Subject: Re: [PATCH 02/36] scsi,rcu: convert call_rcu(fc_rport_free_rcu) to kfree_rcu()

From: Robert Love <[email-masked]>
Date: Tue, 22 Mar 2011 10:28:33 -0700

On Thu, 2011-03-17 at 20:41 -0700, Lai Jiangshan wrote:
> 
> The rcu callback fc_rport_free_rcu() just calls a kfree(),
> so we use kfree_rcu() instead of the call_rcu(fc_rport_free_rcu).
> 
> Signed-off-by: Lai Jiangshan <[email-masked]>
> ---
>  drivers/scsi/libfc/fc_rport.c |   14 +-------------
>  1 files changed, 1 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
> index a7175ad..29abab0 100644
> --- a/drivers/scsi/libfc/fc_rport.c
> +++ b/drivers/scsi/libfc/fc_rport.c
> @@ -151,18 +151,6 @@ static struct fc_rport_priv *fc_rport_create(struct fc_lport *lport,
>  }
>  
>  /**
> - * fc_rport_free_rcu() - Free a remote port
> - * @rcu: The rcu_head structure inside the remote port
> - */
> -static void fc_rport_free_rcu(struct rcu_head *rcu)
> -{
> -	struct fc_rport_priv *rdata;
> -
> -	rdata = container_of(rcu, struct fc_rport_priv, rcu);
> -	kfree(rdata);
> -}
> -
> -/**
>   * fc_rport_destroy() - Free a remote port after last reference is released
>   * @kref: The remote port's kref
>   */
> @@ -171,7 +159,7 @@ static void fc_rport_destroy(struct kref *kref)
>  	struct fc_rport_priv *rdata;
>  
>  	rdata = container_of(kref, struct fc_rport_priv, kref);
> -	call_rcu(&rdata->rcu, fc_rport_free_rcu);
> +	kfree_rcu(rdata, rcu);

I think this last line should be:

kfree_rcu(rdata, &rdata->rcu);

Thanks, //Rob