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Date:   Tue, 15 Oct 2019 00:57:36 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     Naohiro Aota <naohiro.aota@wdc.com>
Cc:     linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
        linux-block@vger.kernel.org,
        Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] mm, swap: disallow swapon() on zoned block devices
Message-ID: <20191015075736.GC32307@infradead.org>
References: <20191015043827.160444-1-naohiro.aota@wdc.com>
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On Tue, Oct 15, 2019 at 01:38:27PM +0900, Naohiro Aota wrote:
> +		if (blk_queue_is_zoned(p->bdev->bd_queue))
> +			return -EINVAL;

Please add a comment here (based on your changelog).