btrfs: drop trans parameter of insert_delayed_ref

Now that drop_delayed_ref() doesn't need a btrfs_trans_handle, drop it
from insert_delayed_ref() as well.
Reviewed-by: NQu Wenruo <wqu@suse.com>
Reviewed-by: NJosef Bacik <josef@toxicpanda.com>
Signed-off-by: NJohannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: NDavid Sterba <dsterba@suse.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>

fs/btrfs/delayed-ref.c

@@ -599,8 +599,7 @@ void btrfs_delete_ref_head(struct btrfs_delayed_ref_root *delayed_refs,
  * Return 0 for insert.
  * Return >0 for merge.
  */
-static int insert_delayed_ref(struct btrfs_trans_handle *trans,
-			      struct btrfs_delayed_ref_root *root,
+static int insert_delayed_ref(struct btrfs_delayed_ref_root *root,
 			      struct btrfs_delayed_ref_head *href,
 			      struct btrfs_delayed_ref_node *ref)
 {
@@ -976,7 +975,7 @@ int btrfs_add_delayed_tree_ref(struct btrfs_trans_handle *trans,
 	head_ref = add_delayed_ref_head(trans, head_ref, record,
 					action, &qrecord_inserted);
 
-	ret = insert_delayed_ref(trans, delayed_refs, head_ref, &ref->node);
+	ret = insert_delayed_ref(delayed_refs, head_ref, &ref->node);
 	spin_unlock(&delayed_refs->lock);
 
 	/*
@@ -1068,7 +1067,7 @@ int btrfs_add_delayed_data_ref(struct btrfs_trans_handle *trans,
 	head_ref = add_delayed_ref_head(trans, head_ref, record,
 					action, &qrecord_inserted);
 
-	ret = insert_delayed_ref(trans, delayed_refs, head_ref, &ref->node);
+	ret = insert_delayed_ref(delayed_refs, head_ref, &ref->node);
 	spin_unlock(&delayed_refs->lock);
 
 	/*