linux-kernel - Re: [PATCH] percpu: Fix rollback in pcpu_embed_first

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Message-ID: <20120509170603.GA24636@google.com>
Date:	Wed, 9 May 2012 10:06:03 -0700
From:	Tejun Heo <tj@...nel.org>
To:	Michael Holzheu <holzheu@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] percpu: Fix rollback in pcpu_embed_first_chunk()

Hello,

On Wed, May 09, 2012 at 02:39:48PM +0200, Michael Holzheu wrote:
> From: Michael Holzheu <holzheu@...ux.vnet.ibm.com>
> Subject: percpu: Fix rollback in pcpu_embed_first_chunk()
> 
> The "out_free_areas" rollback in pcpu_embed_first_chunk calls the
> free_fn() function for all elements in area[]. This is not correct
> because not all elements have been allocated.
> 
> To fix this we call free_fn() only for allocated elements.

There's already a pending fix which fixes this and another more
serious problem, which I forgot to push.  I'll push it out today.

  http://article.gmane.org/gmane.linux.kernel/1288808

Thanks.

-- 
tejun
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