linux-kernel - Re: [PATCH RESEND v6 1/9] pagemap: Introduce ->memory

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Message-ID: <CAPcyv4h0p+zD5tsT8HDUpNq_ZDCqo249KsmPLX-U8ia146r2Tg@mail.gmail.com>
Date:   Fri, 20 Aug 2021 09:07:30 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     Shiyang Ruan <ruansy.fnst@...itsu.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-xfs <linux-xfs@...r.kernel.org>,
        Linux NVDIMM <nvdimm@...ts.linux.dev>,
        Linux MM <linux-mm@...ck.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        device-mapper development <dm-devel@...hat.com>,
        "Darrick J. Wong" <djwong@...nel.org>, david <david@...morbit.com>,
        Christoph Hellwig <hch@....de>,
        Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...hat.com>
Subject: Re: [PATCH RESEND v6 1/9] pagemap: Introduce ->memory_failure()

On Fri, Jul 30, 2021 at 3:02 AM Shiyang Ruan <ruansy.fnst@...itsu.com> wrote:
>
> When memory-failure occurs, we call this function which is implemented
> by each kind of devices.  For the fsdax case, pmem device driver
> implements it.  Pmem device driver will find out the filesystem in which
> the corrupted page located in.  And finally call filesystem handler to
> deal with this error.
>
> The filesystem will try to recover the corrupted data if necessary.

This patch looks good to me, but I would fold it into the patch that
first populates ->memory_failure().