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Date:   Tue, 10 Aug 2021 10:45:20 +0200
From:   Christoph Hellwig <hch@infradead.org>
To:     Alex Williamson <alex.williamson@redhat.com>
Cc:     linux-kernel@vger.kernel.org, kvm@vger.kernel.org, jgg@nvidia.com,
        peterx@redhat.com
Subject: Re: [PATCH 2/7] vfio: Export unmap_mapping_range() wrapper
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References: <162818167535.1511194.6614962507750594786.stgit@omen>
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> +void vfio_device_unmap_mapping_range(struct vfio_device *device,
> +				     loff_t start, loff_t len)
> +{
> +	unmap_mapping_range(device->inode->i_mapping, start, len, true);
> +}
> +EXPORT_SYMBOL_GPL(vfio_device_unmap_mapping_range);

Instead of mirroring the name of unmap_mapping_range maybe give this
a name to document the use case?

> +extern void vfio_device_unmap_mapping_range(struct vfio_device *device,
> +					    loff_t start, loff_t len);

No need for the extern.