linux-kernel - Re: [dm-devel] Re: next-20081125: crypto hard disk gets unaccessable

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Date:	Mon, 1 Dec 2008 12:57:49 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Milan Broz <mbroz@...hat.com>
Cc:	Nico -telmich- Schottelius <nico-linux-next@...ottelius.org>,
	device-mapper development <dm-devel@...hat.com>,
	Christophe Saout <christophe@...ut.de>,
	LKML <linux-kernel@...r.kernel.org>, Herbert@...hat.com,
	linux-next@...r.kernel.org, linux-crypto@...r.kernel.org
Subject: Re: [dm-devel] Re: next-20081125: crypto hard disk gets
	unaccessable

On Mon, Dec 01, 2008 at 01:16:06AM +0100, Milan Broz wrote:
>
> > [69186.618468]  [<ffffffffa027226a>] ? crypto_cbc_encrypt+0xfa/0x15a [cbc]
> > [69186.618481]  [<ffffffffa0285705>] ? aes_encrypt+0x0/0x7 [aes_x86_64]
> > [69186.618494]  [<ffffffffa020667d>] ? async_encrypt+0x35/0x3a [crypto_blkcipher]
> > [69186.618509]  [<ffffffffa0269a6f>] ? crypt_convert+0x1d2/0x253 [dm_crypt]
> > [69186.618522]  [<ffffffffa0269ed6>] ? kcryptd_crypt+0x3e6/0x407 [dm_crypt]
> > [69186.618533]  [<ffffffffa0269af0>] ? kcryptd_crypt+0x0/0x407 [dm_crypt]
> 
> I assume that crypto run here synchronously (not through asynchronous completion callback).
> 
> Herbert - is my guess ok? (The asynchronous handling in dm-crypt was the only part changed recently.)
> (And I think that except crypto hw nobody uses asynchronous mode yet by default.)

Yes that's definitely synchronous.

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