shmmax tops out at 2G?

[Bill Moran]

In response to Christian Peron <csjp at freebsd.org>:

> On Mon, Feb 23, 2009 at 11:58:09AM -0800, Garrett Cooper wrote:
> [..]
> > 
> > 	Why isn't the field an unsigned int / size_t? I don't see much value 
> > in having the size be signed...
> 
> No idea :) This code long predates me. 

It's that way because the original Sun spec for the API said so.

It makes little sense to change it just to unsigned.  The additional 2G
it would give doesn't really solve the tuning problem on a 64G system.
This is simply a spec that has become outdated by modern hardware.

-- 
Bill Moran
http://www.potentialtech.com
http://people.collaborativefusion.com/~wmoran/