linux-kernel - Re: [PATCH v13 3/7] pagemap,pmem: Introduce ->memory

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Message-ID: <20220421065429.GB3607858@hori.linux.bs1.fc.nec.co.jp>
Date:   Thu, 21 Apr 2022 06:54:30 +0000
From:   HORIGUCHI NAOYA(堀口　直也) 
        <naoya.horiguchi@....com>
To:     Shiyang Ruan <ruansy.fnst@...itsu.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-xfs@...r.kernel.org" <linux-xfs@...r.kernel.org>,
        "nvdimm@...ts.linux.dev" <nvdimm@...ts.linux.dev>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "djwong@...nel.org" <djwong@...nel.org>,
        "dan.j.williams@...el.com" <dan.j.williams@...el.com>,
        "david@...morbit.com" <david@...morbit.com>,
        "hch@...radead.org" <hch@...radead.org>,
        "jane.chu@...cle.com" <jane.chu@...cle.com>,
        Christoph Hellwig <hch@....de>
Subject: Re: [PATCH v13 3/7] pagemap,pmem: Introduce ->memory_failure()

On Tue, Apr 19, 2022 at 12:50:41PM +0800, Shiyang Ruan 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.
> 
> With dax_holder notify support, we are able to notify the memory failure
> from pmem driver to upper layers.  If there is something not support in
> the notify routine, memory_failure will fall back to the generic hanlder.
> 
> Signed-off-by: Shiyang Ruan <ruansy.fnst@...itsu.com>
> Reviewed-by: Christoph Hellwig <hch@....de>
> Reviewed-by: Dan Williams <dan.j.williams@...el.com>

Looks good to me, thank you.

Reviewed-by: Naoya Horiguchi <naoya.horiguchi@....com>