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Date:   Mon, 21 Jun 2021 16:28:33 +0100
From:   Christoph Hellwig <hch@infradead.org>
To:     Qu Wenruo <wqu@suse.com>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>,
        "Leizhen (ThunderTown)" <thunder.leizhen@huawei.com>
Subject: Re: Please don't waste maintainers' time on your KPI grabbing
 patches (AKA, don't be a KPI jerk)
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WTF is KPI?