linux-ext4 - Re: [PATCH 2/3] Ext2: mark inode dirty after the function dquot_free_block

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Date:	Wed, 6 Feb 2013 13:44:20 +0100
From:	Jan Kara <jack@...e.cz>
To:	Wang shilong <wangshilong1991@...il.com>
Cc:	jack@...e.cz, linux-ext4@...r.kernel.org,
	Wang Shilong <wangsl-fnst@...fujitsu.com>
Subject: Re: [PATCH 2/3] Ext2: mark inode dirty after the function
 dquot_free_block_nodirty is called

  Hello,

On Wed 06-02-13 14:14:27, Wang shilong wrote:
> From: Wang Shilong <wangsl-fnst@...fujitsu.com>
> 
> We should mark inode dirty after the function dquot_free_block_nodirty
> is called.Besides,add a check whether it is necessary to call
> dquot_free_block_nodirty functon.
  Thanks for the patch. Just one comment below.

> Signed-off-by: Wang Shilong <wangsl-fnst@...fujitsu.com>
> ---
>  fs/ext2/balloc.c | 15 ++++++++++-----
>  fs/ext2/xattr.c  |  1 +
>  2 files changed, 11 insertions(+), 5 deletions(-)
> 
> diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
> index 22993a0..9d372bf 100644
> --- a/fs/ext2/balloc.c
> +++ b/fs/ext2/balloc.c
> @@ -568,8 +568,11 @@ do_more:
>  	}
>  error_return:
>  	brelse(bitmap_bh);
> -	release_blocks(sb, freed);
> -	dquot_free_block_nodirty(inode, freed);
> +	if (freed) {
> +		release_blocks(sb, freed);
> +		dquot_free_block_nodirty(inode, freed);
> +		mark_inode_dirty(inode);
> +	}
>  }
>  
>  /**
> @@ -1412,9 +1415,11 @@ allocated:
>  
>  	*errp = 0;
>  	brelse(bitmap_bh);
> -	dquot_free_block_nodirty(inode, *count-num);
> -	mark_inode_dirty(inode);
> -	*count = num;
> +	if (num < *count) {
> +		dquot_free_block_nodirty(inode, *count-num);
> +		mark_inode_dirty(inode);
> +		*count = num;
> +	}
>  	return ret_block;
>  
>  io_error:
> diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
> index b6754db..4c4cda9 100644
> --- a/fs/ext2/xattr.c
> +++ b/fs/ext2/xattr.c
> @@ -795,6 +795,7 @@ ext2_xattr_delete_inode(struct inode *inode)
>  		if (IS_SYNC(inode))
>  			sync_dirty_buffer(bh);
>  		dquot_free_block_nodirty(inode, 1);
> +		mark_inode_dirty(inode);
>  	}
>  	EXT2_I(inode)->i_file_acl = 0;
  This isn't necessary as the function is meant to be called only when
inode is going to be deleted and thus there's no point in marking it dirty.

								Honza
-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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