Re: [PATCH] mm: Export symbols unmapped_area() & unmapped_area_topdown()

[Christoph Hellwig]

On Wed, Mar 16, 2016 at 05:10:34PM +0000, Olu Ogunbowale wrote:
> From: Olujide Ogunbowale <Olu.Ogunbowale@xxxxxxxxxx>
> 
> Export the memory management functions, unmapped_area() &
> unmapped_area_topdown(), as GPL symbols; this allows the kernel to
> better support process address space mirroring on both CPU and device
> for out-of-tree drivers by allowing the use of vm_unmapped_area() in a
> driver's file operation get_unmapped_area().

No new exports without in-tree drivers.  How about you get started
to get your drives into the tree first?