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

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Message-ID: <1287408660.2516.2.camel@localhost.localdomain>
Date:	Mon, 18 Oct 2010 09:31:00 -0400
From:	Mimi Zohar <zohar@...ux.vnet.ibm.com>
To:	Dave Chinner <david@...morbit.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Kyle McMartin <kyle@...artin.ca>,
	James Morris <jmorris@...ei.org>,
	Christoph Hellwig <hch@...radead.org>,
	kernel@...ts.fedoraproject.org, Mimi Zohar <zohar@...ibm.com>,
	warthog9@...nel.org, 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
Subject: Re: ima: use of radix tree cache indexing == massive waste of
 memory?

On Mon, 2010-10-18 at 20:29 +1100, Dave Chinner wrote:
> On Sun, Oct 17, 2010 at 11:36:20PM -0700, Andrew Morton wrote:
> > 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?
> 
> I think Eric said he is going to look at it.
> 
> Cheers,
> 
> Dave.

Am looking at it as well.

Mimi

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