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Date:   Wed, 4 Aug 2021 14:52:04 +0100
From:   Christoph Hellwig <hch@infradead.org>
To:     Chao Yu <chao@kernel.org>
Cc:     jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net,
        linux-kernel@vger.kernel.org, Chao Yu <chao.yu@linux.dev>
Subject: Re: [PATCH] f2fs: introduce nosmall_discard mount option
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On Fri, Jul 30, 2021 at 06:05:30PM +0800, Chao Yu wrote:
> This patch introduces a new mountoption "nosmall_discard" to support
> disabling small discard functionality, note that the mountoption can not
> be removed by remount() due to related metadata should always be
> initialized during mount().

Why does this need an option?  It should be enable IFF and only IFF a
SMR drive is detected.