linux-kernel - Re: [PATCH] rculist: fix borked __list_for_each

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Message-ID: <20101215232005.GB6595@linux.vnet.ibm.com>
Date:	Wed, 15 Dec 2010 15:20:05 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Mariusz Kozlowski <mk@....zgora.pl>
Cc:	Dipankar Sarma <dipankar@...ibm.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rculist: fix borked __list_for_each_rcu() macro

On Wed, Dec 15, 2010 at 11:11:12PM +0100, Mariusz Kozlowski wrote:
> This restores parentheses blance.

Good catch, queued!!!

This does not actually appear to be in use anywhere in the kernel any
more, so I queued this for 2.6.38 rather than in the 2.6.37 urgent queue.
So, just out of curiosity, how did you find this one?

Hmmm...  Maybe we should just delete __list_for_each_rcu.  ;-)

							Thanx, Paul

> Signed-off-by: Mariusz Kozlowski <mk@....zgora.pl>
> ---
>  include/linux/rculist.h |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/include/linux/rculist.h b/include/linux/rculist.h
> index f31ef61..70d3ba5 100644
> --- a/include/linux/rculist.h
> +++ b/include/linux/rculist.h
> @@ -244,7 +244,7 @@ static inline void list_splice_init_rcu(struct list_head *list,
>  #define __list_for_each_rcu(pos, head) \
>  	for (pos = rcu_dereference_raw(list_next_rcu(head)); \
>  		pos != (head); \
> -		pos = rcu_dereference_raw(list_next_rcu((pos)))
> +		pos = rcu_dereference_raw(list_next_rcu(pos)))
> 
>  /**
>   * list_for_each_entry_rcu	-	iterate over rcu list of given type
> -- 
> 1.7.0.4
> 
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