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Date: Sun, 1 Sep 2002 21:05:04 +0200
From: Ralf Baechle <ralf@uni-koblenz.de>
To: Oliver Neukum <oliver@neukum.name>
Cc: linux-kernel@vger.kernel.org
Subject: Re: question on spinlocks
Message-ID: <20020901210504.A22882@bacchus.dhis.org>
References: <200209011927.53853.oliver@neukum.name>
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In-Reply-To: <200209011927.53853.oliver@neukum.name>; from oliver@neukum.name on Sun, Sep 01, 2002 at 07:27:53PM +0200
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On Sun, Sep 01, 2002 at 07:27:53PM +0200, Oliver Neukum wrote:

> is the following sequence legal ?
> 
> spin_lock_irqsave(...);
> ...
> spin_unlock(...);
> schedule();
> spin_lock(...);
> ...
> spin_unlock_irqrestore(...);

No; spin_lock_irqsave/spin_unlock_irqrestore and spin_lock/spin_unlock
have to be used in matching pairs.

  Ralf
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