[PATCH 3/4] xfstests: Add support for btrfs in 015

[Christoph Hellwig]

On Thu, Jul 28, 2011 at 10:28:00AM +0200, Stefan Behrens wrote:
> Added btrfs to the list of supported filesystems for test 015, and
> increased free space reporting tolerance to 10% for btrfs.
> Replaced the call to _scratch_mkfs_xfs with the XFS specific size
> parameter by the generic one for sized filesystem creation which is
> _scratch_mkfs_sized.

ACK for the _scratch_mkfs_sized changed, but I'm really curious why
we would allow so much more tolerance for btrfs.

And again, why can't these be marked generic?