linux-kernel - Re: [PATCH 2.6.24-rc8-mm1 05/15] IPC/semaphores: remove one unused parameter from semctl

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Date:	Thu, 31 Jan 2008 09:32:46 +0100
From:	Nadia Derbey <Nadia.Derbey@...l.net>
To:	pierre.peiffer@...l.net
Cc:	linux-kernel@...r.kernel.org, containers@...ts.linux-foundation.org
Subject: Re: [PATCH 2.6.24-rc8-mm1 05/15] IPC/semaphores: remove one unused
 parameter from semctl_down()

pierre.peiffer@...l.net wrote:
> From: Pierre Peiffer <pierre.peiffer@...l.net>
> 
> semctl_down() takes one unused parameter: semnum.
> This patch proposes to get rid of it.
> 
> Signed-off-by: Pierre Peiffer <pierre.peiffer@...l.net>
> Acked-by: Serge Hallyn <serue@...ibm.com>
> ---
>  ipc/sem.c |    6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> Index: b/ipc/sem.c
> ===================================================================
> --- a/ipc/sem.c
> +++ b/ipc/sem.c
> @@ -882,8 +882,8 @@ static inline unsigned long copy_semid_f
>   * to be held in write mode.
>   * NOTE: no locks must be held, the rw_mutex is taken inside this function.
>   */
> -static int semctl_down(struct ipc_namespace *ns, int semid, int semnum,
> -		int cmd, int version, union semun arg)
> +static int semctl_down(struct ipc_namespace *ns, int semid,
> +		       int cmd, int version, union semun arg)
>  {
>  	struct sem_array *sma;
>  	int err;
> @@ -974,7 +974,7 @@ asmlinkage long sys_semctl (int semid, i
>  		return err;
>  	case IPC_RMID:
>  	case IPC_SET:
> -		err = semctl_down(ns,semid,semnum,cmd,version,arg);
> +		err = semctl_down(ns, semid, cmd, version, arg);
>  		return err;
>  	default:
>  		return -EINVAL;
> 

Looks like semnum is only used in semctl_main(). Why not removing it 
from semctl_nolock() too?

Regards,
Nadia



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