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Date:   Tue, 12 Oct 2021 07:24:35 +0100
From:   Christoph Hellwig <hch@infradead.org>
To:     Jinyoung CHOI <j-young.choi@samsung.com>
Cc:     "axboe@kernel.dk" <axboe@kernel.dk>,
        "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] block-map: added error handling for bio_copy_kern()
Message-ID: <YWUqI/SkoJxYAeco@infradead.org>
References: <CGME20210928063420epcms2p8f0cad25e1b820169755962ff4555d3ac@epcms2p1>
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> +       int do_copy = 0;

Please make this a bool.  Otherwise the patch looks good.