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Date: Wed, 19 Oct 2011 18:25:34 +0200
From: Andi Kleen <andi@firstfloor.org>
To: Stephen Bromfield <s.bromfield@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>, linux-kernel@vger.kernel.org,
        dm-cache@googlegroups.com
Subject: Re: [RFC][PATCH] dm-cache (block level disk cache target): UPDATE
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On Wed, Oct 19, 2011 at 12:17:58PM -0400, Stephen Bromfield wrote:
> Mr.  Kleen,
> 
> We are working to make a patch for the 3.1 kernel. Till the patch is
> complete, we hope that some of our users can benefit from this update.
> As for your other comments, DM-cache is a work in progress and we will
> try to address some of your issues in later patches. Thanks for your
> feedback.

Given the GFP_KERNEL issues in the IO path I have doubts the whole
thing will run reliably under high load / low memory.

So you should probably mark it "experimental / may eat your data"
for now.

-Andi