From: Alasdair G Kergon <agk@redhat.com>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] 2/5: Device-mapper: kcopyd
Date: Thu, 3 Jun 2004 14:28:52 +0100 [thread overview]
Message-ID: <20040603132852.GD6627@agk.surrey.redhat.com> (raw)
In-Reply-To: <20040602204126.2bd0565c.akpm@osdl.org>
On Wed, Jun 02, 2004 at 08:41:26PM -0700, Andrew Morton wrote:
> What is the page pool for?
On the I/O path it can't wait for pages to be allocated without
risking deadlock. (cf. pvmove in 2.4)
> Why are the pooled pages locked?
I can't see that having any effect (i.e. unnecessary).
> > +static int __init jobs_init(void)
> > + INIT_LIST_HEAD(&_complete_jobs);
> > + INIT_LIST_HEAD(&_io_jobs);
> > + INIT_LIST_HEAD(&_pages_jobs);
> Do these lists need to be initialised a second time?
No:-)
Alasdair
--
agk@redhat.com
next prev parent reply other threads:[~2004-06-03 13:29 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-02 15:41 Alasdair G Kergon
2004-06-02 16:15 ` Andreas Dilger
2004-06-02 16:50 ` Kevin Corry
2004-07-03 5:44 ` Daniel Phillips
2004-06-02 21:15 ` Alasdair G Kergon
2004-06-03 3:41 ` Andrew Morton
2004-06-03 13:28 ` Alasdair G Kergon [this message]
2004-06-10 6:18 ` Andrew Morton
2004-06-10 8:16 ` Kevin Corry
2004-06-10 18:12 ` Andrew Morton
2004-06-10 14:55 ` Alasdair G Kergon
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