umount -f implementation

[Julian H. Stacey]

Kirk McKusick wrote:
> forced unmounts. The gentle force (-f) and the brute force (-F)
> unmount. 

-F Would also be nice for devd.conf detach, for when people
forget & pull a USB stick without unmounting first.
Better a corrupt stick than a crashed OS.

Cheers,
Julian
-- 
Julian Stacey: BSD Unix Linux C Sys. Eng. Consultant Munich http://berklix.com
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