public inbox for linux-mm@kvack.org
 help / color / mirror / Atom feed
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>


  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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=acGuQcWRuJMO0EJY@google.com \
    --to=wyihan@google.com \
    --cc=Liam.Howlett@oracle.com \
    --cc=ackerleytng@google.com \
    --cc=akpm@linux-foundation.org \
    --cc=baolin.wang@linux.alibaba.com \
    --cc=dave.hansen@linux.intel.com \
    --cc=david@kernel.org \
    --cc=hughd@google.com \
    --cc=jiaqiyan@google.com \
    --cc=kvm@vger.kernel.org \
    --cc=linmiaohe@huawei.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-kselftest@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=lorenzo.stoakes@oracle.com \
    --cc=mhocko@suse.com \
    --cc=michael.roth@amd.com \
    --cc=nao.horiguchi@gmail.com \
    --cc=pbonzini@redhat.com \
    --cc=rientjes@google.com \
    --cc=rppt@kernel.org \
    --cc=seanjc@google.com \
    --cc=shuah@kernel.org \
    --cc=surenb@google.com \
    --cc=tabba@google.com \
    --cc=vannapurve@google.com \
    --cc=vbabka@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox