linux-ext4 - Re: [PATCH 10/49] libext2fs: fix iblocks correctly when expanding an inline

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Date:	Wed, 12 Mar 2014 10:38:57 -0600
From:	Andreas Dilger <adilger@...ger.ca>
To:	"Darrick J. Wong" <darrick.wong@...cle.com>
Cc:	"tytso@....edu" <tytso@....edu>,
	"darrick.wong@...cle.com" <darrick.wong@...cle.com>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH 10/49] libext2fs: fix iblocks correctly when expanding an inline_data file

I thought it wasn't possible to have inline data and an external xattr block?  It doesn't make sense to do it that way compared to the normal inline xattr and external data block. 

Cheers, Andreas

> On Mar 11, 2014, at 0:55, "Darrick J. Wong" <darrick.wong@...cle.com> wrote:
> 
> i_blocks covers the number of blocks allocated to an inode for data,
> extents, and ACL blocks.  Since it's possible for a file to have a
> separate ACL block and inline data, we must be careful when expanding
> an inline data file to adjust, not set, the value of i_blocks.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
> ---
> lib/ext2fs/inline_data.c |    5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
> 
> 
> diff --git a/lib/ext2fs/inline_data.c b/lib/ext2fs/inline_data.c
> index 72e8fa3..a9ec923 100644
> --- a/lib/ext2fs/inline_data.c
> +++ b/lib/ext2fs/inline_data.c
> @@ -372,7 +372,9 @@ ext2fs_inline_data_dir_expand(ext2_filsys fs, ext2_ino_t ino,
>    if (EXT2_HAS_INCOMPAT_FEATURE(fs->super, EXT3_FEATURE_INCOMPAT_EXTENTS))
>        inode->i_flags |= EXT4_EXTENTS_FL;
>    inode->i_flags &= ~EXT4_INLINE_DATA_FL;
> -    ext2fs_iblk_set(fs, inode, 1);
> +    retval = ext2fs_iblk_add_blocks(fs, inode, 1);
> +    if (retval)
> +        goto errout;
>    inode->i_size = fs->blocksize;
>    retval = ext2fs_bmap2(fs, ino, inode, 0, BMAP_SET, 0, 0, &blk);
>    if (retval)
> @@ -410,7 +412,6 @@ ext2fs_inline_data_file_expand(ext2_filsys fs, ext2_ino_t ino,
>        inode->i_flags |= EXT4_EXTENTS_FL;
>    }
>    inode->i_flags &= ~EXT4_INLINE_DATA_FL;
> -    ext2fs_iblk_set(fs, inode, 0);
>    inode->i_size = 0;
>    retval = ext2fs_write_inode(fs, ino, inode);
>    if (retval)
> 
> --
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