linux-kernel - Re: [PATH -mm -v2] Fix a race condtion of oops_in

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Message-ID: <20081029083434.GC6364@elte.hu>
Date:	Wed, 29 Oct 2008 09:34:34 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Huang Ying <ying.huang@...el.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATH -mm -v2] Fix a race condtion of oops_in_progress


* Huang Ying <ying.huang@...el.com> wrote:

> Fix a race condition accessing oops_in_progress.  Which may be 
> changed on multiple CPU simultaneously, but it is changed via 
> non-atomic operation ++/--.  This patch changes the definition of 
> oops_in_process from int to atomic_t, and accessing method to atomic 
> operations.
> 
> 
> ChangeLog
> 
> v2:
> 
> - Includes fixes from Andrew Moton.
> 
> - Re-based on Matthew Wilcox's new atomic_t patch.

hm, there are a couple of places now that do atomic_set(,1) - they 
should be atomic_inc(), correct?

	Ingo
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