xfs/299: work with 64k block size

This commit changes the test to calculate quota limits based on the
block size of the underlying filesystem. Also, the sizes of the test
files are now made to be a multiple of the filesystem block size.

Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Tested-by: Zorro Lang <zlang@redhat.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
2 files changed