Slight change of vnode<-->vm object relationship.

[Poul-Henning Kamp]

In message <34cb7c84050111145415980aa2 at mail.gmail.com>, Peter Edwards writes:

>How about mmap() mappings after the close()? These can persist post
>VOP_CLOSE, can't they?

I belive they hold a reference to the vnode so that it is in fact
not really closed after all, it just looks that way from userland.

If that wasn't the case, then we would be leaking diskspace all
over the place if people did:

	create file
	fill with data
	mmap
	unlink file
	close file

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Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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