tree a2128e008636ad4dd4d6db2131363cc71d45ad73
parent 38c01b9605923cfdff5413e0a12e58ee8d962257
author liubo <liubo2009@cn.fujitsu.com> 1312366525 +0000
committer Chris Mason <chris.mason@oracle.com> 1313543355 -0400

Btrfs: check if there is enough space for balancing smarter

When checking if there is enough space for balancing a block group,
since we do not take raid types into consideration, we do not account
corrent amounts of space that we needed.  This makes us do some extra
work before we get ENOSPC.

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>