linux-kernel - Re: [PATCH v2] Execute tasklets in the same order they were queued

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Date:	Tue, 12 Feb 2008 14:19:41 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Olof Johansson <olof@...om.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] Execute tasklets in the same order they were queued

On Tue, 12 Feb 2008 16:06:47 -0600
Olof Johansson <olof@...om.net> wrote:

> I noticed this when looking at an openswan issue. Openswan (ab?)uses
> the tasklet API to defer processing of packets in some situations,
> with one packet per tasklet_action(). I started noticing sequences
> of backwards-ordered sequence numbers coming over the wire, since
> new tasklets are always queued at the head of the list but processed
> sequentially.
> 
> Convert it to instead append new entries to the tail of the list. As an
> extra bonus, the splicing code in takeover_tasklets() no longer has to
> iterate over the list.

hm, well, let's see what if any effect this has on networking.

I'll cheerily tag this as to-be-merged-via-git-sched.  Ingo wasn't doing
much anyway.
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