linux-kernel - Re: spin_lock after get_cpu

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Message-ID: <87ve3n0yg2.fsf@saeurebad.de>
Date:	Sun, 16 Mar 2008 11:12:45 +0100
From:	Johannes Weiner <hannes@...urebad.de>
To:	"Peter Teoh" <htmldeveloper@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: spin_lock after get_cpu_var()

Hi Peter,

"Peter Teoh" <htmldeveloper@...il.com> writes:

> I find it quite puzzling (no where else in kernel source is this
> found) that you would want to apply spin_lock() after get_cpu_var().
> The fddef is already percpu, so there is no need to lock it, right?
>
> I submitted this patch before, but got no response, just trying my
> luck this time :-).

http://lkml.org/lkml/2008/3/14/208

	Hannes
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