linux-kernel - Re: [PATCH 1/2] module: export param_free

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Message-ID: <876141icxu.fsf@rustcorp.com.au>
Date:	Thu, 27 Aug 2015 13:45:57 +0930
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Dan Streetman <ddstreet@...e.org>,
	Seth Jennings <sjennings@...iantweb.net>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Linux-MM <linux-mm@...ck.org>, Dan Streetman <ddstreet@...e.org>
Subject: Re: [PATCH 1/2] module: export param_free_charp()

Dan Streetman <ddstreet@...e.org> writes:
> Change the param_free_charp() function from static to exported.
>
> It is used by zswap in the next patch.
>
> Signed-off-by: Dan Streetman <ddstreet@...e.org>

Acked-by: Rusty Russell <rusty@...tcorp.com.au>

Thanks!
Rusty.

> ---
>  include/linux/moduleparam.h | 1 +
>  kernel/params.c             | 3 ++-
>  2 files changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h
> index c12f214..52666d9 100644
> --- a/include/linux/moduleparam.h
> +++ b/include/linux/moduleparam.h
> @@ -386,6 +386,7 @@ extern int param_get_ullong(char *buffer, const struct kernel_param *kp);
>  extern const struct kernel_param_ops param_ops_charp;
>  extern int param_set_charp(const char *val, const struct kernel_param *kp);
>  extern int param_get_charp(char *buffer, const struct kernel_param *kp);
> +extern void param_free_charp(void *arg);
>  #define param_check_charp(name, p) __param_check(name, p, char *)
>  
>  /* We used to allow int as well as bool.  We're taking that away! */
> diff --git a/kernel/params.c b/kernel/params.c
> index b6554aa..93a380a 100644
> --- a/kernel/params.c
> +++ b/kernel/params.c
> @@ -325,10 +325,11 @@ int param_get_charp(char *buffer, const struct kernel_param *kp)
>  }
>  EXPORT_SYMBOL(param_get_charp);
>  
> -static void param_free_charp(void *arg)
> +void param_free_charp(void *arg)
>  {
>  	maybe_kfree_parameter(*((char **)arg));
>  }
> +EXPORT_SYMBOL(param_free_charp);
>  
>  const struct kernel_param_ops param_ops_charp = {
>  	.set = param_set_charp,
> -- 
> 2.1.0
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