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

[Ivan Voras]

Maxim Sobolev wrote:
> Hi,
> 
> I would like to extend md(4) with support for mmap(4) operations, 
> however it's interfaced to the world via geom_dev(4), which doesn't 
> provide mmap pass-through interface. Is it intentional or not? Are you 
> willing to accept the patches if I do the actual work?

Just an opinion: It would probably be more useful to implement mmap at a 
lower level (GEOM) so all devices can use it.