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authorQu Wenruo <quwenruo@cn.fujitsu.com>2015-04-16 11:40:39 +0300
committerChris Mason <clm@fb.com>2015-06-10 19:25:39 +0300
commit3b7d00f99c60b31e1cff0efc6b9178eea3696e27 (patch)
tree6ad1addc84a6635f3696fbea6bfd54276075d30c /fs/btrfs/qgroup.h
parent3368d001ba5df44930d986e82b1b497d4da285ba (diff)
downloadlinux-3b7d00f99c60b31e1cff0efc6b9178eea3696e27.tar.xz
btrfs: qgroup: Add new function to record old_roots.
Add function btrfs_qgroup_prepare_account_extents() to get old_roots which are needed for qgroup. We do it in commit_transaction() and before switch_roots(), and only search commit_root, so it gives a quite accurate view for previous transaction. With old_roots from previous transaction, we can use it to do accurate account with current transaction. Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/qgroup.h')
-rw-r--r--fs/btrfs/qgroup.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h
index e58155d0390c..6fe249f078ac 100644
--- a/fs/btrfs/qgroup.h
+++ b/fs/btrfs/qgroup.h
@@ -98,6 +98,8 @@ int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans,
u64 bytenr, u64 num_bytes,
enum btrfs_qgroup_operation_type type,
int mod_seq);
+int btrfs_qgroup_prepare_account_extents(struct btrfs_trans_handle *trans,
+ struct btrfs_fs_info *fs_info);
struct btrfs_qgroup_extent_record
*btrfs_qgroup_insert_dirty_extent(struct btrfs_delayed_ref_root *delayed_refs,
struct btrfs_qgroup_extent_record *record);