linux-kernel - Re: [PATCH v1 8/9] ext4: small cleanup in ext4_commit

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Message-ID: <20120322101133.GG14485@quack.suse.cz>
Date:	Thu, 22 Mar 2012 11:11:33 +0100
From:	Jan Kara <jack@...e.cz>
To:	Artem Bityutskiy <dedekind1@...il.com>
Cc:	Ted Tso <tytso@....edu>,
	Ext4 Mailing List <linux-ext4@...r.kernel.org>,
	Linux FS Maling List <linux-fsdevel@...r.kernel.org>,
	Linux Kernel Maling List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 8/9] ext4: small cleanup in ext4_commit_super

On Tue 20-03-12 16:41:28, Artem Bityutskiy wrote:
> From: Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>
> 
> We have many 'EXT4_SB(sb)' references in 'ext4_commit_super()' and I am going
> to add another one, so I think the function will be a bit tidier if I introduce
> a separate 'sbi' pointer for the ext4 superblock.
> 
> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>
  Good cleanup.
Reviewed-by: Jan Kara <jack@...e.cz>

								Honza
> ---
>  fs/ext4/super.c |   18 +++++++++---------
>  1 files changed, 9 insertions(+), 9 deletions(-)
> 
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index 7d453f7..64f3a6a 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -4132,8 +4132,9 @@ static int ext4_load_journal(struct super_block *sb,
>  
>  static int ext4_commit_super(struct super_block *sb, int sync)
>  {
> -	struct ext4_super_block *es = EXT4_SB(sb)->s_es;
> -	struct buffer_head *sbh = EXT4_SB(sb)->s_sbh;
> +	struct ext4_sb_info *sbi = EXT4_SB(sb);
> +	struct ext4_super_block *es = sbi->s_es;
> +	struct buffer_head *sbh = sbi->s_sbh;
>  	int error = 0;
>  
>  	if (!sbh || block_device_ejected(sb))
> @@ -4174,18 +4175,17 @@ static int ext4_commit_super(struct super_block *sb, int sync)
>  		es->s_wtime = cpu_to_le32(get_seconds());
>  	if (sb->s_bdev->bd_part)
>  		es->s_kbytes_written =
> -			cpu_to_le64(EXT4_SB(sb)->s_kbytes_written +
> +			cpu_to_le64(sbi->s_kbytes_written +
>  			    ((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
> -			      EXT4_SB(sb)->s_sectors_written_start) >> 1));
> +			      sbi->s_sectors_written_start) >> 1));
>  	else
> -		es->s_kbytes_written =
> -			cpu_to_le64(EXT4_SB(sb)->s_kbytes_written);
> +		es->s_kbytes_written = cpu_to_le64(sbi->s_kbytes_written);
>  	ext4_free_blocks_count_set(es,
> -			EXT4_C2B(EXT4_SB(sb), percpu_counter_sum_positive(
> -				&EXT4_SB(sb)->s_freeclusters_counter)));
> +			EXT4_C2B(sbi, percpu_counter_sum_positive(
> +				&sbi->s_freeclusters_counter)));
>  	es->s_free_inodes_count =
>  		cpu_to_le32(percpu_counter_sum_positive(
> -				&EXT4_SB(sb)->s_freeinodes_counter));
> +				&sbi->s_freeinodes_counter));
>  	BUFFER_TRACE(sbh, "marking dirty");
>  	mark_buffer_dirty(sbh);
>  	if (sync) {
> -- 
> 1.7.7.6
> 
> --
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