Re: [RFC] ext2 and ext3 block reservations can be bypassed

Mark Mielke (mark@mark.mielke.cc)
Sun, 12 May 2002 15:04:49 -0400


On Sun, May 12, 2002 at 09:02:02PM +0200, Jakob Østergaard wrote:
> On Sun, May 12, 2002 at 11:37:30AM -0700, Elladan wrote:
> > Having unsupported security features is typically a bad idea.
> I guess the point is that it is not a security feature.
> The 5% default is good for ext2, since the filesystem will get heavily
> fragmented if you fill it up more than ~95%. So it is a convenience
> feature.

I would place it as 'system crash avoidance' rather than 'convenience'
or 'security'.

If somebody purposefully tries to circumvent the 'system crash avoidance'
feature, well... they could just as easily have said "while (1) fork;"
and accomplished something similar.

mark

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