linux-kernel - Re: [PATCH 1/2] fat: add fat_msg

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Date:	Sun, 13 May 2012 08:45:08 -0700
From:	Joe Perches <joe@...ches.com>
To:	Namjae Jeon <linkinjeon@...il.com>
Cc:	hirofumi@...l.parknet.co.jp, linux-kernel@...r.kernel.org,
	Amit Sahrawat <amit.sahrawat83@...il.com>
Subject: Re: [PATCH 1/2] fat: add fat_msg_ratelimit.

On Sun, 2012-05-13 at 07:03 -0400, Namjae Jeon wrote:
> I tried to add fat_msg_ratelimit to limit many message at once.
> 
> Signed-off-by: Namjae Jeon <linkinjeon@...il.com>
> Signed-off-by: Amit Sahrawat <amit.sahrawat83@...il.com>
> ---
>  fs/fat/fat.h  |    9 +++++++--
>  fs/fat/misc.c |   18 ++++++++++--------
>  2 files changed, 17 insertions(+), 10 deletions(-)
> 
> diff --git a/fs/fat/fat.h b/fs/fat/fat.h
> index 951d12b..3c581c7 100644
> --- a/fs/fat/fat.h
> +++ b/fs/fat/fat.h
> @@ -333,8 +333,13 @@ void __fat_fs_error(struct super_block *sb, int report, const char *fmt, ...);
>  	__fat_fs_error(sb, 1, fmt , ## args)
>  #define fat_fs_error_ratelimit(sb, fmt, args...) \
>  	__fat_fs_error(sb, __ratelimit(&MSDOS_SB(sb)->ratelimit), fmt , ## args)
> -__printf(3, 4) __cold
> -void fat_msg(struct super_block *sb, const char *level, const char *fmt, ...);
> +__printf(4, 5) __cold
> +void __fat_msg(struct super_block *sb, int report, const char *level,
> +			const char *fmt, ...);
> +#define	fat_msg(sb, level, fmt, args...)		\
> +	__fat_msg(sb, 1, level, fmt, ## args)
> +#define	fat_msg_ratelimit(sb, level, fmt, args...)	\
> +	__fat_msg(sb, __ratelimit(&MSDOS_SB(sb)->ratelimit), level, fmt, ## args)

I think it better to move the test above the call
and not change the fat_msg function at all.

#define fat_msg_ratelimit(sb, level, fmt, args...)		\
do {								\
	if (! __ratelimit(&MSDOS_SB(sb)->ratelimit))		\
		fsg_msg(sb, level, fmt, ##args);		\
} while (0)


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