linux-kernel - Re: [PATCH v7 0/6] block/md/dm: set chunk

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Message-ID: <yq1ms9bar6o.fsf@ca-mkp.ca.oracle.com>
Date: Fri, 11 Jul 2025 07:43:50 -0400
From: "Martin K. Petersen" <martin.petersen@...cle.com>
To: John Garry <john.g.garry@...cle.com>
Cc: agk@...hat.com, snitzer@...nel.org, mpatocka@...hat.com, song@...nel.org,
        yukuai3@...wei.com, hch@....de, nilay@...ux.ibm.com, axboe@...nel.dk,
        cem@...nel.org, 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,
        akpm@...ux-foundation.org, linux-xfs@...r.kernel.org,
        djwong@...nel.org, dlemoal@...nel.org
Subject: Re: [PATCH v7 0/6] block/md/dm: set chunk_sectors from stacked dev
 stripe size


John,

> This value in io_min is used to configure any atomic write limit for
> the stacked device. The idea is that the atomic write unit max is a
> power-of-2 factor of the stripe size, and the stripe size is available
> in io_min.

LGTM.

Reviewed-by: Martin K. Petersen <martin.petersen@...cle.com>

-- 
Martin K. Petersen