linux-kernel - Re: [PATCH v11 3/3] ublk: enable zoned storage support

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Date:   Fri, 4 Aug 2023 21:39:47 +0800
From:   Ming Lei <tom.leiming@...il.com>
To:     "Andreas Hindborg (Samsung)" <nmi@...aspace.dk>
Cc:     Ming Lei <ming.lei@...hat.com>,
        Aravind Ramesh <Aravind.Ramesh@....com>,
        Christoph Hellwig <hch@...radead.org>, gost.dev@...sung.com,
        Minwoo Im <minwoo.im.dev@...il.com>,
        Hans Holmberg <Hans.Holmberg@....com>,
        Matias Bjorling <Matias.Bjorling@....com>,
        Damien Le Moal <dlemoal@...nel.org>,
        Andreas Hindborg <a.hindborg@...sung.com>,
        Johannes Thumshirn <jth@...nel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Jens Axboe <axboe@...nel.dk>,
        "open list:BLOCK LAYER" <linux-block@...r.kernel.org>
Subject: Re: [PATCH v11 3/3] ublk: enable zoned storage support

On Fri, Aug 4, 2023 at 8:34 PM Andreas Hindborg (Samsung)
<nmi@...aspace.dk> wrote:
>
> From: Andreas Hindborg <a.hindborg@...sung.com>
>
> Add zoned storage support to ublk: report_zones and operations:
>  - REQ_OP_ZONE_OPEN
>  - REQ_OP_ZONE_CLOSE
>  - REQ_OP_ZONE_FINISH
>  - REQ_OP_ZONE_RESET
>  - REQ_OP_ZONE_APPEND
>
> The zone append feature uses the `addr` field of `struct ublksrv_io_cmd` to
> communicate ALBA back to the kernel. Therefore ublk must be used with the
> user copy feature (UBLK_F_USER_COPY) for zoned storage support to be
> available. Without this feature, ublk will not allow zoned storage support.
>
> Signed-off-by: Andreas Hindborg <a.hindborg@...sung.com>

Reviewed-by: Ming Lei <ming.lei@...hat.com>
Tested-by: Ming Lei <ming.lei@...hat.com>

Thanks,