btrfs: restructure find_free_dev_extent()
authorMiao Xie <miaox@cn.fujitsu.com>
Wed, 5 Jan 2011 10:07:26 +0000 (10:07 +0000)
committerChris Mason <chris.mason@oracle.com>
Sun, 16 Jan 2011 16:30:19 +0000 (11:30 -0500)
- make it return the start position and length of the max free space when it can
  not find a suitable free space.
- make it more readability

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

No differences found