[PATCH] xfs: don't fill statvfs with project quota for a directory if it was not enabled.

[Christoph Hellwig]

On Sun, Apr 01, 2012 at 12:55:55PM +0800, Jeff Liu wrote:
> Hello,
> 
> I can trigger a BUG() at fs/xfs/xfs_dquot.c on vanilla kernel 3.3.0 by the following steps:
> 
> 1. mount a XFS partition without 'pquota' option.
>    /dev/sda7 on /xfs type xfs (rw)
> 
> 2. setup project1 on it.
>    $ cat /etc/projects 
>    1:/xfs
>    $ cat /etc/projid
>    project1:1
>    $ sudo xfs_quota -x -c 'project -s project1' /xfs
> 
> 3. du -sh /xfs

Can you wire this up as a test case for xfstests?

> +		    ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) ==
> +		     (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) {

This check is supposed to return false.  I guess Chandras separate
project quota inode preparations somehow broke it.

Chandra, can you look into this issue?