[PATCH] posix: Reimplement POSIX Key manager to use a red-black tree.

[Chris Johns]

Gedare Bloom wrote:
> I would put it back to the freechain unless there is a good way to check
> if the wkspace is almost all gone, which only is an issue for unlimited
> mode of some object.

Does this mean if I allocation a large number of keys then release them 
that memory is gone forever ?

The object's extender manages the freeing of object memory back to the 
workspace by waiting for half the allocation unit under the allocation 
threshold. The complication is needing to know the objects are in the 
same block of memory allocated. The code manages this and in reality 
this is what happens.

Chris