linux-kernel - Re: [PATCH v8 00/11] support non power of 2 zoned device

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Message-ID: <e0606903-c007-43f1-538f-b70ee607be0a@samsung.com>
Date:   Thu, 28 Jul 2022 13:57:58 +0200
From:   Pankaj Raghav <p.raghav@...sung.com>
To:     Bart Van Assche <bvanassche@....org>,
        <damien.lemoal@...nsource.wdc.com>, <hch@....de>,
        <axboe@...nel.dk>, <snitzer@...nel.org>,
        <Johannes.Thumshirn@....com>
CC:     <matias.bjorling@....com>, <gost.dev@...sung.com>,
        <linux-kernel@...r.kernel.org>, <hare@...e.de>,
        <linux-block@...r.kernel.org>, <pankydev8@...il.com>,
        <jaegeuk@...nel.org>, <dm-devel@...hat.com>,
        <linux-nvme@...ts.infradead.org>
Subject: Re: [PATCH v8 00/11] support non power of 2 zoned device

Hi Bart,

On 2022-07-28 01:19, Bart Van Assche wrote:
> On 7/27/22 09:22, Pankaj Raghav wrote:
>> This series adds support to npo2 zoned devices in the block and nvme
>> layer and a new **dm target** is added: dm-po2z-target. This new
>> target will be initially used for filesystems such as btrfs and
>> f2fs that does not have native npo2 zone support.
> 
> Should any SCSI changes be included in this patch series? From sd_zbc.c:
> 
>     if (!is_power_of_2(zone_blocks)) {
>         sd_printk(KERN_ERR, sdkp,
>               "Zone size %llu is not a power of two.\n",
>               zone_blocks);
>         return -EINVAL;
>     }
> 
I would keep these changes out of the current patch series because it
will also increase the test scope. I think once the block layer
constraint is removed as a part of this series, we can work on the SCSI
changes in the next cycle.
> Thanks,
> 
> Bart.