btrfs: qgroup: Record possible quota-related extent for qgroup.
Add hook in add_delayed_ref_head() to record quota-related extent record
into delayed_ref_root->dirty_extent_record rb-tree for later qgroup
accounting.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index 362ca57..4016f96 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -148,6 +148,9 @@
/* head ref rbtree */
struct rb_root href_root;
+ /* dirty extent records */
+ struct rb_root dirty_extent_root;
+
/* this spin lock protects the rbtree and the entries inside */
spinlock_t lock;