linux-kernel - Re: [PATCH 1/4] dma-mapping: move the remaining DMA API calls out of line

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Message-ID: <20200417075852.GA20049@lst.de>
Date:   Fri, 17 Apr 2020 09:58:52 +0200
From:   Christoph Hellwig <hch@....de>
To:     Alexey Kardashevskiy <aik@...abs.ru>
Cc:     Christoph Hellwig <hch@....de>, iommu@...ts.linux-foundation.org,
        linuxppc-dev@...ts.ozlabs.org, Lu Baolu <baolu.lu@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Joerg Roedel <joro@...tes.org>,
        Robin Murphy <robin.murphy@....com>,
        linux-kernel@...r.kernel.org, Michael Ellerman <mpe@...erman.id.au>
Subject: Re: [PATCH 1/4] dma-mapping: move the remaining DMA API calls out
 of line

On Wed, Apr 15, 2020 at 09:21:37PM +1000, Alexey Kardashevskiy wrote:
> And the fact they were exported leaves possibility that there is a
> driver somewhere relying on these symbols or distro kernel won't build
> because the symbol disappeared from exports (I do not know what KABI
> guarantees or if mainline kernel cares).

We absolutely do not care.  In fact for abuses of APIs that drivers
should not use we almost care to make them private and break people
abusing them.

> I do not care in particular but
> some might, a line separated with empty lines in the commit log would do.

I'll add a blurb for the next version.