From: Christophe Saout <christophe@saout.de>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Joe Thornber <thornber@redhat.com>,
Mike Christie <mikenc@us.ibm.com>, Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org
Subject: Re: dm-crypt using kthread
Date: Mon, 16 Feb 2004 04:10:31 +0100 [thread overview]
Message-ID: <1076901031.5601.55.camel@leto.cs.pocnet.net> (raw)
In-Reply-To: <403031DF.9050506@pobox.com>
Am Mo, den 16.02.2004 schrieb Jeff Garzik um 03:58:
> >>>+ if ((i - bio->bi_idx) == (MIN_BIO_PAGES - 1))
> >>>+ gfp_mask = (gfp_mask | __GFP_NOWARN) & ~__GFP_WAIT;
> >>
> >>If the caller said they can wait, why not wait?
> >
> > How can the caller say this?
>
> There is a gfp_mask there :)
I still don't get it. :(
The caller is the crypt_map function which is called by dm which is
called by generic_make_request. There are no gfp_masks there.
> This sounds like a lot of work, just to reimplement what a semaphore
> does for you :)
It sounds more complicated than it is...
In my very first version I used semaphores. I'm turning in circles. ;)
> There is typically one special case -- killing your thread on shutdown.
> The typical solution is to set a flag thread_shutdown, and then up().
I'm using the kthread primitives, kthread_stop kills the thread using a
signal.
next prev parent reply other threads:[~2004-02-16 3:11 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-11 15:33 Oopsing cryptoapi (or loop device?) on 2.6.* Michal Kwolek
2004-02-11 18:41 ` Jari Ruusu
2004-02-15 2:35 ` Jan Rychter
2004-02-15 14:51 ` Jari Ruusu
2004-02-15 16:38 ` Jari Ruusu
2004-02-16 0:26 ` James Morris
2004-02-18 14:07 ` Bill Davidsen
2004-02-16 12:22 ` Jan Rychter
2004-02-17 14:09 ` Jari Ruusu
2004-02-17 19:14 ` Jan Rychter
2004-02-18 14:06 ` Jari Ruusu
2004-02-18 21:40 ` Jan Rychter
2004-02-19 13:34 ` Jari Ruusu
2004-02-11 22:54 ` bill davidsen
2004-02-15 17:34 ` Christophe Saout
2004-02-15 18:02 ` Christoph Hellwig
2004-02-15 18:42 ` Christophe Saout
2004-02-15 18:53 ` Christoph Hellwig
2004-02-15 19:36 ` Christophe Saout
2004-02-15 19:46 ` Christoph Hellwig
2004-02-15 20:24 ` kthread vs. dm-daemon (was: Oopsing cryptoapi (or loop device?) on 2.6.*) Christophe Saout
2004-02-15 22:13 ` kthread vs. dm-daemon Mike Christie
2004-02-16 0:04 ` Christophe Saout
2004-02-16 1:04 ` Mike Christie
2004-02-16 1:29 ` Christophe Saout
2004-02-16 3:02 ` kthread vs. dm-daemon (was: Oopsing cryptoapi (or loop device?) on 2.6.*) Rusty Russell
2004-02-16 13:27 ` Christophe Saout
2004-02-16 16:42 ` Christophe Saout
2004-02-16 13:48 ` Joe Thornber
2004-02-16 1:44 ` dm-crypt using kthread " Christophe Saout
2004-02-16 1:53 ` Andrew Morton
2004-02-16 2:07 ` Grzegorz Kulewski
2004-02-16 3:03 ` Christophe Saout
2004-02-16 3:22 ` Grzegorz Kulewski
2004-02-16 4:05 ` dm-crypt using kthread Jeff Garzik
2004-02-16 4:14 ` Grzegorz Kulewski
2004-02-16 10:15 ` Christophe Saout
2004-02-16 9:54 ` dm-crypt using kthread (was: Oopsing cryptoapi (or loop device?) on 2.6.*) Christophe Saout
2004-03-01 22:18 ` Matthias Urlichs
2004-03-01 22:51 ` Christophe Saout
2004-03-01 23:22 ` Matthias Urlichs
2004-02-16 2:58 ` Christophe Saout
2004-02-16 7:28 ` David Wagner
2004-02-16 10:11 ` Christophe Saout
2004-02-18 14:15 ` dm-crypt using kthread Bill Davidsen
2004-02-16 2:07 ` dm-crypt using kthread (was: Oopsing cryptoapi (or loop device?) on 2.6.*) Andrew Morton
2004-02-16 2:17 ` dm-crypt using kthread Jeff Garzik
2004-02-16 2:53 ` dm-crypt using kthread (was: Oopsing cryptoapi (or loop device?) on 2.6.*) Christophe Saout
2004-02-16 2:10 ` dm-crypt using kthread Jeff Garzik
2004-02-16 2:40 ` Christophe Saout
2004-02-16 2:58 ` Jeff Garzik
2004-02-16 3:10 ` Christophe Saout [this message]
2004-02-16 13:04 ` Christophe Saout
2004-02-16 19:09 ` Jeff Garzik
[not found] <1o4ML-V4-5@gated-at.bofh.it>
[not found] ` <1pypu-2eR-25@gated-at.bofh.it>
[not found] ` <1pySs-2Hu-13@gated-at.bofh.it>
[not found] ` <1pzve-3a8-21@gated-at.bofh.it>
[not found] ` <1pzEW-3hA-11@gated-at.bofh.it>
[not found] ` <1pAhG-3RJ-29@gated-at.bofh.it>
[not found] ` <1pArj-3ZE-31@gated-at.bofh.it>
[not found] ` <1pG3C-kZ-9@gated-at.bofh.it>
[not found] ` <1pGdl-qX-11@gated-at.bofh.it>
[not found] ` <1pGn1-E8-23@gated-at.bofh.it>
[not found] ` <1pHj1-1q2-11@gated-at.bofh.it>
2004-02-16 3:58 ` Andi Kleen
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