linux-kernel - Re: [PATCH 4/4] mqueue namespace: adapt sysctl

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Date:	Tue, 24 Feb 2009 14:16:51 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"Serge E. Hallyn" <serue@...ibm.com>
Cc:	adobriyan@...il.com, clg@...ibm.com, linux-kernel@...r.kernel.org,
	containers@...ts.osdl.org
Subject: Re: [PATCH 4/4] mqueue namespace: adapt sysctl

On Tue, 24 Feb 2009 16:02:56 -0600
"Serge E. Hallyn" <serue@...ibm.com> wrote:

> +#ifdef CONFIG_PROC_SYSCTL
> +static int proc_mq_dointvec(ctl_table *table, int write, struct file *filp,
> +	void __user *buffer, size_t *lenp, loff_t *ppos)
> +{
> +	struct ctl_table mq_table;
> +	memcpy(&mq_table, table, sizeof(mq_table));
> +	mq_table.data = get_mq(table);
> +
> +	return proc_dointvec(&mq_table, write, filp, buffer, lenp, ppos);
> +}
> +
> +static int proc_mq_dointvec_minmax(ctl_table *table, int write,
> +	struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos)
> +{
> +	struct ctl_table mq_table;
> +	memcpy(&mq_table, table, sizeof(mq_table));
> +	mq_table.data = get_mq(table);
> +
> +	return proc_dointvec_minmax(&mq_table, write, filp, buffer,
> +					lenp, ppos);
> +}
> +#else
> +proc_handler *proc_mq_dointvec = NULL;
> +proc_handler *proc_mq_dointvec_minmax = NULL;
> +#endif

looks odd.  Was this

--- a/ipc/mq_sysctl.c~mqueue-namespace-adapt-sysctl-update-fix
+++ a/ipc/mq_sysctl.c
@@ -52,8 +52,8 @@ static int proc_mq_dointvec_minmax(ctl_t
 					lenp, ppos);
 }
 #else
-proc_handler *proc_mq_dointvec = NULL;
-proc_handler *proc_mq_dointvec_minmax = NULL;
+#define proc_mq_dointvec NULL
+#define proc_mq_dointvec_minmax NULL
 #endif
 
 static int msg_max_limit_min = MIN_MSGMAX;
_

intended?
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