diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 9dcd16dec754a920f997ddcdf7ca55295580a09f..70b6f943fd704a9ccc859c2fc314274796bd7c0e 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -5171,8 +5171,7 @@ static long btrfs_ioctl_qgroup_assign(struct file *file, void __user *arg)
 	}
 
 	if (sa->assign) {
-		ret = btrfs_add_qgroup_relation(trans, fs_info,
-						sa->src, sa->dst);
+		ret = btrfs_add_qgroup_relation(trans, sa->src, sa->dst);
 	} else {
 		ret = btrfs_del_qgroup_relation(trans, fs_info,
 						sa->src, sa->dst);
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index a7890183f20f4f4420381e70ceda09a34e0514b4..8b71aec85d843b5979154b7e14c3e454073a4caf 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -1236,9 +1236,10 @@ static int quick_update_accounting(struct btrfs_fs_info *fs_info,
 	return ret;
 }
 
-int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans,
-			      struct btrfs_fs_info *fs_info, u64 src, u64 dst)
+int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, u64 src,
+			      u64 dst)
 {
+	struct btrfs_fs_info *fs_info = trans->fs_info;
 	struct btrfs_root *quota_root;
 	struct btrfs_qgroup *parent;
 	struct btrfs_qgroup *member;
diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h
index bec7c9b17a8e6928fbf8650d00c4e4389bd83888..cb4d0e58f486febd041255c3f350890e7f989e10 100644
--- a/fs/btrfs/qgroup.h
+++ b/fs/btrfs/qgroup.h
@@ -147,8 +147,8 @@ int btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info);
 void btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info);
 int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info,
 				     bool interruptible);
-int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans,
-			      struct btrfs_fs_info *fs_info, u64 src, u64 dst);
+int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, u64 src,
+			      u64 dst);
 int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans,
 			      struct btrfs_fs_info *fs_info, u64 src, u64 dst);
 int btrfs_create_qgroup(struct btrfs_trans_handle *trans,