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From: Poul-Henning Kamp <phk@phk.freebsd.dk>
Date: Sat, 18 Dec 2004 18:51:57 +0100
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Subject: Forcefully unmounting devfs...
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Brainteaser for the x-mas days:

	What is the correct handling of busy device vnodes belonging
	to a devfs mountpoint which is being forcefully unmounted ?


If you think this has a simple answer, please don't bother replying.

-- 
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.