linux-kernel - Re: ima: use of radix tree cache indexing == massive waste of memory?

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Message-Id: <20101017233620.0db45dd9.akpm@linux-foundation.org>
Date:	Sun, 17 Oct 2010 23:36:20 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Kyle McMartin <kyle@...artin.ca>
Cc:	James Morris <jmorris@...ei.org>,
	Christoph Hellwig <hch@...radead.org>,
	kernel@...ts.fedoraproject.org, Mimi Zohar <zohar@...ibm.com>,
	warthog9@...nel.org, Dave Chinner <david@...morbit.com>,
	linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>,
	Serge Hallyn <serue@...ibm.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>, mingo@...e.hu,
	eparis@...hat.com
Subject: Re: ima: use of radix tree cache indexing == massive waste of
 memory?

On Mon, 18 Oct 2010 02:25:30 -0400 Kyle McMartin <kyle@...artin.ca> wrote:

> Subject: [PATCH] ima: allow it to be completely disabled (and default to off)

Good enough as a short-term thing I guess.

But the memory consumption which David described is plain nuttiness and
needs to be fixed, presumably by using a more appropriate data structure
for lookups.

However unless I missed it, nobody has yet stated that they intend to
fix this?
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