[PLUG] VI without a swapfile?

[Jeff Bailey <skydiver38@verizon.net>]

Hey gurus...

Without getting into all the gory details, I have a loopback filesystem 
mounted (a file containing a filesystem) which is considered 100% full 
(according to "df").

I need to edit a file on that mount.  "vi" complains about not being 
able to create a swapfile, but allows me to edit.  The problem is that I 
can't save an edited version, even if all I do is delete lines.  I think 
this stems from the fact that vi tries to save a backup copy, and fails 
since there's no room.

I've done some googling (and will do more), but does anyone know 
anything about preventing vi from creating a duplicate file (editing in 
place, or whatever you want to call it).

:set directory didn't help, :set backupfile wasn't recognized, "vi -n" 
didn't help.

Thanks for any info.....

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