tree 6a7c1132f8ad0b9b70a2e5cccf55d74ab3095b48
parent 3642320e07444cc46327b24977d752f99706dac2
author Miao Xie <miaox@cn.fujitsu.com> 1323911522 -0500
committer Chris Mason <chris.mason@oracle.com> 1323964236 -0500

Btrfs: fix inaccurate available space on raid0 profile

When we use raid0 as the data profile, df command may show us a very
inaccurate value of the available space, which may be much less than the
real one. It may make the users puzzled. Fix it by changing the calculation
of the available space, and making it be more similar to a fake chunk
allocation.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>