Re: ramdisk/tmpfs/ramfs/memfs ?

[Ingo Oeser <ingo.oeser@informatik.tu-chemnitz.de>]

On Thu, Apr 26, 2001 at 01:49:05PM -0700, H. Peter Anvin wrote:
> > > 5. Can you set size limits on ramfs/tmpfs/memfs?

Yes, there is a patch for this.

> > i don't think you can set a limit in the current ramfs implementation but
> > it would not be particularly difficult to make it work I think
> It's a little more painful than you'd think for the simple reason that
> ramfs currently contains no space accounting whatsoever, which
> probably is a bad thing.  It definitely gave me some serious pause
> when I was working on SuperRescue 1.3, since I had no way of
> reasonably judging how big my ramfs actually was.  The only way I
> could get a reasonable idea was rebooting with various mem=
> parameters.

The patched variant gives to all of it. Even several kinds of
limits (inodes, dentries, ram pages).

I use this patch in production. 

The ac-Kernels all have this patch included, which are sometimes
more stable anyway these day. ;-)

HTH

Regards

Ingo Oeser
-- 
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