btrfs: Drop fs_info parameter from btrfs_merge_delayed_refs

It's provided by the transaction handle.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/delayed-ref.c

@@ -286,10 +286,10 @@ static bool merge_ref(struct btrfs_trans_handle *trans,
 }
 
 void btrfs_merge_delayed_refs(struct btrfs_trans_handle *trans,
-			      struct btrfs_fs_info *fs_info,
 			      struct btrfs_delayed_ref_root *delayed_refs,
 			      struct btrfs_delayed_ref_head *head)
 {
+	struct btrfs_fs_info *fs_info = trans->fs_info;
 	struct btrfs_delayed_ref_node *ref;
 	struct rb_node *node;
 	u64 seq = 0;

fs/btrfs/delayed-ref.h

@@ -251,7 +251,6 @@ int btrfs_add_delayed_extent_op(struct btrfs_fs_info *fs_info,
 				u64 bytenr, u64 num_bytes,
 				struct btrfs_delayed_extent_op *extent_op);
 void btrfs_merge_delayed_refs(struct btrfs_trans_handle *trans,
-			      struct btrfs_fs_info *fs_info,
 			      struct btrfs_delayed_ref_root *delayed_refs,
 			      struct btrfs_delayed_ref_head *head);
 

fs/btrfs/extent-tree.c

@@ -2703,8 +2703,7 @@ static noinline int __btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
 		 * insert_inline_extent_backref()).
 		 */
 		spin_lock(&locked_ref->lock);
-		btrfs_merge_delayed_refs(trans, fs_info, delayed_refs,
-					 locked_ref);
+		btrfs_merge_delayed_refs(trans, delayed_refs, locked_ref);
 
 		/*
 		 * locked_ref is the head node, so we have to go one