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To: Andi Kleen <ak@suse.de>
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Subject: Re: [PATCH] zerocopy NFS updated
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From: ebiederm@xmission.com (Eric W. Biederman)
Date: 13 Apr 2002 14:34:12 -0600
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Andi Kleen <ak@suse.de> writes:

> On Sat, Apr 13, 2002 at 01:19:46PM -0600, Eric W. Biederman wrote:
> > Could the garbage from ext3 in writeback mode be considered an
> > information leak?  I know that is why most places in the kernel
> > initialize pages to 0.  So you don't accidentally see what another
> > user put there.
> 
> Yes it could. But then ext2/ffs have the same problem and so far people were
> able to live on with that.

The reason I asked, is the description sounded specific to ext3.  Also
with ext3 a supported way to shutdown is to just pull the power on the
machine.  And the filesystem comes back to life without a full fsck.

So if this can happen when all you need is to replay the journal, I
have issues with it.  If this happens in the case of damaged
filesystem I don't.

Eric
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