From: Jens Axboe <axboe@suse.de>
To: Jari Ruusu <jari.ruusu@pp.inet.fi>
Cc: "steve j. kondik" <shade@chemlab.org>, linux-kernel@vger.kernel.org
Subject: Re: encrypted swap on loop in 2.4.10-pre12?
Date: Thu, 20 Sep 2001 08:13:53 +0200 [thread overview]
Message-ID: <20010920081353.H588@suse.de> (raw)
In-Reply-To: <1000912739.17522.2.camel@discord> <3BA907F6.3586811C@pp.inet.fi>
In-Reply-To: <3BA907F6.3586811C@pp.inet.fi>
On Thu, Sep 20 2001, Jari Ruusu wrote:
> "steve j. kondik" wrote:
> > i've been using encrypted swap over loopdev using the new cryptoapi
> > patches. i just built a 2.4.10-pre12 kernel and i got a panic doing
> > mkswap on the loopdev. the mkswap process becomes unkillable after this
> > and never finishes. this is repeatable everytime. i've had no problems
> > whatsoever until this kernel even under high load.. any ideas? :>
>
> Cryptoapi can't be used to encrypt swap. It has nasties like sleeping in
> make_request_fn() and potential memory allocation deadlock.
sleeping in make_request_fn is not a nasty in itself, btw. in fact loop
just needs an emergency page pool for swap to be perfectly safe.
--
Jens Axboe
next prev parent reply other threads:[~2001-09-20 6:16 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-19 15:18 encrypted swap on loop in 2.4.10-pre12? steve j. kondik
2001-09-19 15:37 ` Jens Axboe
2001-09-19 17:38 ` steve j. kondik
2001-09-19 21:02 ` Jari Ruusu
2001-09-20 6:13 ` Jens Axboe [this message]
2001-09-20 12:08 ` Jari Ruusu
2001-09-20 12:25 ` Jens Axboe
2001-09-20 13:17 ` steve j. kondik
2001-09-20 17:04 ` Jari Ruusu
2001-09-20 17:20 ` steve j. kondik
2001-09-20 17:55 ` Jari Ruusu
2001-09-20 18:59 ` Michael H. Warfield
2001-09-21 0:36 ` steve j. kondik
2001-09-21 9:15 ` Jari Ruusu
2001-09-21 14:52 ` steve j. kondik
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