <mhocko@suse.com> wrote:
[...]
> > 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