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From:   "Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp" 
        <Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp>
To:     "Yuezhang.Mo@sony.com" <Yuezhang.Mo@sony.com>,
        Namjae Jeon <linkinjeon@kernel.org>,
        "sj1557.seo@samsung.com" <sj1557.seo@samsung.com>
CC:     "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "Andy.Wu@sony.com" <Andy.Wu@sony.com>,
        "Wataru.Aoyama@sony.com" <Wataru.Aoyama@sony.com>
Subject: Re: [PATCH v2] exfat: do not clear VolumeDirty in writeback
Thread-Topic: [PATCH v2] exfat: do not clear VolumeDirty in writeback
Thread-Index: Adg0Vskc+T+8E+65Sm+jIEZBsmb4mgAqgpIB
Date:   Fri, 11 Mar 2022 04:34:42 +0000
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Hi, Yuezhang,Mo=0A=
=0A=
I think it's good.=0A=
It will not be possible to clear dirty automatically, but I think device li=
fe and reliable integrity are more important.=0A=
=0A=
=0A=
> -       if (sync)=0A=
> -               sync_dirty_buffer(sbi->boot_bh);=0A=
> +       sync_dirty_buffer(sbi->boot_bh);=0A=
> +=0A=
=0A=
Use __sync_dirty_buffer() with REQ_FUA/REQ_PREFLUSH instead to guarantee a =
strict write order (including devices).=0A=
=0A=
BR=0A=
T .Kohada=