From owner-freebsd-arch@FreeBSD.ORG  Tue Jan 11 23:08:42 2005
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To: Peter Edwards <peadar.edwards@gmail.com>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Tue, 11 Jan 2005 22:54:45 GMT."
             <34cb7c84050111145415980aa2@mail.gmail.com> 
Date: Wed, 12 Jan 2005 00:08:35 +0100
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Sender: phk@critter.freebsd.dk
cc: arch@freebsd.org
Subject: Re: Slight change of vnode<-->vm object relationship. 
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In message <34cb7c84050111145415980aa2@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

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.