linux-kernel - Re: [PATCH v9 2/2] ublk: enable zoned storage support

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Date:   Tue, 01 Aug 2023 14:11:56 +0200
From:   "Andreas Hindborg (Samsung)" <nmi@...aspace.dk>
To:     Niklas Cassel <Niklas.Cassel@....com>
Cc:     Ming Lei <ming.lei@...hat.com>,
        Matias Bjørling <Matias.Bjorling@....com>,
        open list <linux-kernel@...r.kernel.org>,
        Damien Le Moal <dlemoal@...nel.org>,
        Jens Axboe <axboe@...nel.dk>,
        "gost.dev@...sung.com" <gost.dev@...sung.com>,
        "hch@...radead.org" <hch@...radead.org>,
        Johannes Thumshirn <jth@...nel.org>,
        Aravind Ramesh <Aravind.Ramesh@....com>,
        "open list:BLOCK LAYER" <linux-block@...r.kernel.org>,
        Hans Holmberg <Hans.Holmberg@....com>,
        Minwoo Im <minwoo.im.dev@...il.com>
Subject: Re: [PATCH v9 2/2] ublk: enable zoned storage support


Niklas Cassel <Niklas.Cassel@....com> writes:

> On Fri, Jul 14, 2023 at 09:25:10AM +0200, Andreas Hindborg wrote:
>> From: Andreas Hindborg <a.hindborg@...sung.com>
>
> Hello Andreas!
>

<snip>

>>  	/* for READ request, writing data in iod->addr to rq buffers */
>> @@ -1120,6 +1404,11 @@ static void ublk_commit_completion(struct ublk_device *ub,
>>  	/* find the io request and complete */
>>  	req = blk_mq_tag_to_rq(ub->tag_set.tags[qid], tag);
>>  
>> +	if (io->flags & UBLK_IO_FLAG_ZONE_APPEND) {
>
> Do we really need to introduce a completely new flag just for this?
>
> if (req_op(req) == REQ_OP_ZONE_APPEND)
>
> should work just as well, no?

Makes sense, thanks.

BR Andreas