tree 5e95f0958a90f38f6c7f50bdd78e6baa59a9dd20
parent 550d7a2ed5db35756222ec17cff3376ff38d78e2
author Qu Wenruo <quwenruo@cn.fujitsu.com> 1428894136 +0800
committer Chris Mason <clm@fb.com> 1433953554 -0700

btrfs: qgroup: Switch rescan to new mechanism.

Switch rescan to use the new new extent oriented mechanism.

As rescan is also based on extent, new mechanism is just a perfect match
for rescan.

With re-designed internal functions, rescan is quite easy, just call
btrfs_find_all_roots() and then btrfs_qgroup_account_one_extent().

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>