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Date:   Thu, 20 Jul 2023 08:47:44 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Petr Tesarik <petrtesarik@huaweicloud.com>
Cc:     Stefano Stabellini <sstabellini@kernel.org>,
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        Roberto Sassu <roberto.sassu@huaweicloud.com>,
        Kefeng Wang <wangkefeng.wang@huawei.com>, petr@tesarici.cz
Subject: Re: [PATCH v4 8/8] swiotlb: search the software IO TLB only if a
 device makes use of it
Message-ID: <20230720064744.GA4395@lst.de>
References: <cover.1689261692.git.petr.tesarik.ext@huawei.com> <a8d31d3fffa0867dce2b44b98dc2714289edfdc9.1689261692.git.petr.tesarik.ext@huawei.com>
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Any reason this can't just do a list_empty_careful on the list
instead of adding yet another field that grows struct device?