From xemacs-m  Mon Dec 16 15:48:20 1996
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Date: Mon, 16 Dec 1996 16:48:19 -0500 (EST)
From: Dave Mason <dmason@plg.uwaterloo.ca>
Message-Id: <199612162148.QAA25846@plg.uwaterloo.ca>
To: xemacs-beta@xemacs.org
Subject: Re: 0 length files on full disk (I'm glad this isn't a stupid question)
In-Reply-To: <199612162132.NAA08243@newman>
References: <199612161431.JAA21057@plg.uwaterloo.ca>
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	<199612162129.QAA25599@plg.uwaterloo.ca>
	<199612162132.NAA08243@newman>
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William Perry writes:
> Dave Mason writes:
> >64K isn't a disk allocation unit, either.  If I fill up the disk so
> >there's only 32K left, I get the same behaviour: 64K works (and writes
> >32K!!!), 64K+1 fails.  But cat sees the error.  Here's an example
> >(with the rc shell):
> >Sorry, I don't have FSF emacs installed, and 19.13 is gzipped up
> >because we're short of disk space (can you guess how I discovered this
> >problem in the first case? :-) so I can't easily try other versions.
> 
>   Stallman recently mailed out a request to see if anybody else was seein
> this problem to the emacs beta testers, so it seems to be a bug we all
> have.

Are we all using mmap for files?  64K does sound like a possible MMU boundary.

(The wily people just finished flirting with mmap, but have backed
away (I haven't the slightest idea why (no irony intended)).)

../Dave

