GC & sensory pointers.

[Bill Frantz]

At 12:44 PM 12/24/98 -0800, Mark S. Miller wrote:
>To sell a strong key back to the space bank, you must have the space bank.
>A key to a space bank, powerful enough to sell back pages, is definitely
>not sensory, for this among other reasons.  Not being sensory, if it came
>from a factory in its initial endowment to its yield, it would be a hole
>subject to hole-check analysis.

[-] Minor quibble.  The space bank won't take a weak key to recycle an
object.  It requires a R/W call-ok page key or a node key.  The key to the
object is the issue, not the bank.