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Date:   Wed, 20 Sep 2023 20:28:02 +0100
From:   Matthew Wilcox <willy@infradead.org>
To:     Bart Van Assche <bvanassche@acm.org>
Cc:     Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org,
        linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        "Martin K . Petersen" <martin.petersen@oracle.com>,
        Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH 00/13] Pass data temperature information to zoned UFS
 devices
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References: <20230920191442.3701673-1-bvanassche@acm.org>
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On Wed, Sep 20, 2023 at 12:14:25PM -0700, Bart Van Assche wrote:
> Hi Jens,
> 
> Zoned UFS vendors need the data temperature information. Hence this patch
> series that restores write hint information in F2FS and in the block layer.
> The SCSI disk (sd) driver is modified such that it passes write hint
> information to SCSI devices via the GROUP NUMBER field.

"Need" in what sense?  Can you quantify what improvements we might
see from this patchset?