From: Lisa Wang <wyihan@google.com>
To: Jiaqi Yan <jiaqiyan@google.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>,
Naoya Horiguchi <nao.horiguchi@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Shuah Khan <shuah@kernel.org>, Hugh Dickins <hughd@google.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
David Hildenbrand <david@kernel.org>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Vlastimil Babka <vbabka@kernel.org>,
Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org, linux-kselftest@vger.kernel.org,
rientjes@google.com, seanjc@google.com, ackerleytng@google.com,
vannapurve@google.com, michael.roth@amd.com, tabba@google.com,
dave.hansen@linux.intel.com
Subject: Re: [PATCH RFC v2 1/7] mm: memory_failure: Clarify the MF_DELAYED definition
Date: Mon, 23 Mar 2026 21:18:57 +0000 [thread overview]
Message-ID: <acGuQcWRuJMO0EJY@google.com> (raw)
In-Reply-To: <CACw3F50mVpnS7TQy_pD-KV=_Ekepjq00zZzdGxwLnF_vYT_M0g@mail.gmail.com>
On Sun, Mar 22, 2026 at 02:34:59PM -0700, Jiaqi Yan wrote:
> > [...snip...]
> > * MF_DELAYED - The m-f() handler marks the page as PG_hwpoisoned'ed.
>
> nit: would it be worth correcting PG_hwpoisoned to PG_hwpoison'ed? as
> there is really no "PG_hwpoisoned" page flag.
I will change PG_hwpoisoned'ed to PG_hwpoison'ed in the next version.
> > - * The page is unmapped, and is removed from the LRU or file mapping.
> > - * An attempt to access the page again will trigger page fault and the
> > - * PF handler will kill the process.
> > + * It means the page was partially isolated (e.g. removed from file mapping
>
> nit: what about "unmapped"?
Thanks to point this out.
I will change to "It means the page was unmapped and partially isolated
(e.g. ..." in the next version.
> > + * or the LRU) but full cleanup is deferred (e.g. the metadata for the
> > + * memory, as in struct page/folio, is still referenced). Any further
> > + * access to the page will result in the process being killed.
> > *
> > * MF_RECOVERED - The m-f() handler marks the page as PG_hwpoisoned'ed.
> > * The page has been completely isolated, that is, unmapped, taken out of
> >
> > --
> > 2.53.0.959.g497ff81fa9-goog
> >
>
> Reviewed-by: Jiaqi Yan <jiaqiyan@google.com>
next prev parent reply other threads:[~2026-03-23 21:19 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-19 23:30 [PATCH RFC v2 0/7] mm: Fix MF_DELAYED handling on memory failure Lisa Wang
2026-03-19 23:30 ` [PATCH RFC v2 1/7] mm: memory_failure: Clarify the MF_DELAYED definition Lisa Wang
2026-03-22 21:34 ` Jiaqi Yan
2026-03-23 21:18 ` Lisa Wang [this message]
2026-03-19 23:30 ` [PATCH RFC v2 2/7] mm: memory_failure: Allow truncate_error_folio to return MF_DELAYED Lisa Wang
2026-03-19 23:30 ` [PATCH RFC v2 3/7] mm: shmem: Update shmem handler to the MF_DELAYED definition Lisa Wang
2026-03-19 23:30 ` [PATCH RFC v2 4/7] mm: memory_failure: Generalize extra_pins handling to all MF_DELAYED cases Lisa Wang
2026-03-19 23:30 ` [PATCH RFC v2 5/7] mm: selftests: Add shmem memory failure test Lisa Wang
2026-03-21 6:30 ` Baolin Wang
2026-03-24 0:43 ` Lisa Wang
2026-03-24 12:36 ` Baolin Wang
2026-03-19 23:30 ` [PATCH RFC v2 6/7] KVM: selftests: Add memory failure tests in guest_memfd_test Lisa Wang
2026-03-19 23:30 ` [PATCH RFC v2 7/7] KVM: selftests: Test guest_memfd behavior with respect to stage 2 page tables Lisa Wang
2026-03-20 2:39 ` [PATCH RFC v2 0/7] mm: Fix MF_DELAYED handling on memory failure Andrew Morton
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