Re: [PATCH 1/4] ext4: use ext4_group_first_block_no()

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On Sun, 2008-02-17 at 15:08 +0900, Akinobu Mita wrote:
> Use ext4_group_first_block_no() and assign the return values to
> ext2_fsblk_t variables.
> 
Acked for ext2/3/4 patches(except a little typo in above change log:
ext4_fsblk_t). ext4 patch is queued in ext4 patch queue
http://repo.or.cz/w/ext4-patch-queue.git

Mingming

> Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
> Cc: Stephen Tweedie <sct@xxxxxxxxxx>
> Cc: adilger@xxxxxxxxxxxxx
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: Mingming Cao <cmm@xxxxxxxxxx>
> Cc: Theodore Tso <tytso@xxxxxxx>
> ---
>  fs/ext4/balloc.c |    6 +++---
>  fs/ext4/xattr.c  |    6 ++----
>  2 files changed, 5 insertions(+), 7 deletions(-)
> 
> Index: 2.6-rc/fs/ext4/xattr.c
> ===================================================================
> --- 2.6-rc.orig/fs/ext4/xattr.c
> +++ 2.6-rc/fs/ext4/xattr.c
> @@ -808,10 +808,8 @@ inserted:
>  			get_bh(new_bh);
>  		} else {
>  			/* We need to allocate a new block */
> -			ext4_fsblk_t goal = le32_to_cpu(
> -					EXT4_SB(sb)->s_es->s_first_data_block) +
> -				(ext4_fsblk_t)EXT4_I(inode)->i_block_group *
> -				EXT4_BLOCKS_PER_GROUP(sb);
> +			ext4_fsblk_t goal = ext4_group_first_block_no(sb,
> +						EXT4_I(inode)->i_block_group);
>  			ext4_fsblk_t block = ext4_new_block(handle, inode,
>  							goal, &error);
>  			if (error)
> Index: 2.6-rc/fs/ext4/balloc.c
> ===================================================================
> --- 2.6-rc.orig/fs/ext4/balloc.c
> +++ 2.6-rc/fs/ext4/balloc.c
> @@ -48,7 +48,6 @@ void ext4_get_group_no_and_offset(struct
>  unsigned ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh,
>  		 ext4_group_t block_group, struct ext4_group_desc *gdp)
>  {
> -	unsigned long start;
>  	int bit, bit_max;
>  	unsigned free_blocks, group_blocks;
>  	struct ext4_sb_info *sbi = EXT4_SB(sb);
> @@ -106,11 +105,12 @@ unsigned ext4_init_block_bitmap(struct s
>  	free_blocks = group_blocks - bit_max;
> 
>  	if (bh) {
> +		ext4_fsblk_t start;
> +
>  		for (bit = 0; bit < bit_max; bit++)
>  			ext4_set_bit(bit, bh->b_data);
> 
> -		start = block_group * EXT4_BLOCKS_PER_GROUP(sb) +
> -			le32_to_cpu(sbi->s_es->s_first_data_block);
> +		start = ext4_group_first_block_no(sb, block_group);
> 
>  		/* Set bits for block and inode bitmaps, and inode table */
>  		ext4_set_bit(ext4_block_bitmap(sb, gdp) - start, bh->b_data);

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