linux-kernel - Re: [RFC PATCH V2 0/6] ublk_drv: add USER

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Message-ID: <Yxae/6fxhrmHOiKG@T590>
Date:   Tue, 6 Sep 2022 09:14:39 +0800
From:   Ming Lei <ming.lei@...hat.com>
To:     ZiyangZhang <ZiyangZhang@...ux.alibaba.com>
Cc:     axboe@...nel.dk, xiaoguang.wang@...ux.alibaba.com,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        joseph.qi@...ux.alibaba.com, ming.lei@...hat.com
Subject: Re: [RFC PATCH V2 0/6] ublk_drv: add USER_RECOVERY support

On Wed, Aug 31, 2022 at 11:51:30PM +0800, ZiyangZhang wrote:
> ublk_drv is a driver simply passes all blk-mq rqs to ublksrv[1] in
> userspace. For each ublk queue, there is one ubq_daemon(pthread).
> All ubq_daemons share the same process which opens /dev/ublkcX.
> The ubq_daemon code infinitely loops on io_uring_enter() to
> send/receive io_uring cmds which pass information of blk-mq
> rqs.

BTW, given ublk document is merged, so please document the new
added commands in Documentation/block/ublk.rst in following versions.


Thanks,
Ming