From: Mike Kravetz <mike.kravetz@oracle.com>
To: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Cc: Greg KH <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Yang Shi <shy828301@gmail.com>,
James Houghton <jthoughton@google.com>,
Muchun Song <songmuchun@bytedance.com>,
Miaohe Lin <linmiaohe@huawei.com>,
Andrew Morton <akpm@linux-foundation.org>,
Naoya Horiguchi <naoya.horiguchi@nec.com>
Subject: Re: hwpoison, shmem: fix data lost issue for 5.15.y
Date: Mon, 14 Nov 2022 14:53:51 -0800 [thread overview]
Message-ID: <Y3LG/+wWSSj6ZYzl@monkey> (raw)
In-Reply-To: <20221114223900.GA3883066@u2004>
On 11/15/22 07:39, Naoya Horiguchi wrote:
> On Mon, Nov 14, 2022 at 05:11:35PM +0100, Greg KH wrote:
> > On Mon, Nov 14, 2022 at 10:14:03PM +0900, Naoya Horiguchi wrote:
> > > Hi,
> > >
> > > I'd like to request the follow commits to be backported to 5.15.y.
> > >
> > > - dd0f230a0a80 ("mm: hwpoison: refactor refcount check handling")
> > > - 4966455d9100 ("mm: hwpoison: handle non-anonymous THP correctly")
> > > - a76054266661 ("mm: shmem: don't truncate page if memory failure happens")
> > >
> > > These patches fixed a data lost issue by preventing shmem pagecache from
> > > being removed by memory error. These were not tagged for stable originally,
> > > but that's revisited recently.
> >
> > And have you tested that these all apply properly (and in which order?)
>
> Yes, I've checked that these cleanly apply (without any change) on
> 5.15.78 in the above order (i.e. dd0f23 is first, 496645 comes next,
> then a76054).
>
> > and work correctly?
>
> Yes, I ran related testcases in my test suite, and their status changed
> FAIL to PASS with these patches.
Hi Naoya,
Just curious if you have plans to do backports for earlier releases?
If not, I can start that effort. We have seen data loss/corruption because of
this on a 4.14 based release. So, I would go at least that far back.
--
Mike Kravetz
next prev parent reply other threads:[~2022-11-14 22:54 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-14 13:14 hwpoison, shmem: fix data lost issue for 5.15.y Naoya Horiguchi
2022-11-14 16:11 ` Greg KH
2022-11-14 22:39 ` Naoya Horiguchi
2022-11-14 22:53 ` Mike Kravetz [this message]
2022-11-15 1:16 ` HORIGUCHI NAOYA(堀口 直也)
2022-11-15 1:30 ` Mike Kravetz
2022-11-15 6:39 ` Naoya Horiguchi
2022-11-16 3:48 ` Mike Kravetz
2022-11-16 23:58 ` Naoya Horiguchi
2022-11-23 1:05 ` Mike Kravetz
2022-11-23 18:54 ` Yang Shi
2022-11-24 3:03 ` Naoya Horiguchi
2022-11-16 9:16 ` Greg KH
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=Y3LG/+wWSSj6ZYzl@monkey \
--to=mike.kravetz@oracle.com \
--cc=akpm@linux-foundation.org \
--cc=gregkh@linuxfoundation.org \
--cc=jthoughton@google.com \
--cc=linmiaohe@huawei.com \
--cc=naoya.horiguchi@linux.dev \
--cc=naoya.horiguchi@nec.com \
--cc=shy828301@gmail.com \
--cc=songmuchun@bytedance.com \
--cc=stable@vger.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;
as well as URLs for NNTP newsgroup(s).