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Date:   Mon, 19 Apr 2021 08:45:29 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Damien Le Moal <damien.lemoal@wdc.com>
Cc:     dm-devel@redhat.com, Mike Snitzer <snitzer@redhat.com>,
        linux-block@vger.kernel.org, Jens Axboe <axboe@kernel.dk>,
        linux-nvme@lists.infradead.org, Christoph Hellwig <hch@lst.de>,
        linux-scsi@vger.kernel.org,
        "Martin K . Petersen" <martin.petersen@oracle.com>,
        linux-fsdevel@vger.kernel.org,
        Johannes Thumshirn <johannes.thumshirn@wdc.com>,
        Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Subject: Re: [PATCH v2 3/3] zonefs: fix synchronous write to sequential
 zone files
Message-ID: <20210419064529.GA19041@lst.de>
References: <20210417023323.852530-1-damien.lemoal@wdc.com> <20210417023323.852530-4-damien.lemoal@wdc.com>
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On Sat, Apr 17, 2021 at 11:33:23AM +0900, Damien Le Moal wrote:
> Synchronous writes to sequential zone files cannot use zone append
> operations if the underlying zoned device queue limit
> max_zone_append_sectors is 0, indicating that the device does not
> support this operation. In this case, fall back to using regular write
> operations.

Zone append is a mandatory feature of the zoned device API.