linux-kernel - Re: [PATCH v2 3/5] md/raid10: set chunk

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Message-ID: <13b0be8a-298d-e2eb-aae4-f37273ab2ee2@huaweicloud.com>
Date: Wed, 2 Jul 2025 17:33:40 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
To: John Garry <john.g.garry@...cle.com>, agk@...hat.com, snitzer@...nel.org,
 mpatocka@...hat.com, song@...nel.org, hch@....de, nilay@...ux.ibm.com,
 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,
 "yukuai (C)" <yukuai3@...wei.com>
Subject: Re: [PATCH v2 3/5] md/raid10: set chunk_sectors limit

在 2025/06/18 16:37, John Garry 写道:
> Same as done for raid0, set chunk_sectors limit to appropriately set the
> atomic write size limit.
> 
> Signed-off-by: John Garry <john.g.garry@...cle.com>
> ---
>   drivers/md/raid10.c | 1 +
>   1 file changed, 1 insertion(+)
> 

Reviewed-by: Yu Kuai <yukuai3@...wei.com>

> diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
> index b74780af4c22..97065bb26f43 100644
> --- a/drivers/md/raid10.c
> +++ b/drivers/md/raid10.c
> @@ -4004,6 +4004,7 @@ static int raid10_set_queue_limits(struct mddev *mddev)
>   	md_init_stacking_limits(&lim);
>   	lim.max_write_zeroes_sectors = 0;
>   	lim.io_min = mddev->chunk_sectors << 9;
> +	lim.chunk_sectors = mddev->chunk_sectors;
>   	lim.io_opt = lim.io_min * raid10_nr_stripes(conf);
>   	lim.features |= BLK_FEAT_ATOMIC_WRITES;
>   	err = mddev_stack_rdev_limits(mddev, &lim, MDDEV_STACK_INTEGRITY);
>