linux-kernel - Re: [PATCH 1/9] Change the idr structure

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Message-ID: <20080530082241.GE4943@linux.vnet.ibm.com>
Date:	Fri, 30 May 2008 01:22:41 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Nadia.Derbey@...l.net
Cc:	manfred@...orfullife.com, lnxninja@...ux.vnet.ibm.com,
	linux-kernel@...r.kernel.org, efault@....de,
	akpm@...ux-foundation.org
Subject: Re: [PATCH 1/9] Change the idr structure

On Wed, May 07, 2008 at 01:35:54PM +0200, Nadia.Derbey@...l.net wrote:
> [PATCH 01/09]
> 
> This patch adds an rcu_head to the idr_layer structure in order to free it
> after a grace period.

Reviewed-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>

> Signed-off-by: Nadia Derbey <Nadia.Derbey@...l.net>
> 
> ---
>  include/linux/idr.h |    2 ++
>  1 file changed, 2 insertions(+)
> 
> Index: linux-2.6.25-mm1/include/linux/idr.h
> ===================================================================
> --- linux-2.6.25-mm1.orig/include/linux/idr.h	2008-05-06 17:14:24.000000000 +0200
> +++ linux-2.6.25-mm1/include/linux/idr.h	2008-05-06 17:20:58.000000000 +0200
> @@ -15,6 +15,7 @@
>  #include <linux/types.h>
>  #include <linux/bitops.h>
>  #include <linux/init.h>
> +#include <linux/rcupdate.h>
> 
>  #if BITS_PER_LONG == 32
>  # define IDR_BITS 5
> @@ -51,6 +52,7 @@ struct idr_layer {
>  	unsigned long		 bitmap; /* A zero bit means "space here" */
>  	struct idr_layer	*ary[1<<IDR_BITS];
>  	int			 count;	 /* When zero, we can release it */
> +	struct rcu_head		 rcu_head;
>  };
> 
>  struct idr {
> 
> --
--
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