linux-kernel - Re: [PATCH v2 3/3] blk-wbt: don't enable throttling if default elevator is bfq

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Message-ID: <YylrAbQ75wCAj5va@infradead.org>
Date:   Tue, 20 Sep 2022 00:25:53 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Yu Kuai <yukuai1@...weicloud.com>
Cc:     paolo.valente@...aro.org, axboe@...nel.dk,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        yukuai3@...wei.com, yi.zhang@...wei.com
Subject: Re: [PATCH v2 3/3] blk-wbt: don't enable throttling if default
 elevator is bfq

Matching names is always is a bad idea.

Just ad a flags field to elevator_mq_ops, add a DISABLE_WBT flag
to it, and check for that and everything should become much, much
simpler.