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Message-ID: <4FC7A5A2.1080704@redhat.com>
Date: Thu, 31 May 2012 12:08:50 -0500
From: Eric Sandeen <sandeen@...hat.com>
To: Tao Ma <tm@....ma>
CC: linux-ext4@...r.kernel.org, "Theodore Ts'o" <tytso@....edu>
Subject: Re: [PATCH] ext4: let getattr report the right blocks in delalloc+bigalloc.
On 1/31/12 9:58 AM, Tao Ma wrote:
> From: Tao Ma <boyu.mt@...bao.com>
>
> In delayed allocation, i_reserved_data_blocks now indicates
> clusters, not blocks. So report it in the right number.
>
> This can be easily exposed by the following command:
> echo foo > blah; du -hc blah; sync; du -hc blah
>
> Cc: "Theodore Ts'o" <tytso@....edu>
> Reported-by: Eric Sandeen <sandeen@...hat.com>
> Signed-off-by: Tao Ma <boyu.mt@...bao.com>
Reviewed-by: Eric Sandeen <sandeen2redhat.com>
It'd be great to get this one merged.
Thanks,
-Eric
> ---
> fs/ext4/inode.c | 3 ++-
> 1 files changed, 2 insertions(+), 1 deletions(-)
>
> diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
> index feaa82f..a5eb8c6 100644
> --- a/fs/ext4/inode.c
> +++ b/fs/ext4/inode.c
> @@ -4200,7 +4200,8 @@ int ext4_getattr(struct vfsmount *mnt, struct dentry *dentry,
> * will return the blocks that include the delayed allocation
> * blocks for this file.
> */
> - delalloc_blocks = EXT4_I(inode)->i_reserved_data_blocks;
> + delalloc_blocks = EXT4_C2B(EXT4_SB(inode->i_sb),
> + EXT4_I(inode)->i_reserved_data_blocks);
>
> stat->blocks += (delalloc_blocks << inode->i_sb->s_blocksize_bits)>>9;
> return 0;
--
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