provide more common DMA API functions V2

[Andrew Morton]

On Tue, 18 Aug 2015 07:38:25 +0200 Christoph Hellwig <hch at lst.de> wrote:

> On Mon, Aug 17, 2015 at 02:24:29PM -0700, Andrew Morton wrote:
> > 110254 bytes saved, shrinking the kernel by a whopping 0.17%. 
> > Thoughts?
> 
> Sounds fine to me.

OK, I'll clean it up a bit, check that each uninlining actually makes
sense and then I'll see how it goes.

> > 
> > I'll merge these 5 patches for 4.3.  That means I'll release them into
> > linux-next after 4.2 is released.
> 
> So you only add for-4.3 code to -next after 4.2 is odd?  Isn't thast the
> wrong way around?

Linus will be releasing 4.2 in 1-2 weeks and until then, linux-next is
supposed to contain only 4.2 material.  Once 4.2 is released,
linux-next is open for 4.3 material.