Optional mmap(2) support for geom(4) providers

[Maxim Sobolev]

Poul-Henning Kamp wrote:
> In message <44681D92.80309 at sippysoft.com>, Maxim Sobolev writes:
>> Hi,
>>
>> I would like to extend md(4) with support for mmap(4) operations, 
> 
> Uhm, how exactly would that work ?

Just like ioctl(2) works: geom_dev will accept mmap requests and pass it 
to the underlying provider for execution if that provider has mmap 
handler in its g_class.

-Maxim