linux-kernel - Re: [PATCH v2 4/5] dm-stripe: limit chunk

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Message-ID: <17d13cad-e205-43b7-835c-dfcf5f356399@linux.ibm.com>
Date: Fri, 20 Jun 2025 20:03:15 +0530
From: Nilay Shroff <nilay@...ux.ibm.com>
To: John Garry <john.g.garry@...cle.com>, agk@...hat.com, snitzer@...nel.org,
        mpatocka@...hat.com, song@...nel.org, yukuai3@...wei.com, hch@....de,
        axboe@...nel.dk
Cc: dm-devel@...ts.linux.dev, linux-kernel@...r.kernel.org,
        linux-raid@...r.kernel.org, linux-block@...r.kernel.org,
        ojaswin@...ux.ibm.com, martin.petersen@...cle.com
Subject: Re: [PATCH v2 4/5] dm-stripe: limit chunk_sectors to the stripe size



On 6/18/25 2:07 PM, John Garry wrote:
> Same as done for raid0, set chunk_sectors limit to appropriately set the
> atomic write size limit.
> 
> Setting chunk_sectors limit in this way overrides the stacked limit
> already calculated based on the bottom device limits. This is ok, as
> when any bios are sent to the bottom devices, the block layer will still
> respect the bottom device chunk_sectors.
> 
> Signed-off-by: John Garry <john.g.garry@...cle.com>

Looks good to me:
Reviewed-by: Nilay Shroff <nilay@...ux.ibm.com>