[CRIU] [PATCH] mm: mark VM_IO and VM_PFNMAP VMA-s as unsupported

[Cyrill Gorcunov]

On Mon, May 19, 2014 at 11:02:05PM +0400, Andrey Vagin wrote:
> vmsplice doesn't work for such VMA-s.
> 
> This flags is set in a kernel function remap_pfn_range()
> (remap kernel memory to userspace), which is widely used by device
> drivers to provide direct access to a device memory.
> 
> Reported-by: J F <jgmb45 at gmail.com>
> Cc: Cyrill Gorcunov <gorcunov at openvz.org>
> Signed-off-by: Andrey Vagin <avagin at openvz.org>
Acked-by: Cyrill Gorcunov <gorcunov at openvz.org>

This is definitely a good catch!