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Date:   Wed, 22 Dec 2021 01:08:15 -0800
From:   Christoph Hellwig <hch@infradead.org>
To:     Xiongfeng Wang <wangxiongfeng2@huawei.com>
Cc:     will@kernel.org, catalin.marinas@arm.com, mark.rutland@arm.com,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
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Subject: Re: [PATCH] asm-generic: introduce io_stop_wc() and add
 implementation for ARM64
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So what is going to use this?