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Date:   Sat, 18 Mar 2023 07:29:09 +0100
From:   Christoph Hellwig <hch@lst.de>
To:     Bart Van Assche <bvanassche@acm.org>
Cc:     Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org,
        Jaegeuk Kim <jaegeuk@kernel.org>,
        Christoph Hellwig <hch@lst.de>, Jan Kara <jack@suse.cz>
Subject: Re: [PATCH 0/2] Submit split bios in LBA order
Message-ID: <20230318062909.GB24880@lst.de>
References: <20230317195938.1745318-1-bvanassche@acm.org>
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On Fri, Mar 17, 2023 at 12:59:36PM -0700, Bart Van Assche wrote:
> Hi Jens,
> 
> For zoned storage it is essential that split bios are submitted in LBA order.
> This patch series realizes this by modifying __bio_split_to_limits() such that
> it submits the first bio fragment and returns the remainder instead of
> submitting the remainder and returning the first bio fragment. Please consider
> this patch series for the next merge window.

Why are you sending large writes using REQ_OP_WRITE and not
using REQ_OP_ZONE_APPEND which side steps all these issues?