[Intel-gfx] [PATCH 3/4] mm: Export remap_io_mapping()

[Kirill A. Shutemov]

Chris Wilson wrote:
> This is similar to remap_pfn_range(), and uses the recently refactor
> code to do the page table walking. The key difference is that is back
> propagates its error as this is required for use from within a pagefault
> handler. The other difference, is that it combine the page protection
> from io-mapping, which is known from when the io-mapping is created,
> with the per-vma page protection flags. This avoids having to walk the
> entire system description to rediscover the special page protection
> established for the io-mapping.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

Looks okay to me:

Acked-by: Kirill A. Shutemov <kirill.shutemov at linux.intel.com>

-- 
 Kirill A. Shutemov