linux-kernel - Re: [PATCH -next] swiotlb: drop pointless static qualifier in swiotlb_dma

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Message-ID: <20190214072658.GA10416@lst.de>
Date:   Thu, 14 Feb 2019 08:26:58 +0100
From:   Christoph Hellwig <hch@....de>
To:     YueHaibing <yuehaibing@...wei.com>
Cc:     Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Christoph Hellwig <hch@....de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH -next] swiotlb: drop pointless static qualifier in
 swiotlb_dma_supported()

On Thu, Feb 14, 2019 at 01:41:47AM +0000, YueHaibing wrote:
> There is no need to have the 'struct dentry *d_swiotlb_usage' variable
> static since new value always be assigned before use it.

FYI, this is in swiotlb_create_debugfs, not swiotlb_dma_supported.