linux-kernel - Re: [dm-devel] [PATCH v9 05/13] nvme: zns: Allow ZNS drives that have non-power_of

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Message-ID: <2616b59b-8c6b-a482-a396-d9408fa461a3@acm.org>
Date:   Wed, 3 Aug 2022 10:22:32 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Pankaj Raghav <p.raghav@...sung.com>, Johannes.Thumshirn@....com,
        snitzer@...nel.org, axboe@...nel.dk,
        damien.lemoal@...nsource.wdc.com, agk@...hat.com, hch@....de
Cc:     pankydev8@...il.com, gost.dev@...sung.com,
        linux-kernel@...r.kernel.org, linux-nvme@...ts.infradead.org,
        linux-block@...r.kernel.org, dm-devel@...hat.com,
        jaegeuk@...nel.org, matias.bjorling@....com,
        Luis Chamberlain <mcgrof@...nel.org>
Subject: Re: [dm-devel] [PATCH v9 05/13] nvme: zns: Allow ZNS drives that have
 non-power_of_2 zone size

On 8/3/22 02:47, Pankaj Raghav wrote:
> -	sector &= ~(ns->zsze - 1);
> +	/*
> +	 * Round down the sector value to the nearest zone start
> +	 */
> +	div64_u64_rem(sector, ns->zsze, &remainder);
> +	sector -= remainder;

Could bdev_offset_from_zone_start() be used here?

Thanks,

Bart.