linux-kernel - Re: Bug of dm-crypt?

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Message-ID: <20090227113927.GA24024@gondor.apana.org.au>
Date:	Fri, 27 Feb 2009 19:39:27 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Milan Broz <mbroz@...hat.com>
Cc:	Huang Ying <ying.huang@...el.com>, linux-kernel@...r.kernel.org,
	linux-crypto@...r.kernel.org
Subject: Re: Bug of dm-crypt?

On Fri, Feb 27, 2009 at 09:41:02AM +0100, Milan Broz wrote:
> 
> Can you send me backtrace from that panic?
> 
> What's wrong in async callback now - mempool_free using async_req directly?

The req you get in the completion function is not necessarily
the req that you started with.  The only thing you can rely on
is req->data.

> (Btw in some previous discussuion I asked if cryptd can be used
> for some kind of parallel speedup for dm-crypt in async mode and response
> was that cryptd "is only meant to be a demo showing how an async
> implementation should be written".
> 
> So this changed to real working thread for AES-NI?)

Yes we changed it :) cryptd is no longer for fun only.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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