linux-kernel - Re: [PATCH 0/3] zone-append support in aio and io-uring

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Message-ID: <20200617174249.GL8681@bombadil.infradead.org>
Date:   Wed, 17 Jun 2020 10:42:49 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     Kanchan Joshi <joshi.k@...sung.com>
Cc:     axboe@...nel.dk, viro@...iv.linux.org.uk, bcrl@...ck.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-aio@...ck.org, io-uring@...r.kernel.org,
        linux-block@...r.kernel.org, selvakuma.s1@...sung.com,
        nj.shetty@...sung.com, javier.gonz@...sung.com
Subject: Re: [PATCH 0/3] zone-append support in aio and io-uring

On Wed, Jun 17, 2020 at 10:53:36PM +0530, Kanchan Joshi wrote:
> This patchset enables issuing zone-append using aio and io-uring direct-io interface.
> 
> For aio, this introduces opcode IOCB_CMD_ZONE_APPEND. Application uses start LBA
> of the zone to issue append. On completion 'res2' field is used to return
> zone-relative offset.

Maybe it's obvious to everyone working with zoned drives on a daily
basis, but please explain in the commit message why you need to return
the zone-relative offset to the application.