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From: Dipankar Sarma <dipankar@in.ibm.com>
To: Andi Kleen <ak@suse.de>
Cc: akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Allow lockless traversal of notifier lists
Date: Mon, 28 Nov 2005 21:47:47 +0530	[thread overview]
Message-ID: <20051128161747.GA4359@in.ibm.com> (raw)
In-Reply-To: <20051128160547.GA20775@brahms.suse.de>

On Mon, Nov 28, 2005 at 05:05:47PM +0100, Andi Kleen wrote:
>   *
>   *	Returns zero on success, or %-ENOENT on failure.
>   */
> @@ -175,6 +181,7 @@
>  

There should be an smp_read_barrier_depends() here for the first
dereferencing of the notifier block head, I think.

>  	while(nb)
>  	{
> +		smp_read_barrier_depends();
>  		ret=nb->notifier_call(nb,val,v);
>  		if(ret&NOTIFY_STOP_MASK)
>  		{

Thanks
Dipankar

  reply	other threads:[~2005-11-28 16:16 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-11-28 13:37 [PATCH] Allow lockless traversal of notifier lists Andi Kleen
2005-11-28 16:01 ` Dipankar Sarma
2005-11-28 16:05   ` Andi Kleen
2005-11-28 16:17     ` Dipankar Sarma [this message]
2005-11-28 16:27       ` Andi Kleen
2005-11-28 17:42         ` Dipankar Sarma
2005-11-29  0:01           ` Andi Kleen
2005-11-29  6:11             ` Dipankar Sarma

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