linux-kernel - Re: [PATCH 7/9] fs/nilfs2/super.c: Use printf extension %pV

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Date:	Thu, 11 Nov 2010 11:38:20 +0900 (JST)
From:	Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>
To:	joe@...ches.com
Cc:	linux-kernel@...r.kernel.org, konishi.ryusuke@....ntt.co.jp,
	linux-nilfs@...r.kernel.org
Subject: Re: [PATCH 7/9] fs/nilfs2/super.c: Use printf extension %pV

On Tue,  9 Nov 2010 16:35:21 -0800, Joe Perches wrote:
> Using %pV reduces the number of printk calls and
> eliminates any possible message interleaving from
> other printk calls.
> 
> Signed-off-by: Joe Perches <joe@...ches.com>
> ---
>  fs/nilfs2/super.c |   23 ++++++++++++++++-------
>  1 files changed, 16 insertions(+), 7 deletions(-)

Applied to the nilfs tree.

Thank you.

Ryusuke Konishi
 
> diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
> index f804d41..bef8cc6 100644
> --- a/fs/nilfs2/super.c
> +++ b/fs/nilfs2/super.c
> @@ -111,12 +111,17 @@ void nilfs_error(struct super_block *sb, const char *function,
>  		 const char *fmt, ...)
>  {
>  	struct nilfs_sb_info *sbi = NILFS_SB(sb);
> +	struct va_format vaf;
>  	va_list args;
>  
>  	va_start(args, fmt);
> -	printk(KERN_CRIT "NILFS error (device %s): %s: ", sb->s_id, function);
> -	vprintk(fmt, args);
> -	printk("\n");
> +
> +	vaf.fmt = fmt;
> +	vaf.va = &args;
> +
> +	printk(KERN_CRIT "NILFS error (device %s): %s: %pV\n",
> +	       sb->s_id, function, &vaf);
> +
>  	va_end(args);
>  
>  	if (!(sb->s_flags & MS_RDONLY)) {
> @@ -136,13 +141,17 @@ void nilfs_error(struct super_block *sb, const char *function,
>  void nilfs_warning(struct super_block *sb, const char *function,
>  		   const char *fmt, ...)
>  {
> +	struct va_format vaf;
>  	va_list args;
>  
>  	va_start(args, fmt);
> -	printk(KERN_WARNING "NILFS warning (device %s): %s: ",
> -	       sb->s_id, function);
> -	vprintk(fmt, args);
> -	printk("\n");
> +
> +	vaf.fmt = fmt;
> +	vaf.va = &args;
> +
> +	printk(KERN_WARNING "NILFS warning (device %s): %s: %pV\n",
> +	       sb->s_id, function, &vaf);
> +
>  	va_end(args);
>  }
>  
> -- 
> 1.7.3.1.g432b3.dirty
> 
> --
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