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Date:   Mon, 10 Oct 2022 00:20:19 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     Khazhy Kumykov <khazhy@google.com>
Cc:     Damien Le Moal <damien.lemoal@opensource.wdc.com>,
        Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org,
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Subject: Re: [PATCH] block: allow specifying default iosched in config
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On Tue, Oct 04, 2022 at 04:15:20PM -0700, Khazhy Kumykov wrote:
> The kernel already picks and hardcodes a default scheduler, my
> thinking is: why not let folks choose? This was allowed in the old
> block layer since 2005.

You can choose it using CONFIG_CMDLINE.  We can't add a config option
for every bloody default as that simply does not scale.