diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h
index 7a0b2bf..3858694 100644
--- a/fs/nfs/delegation.h
+++ b/fs/nfs/delegation.h
@@ -41,6 +41,7 @@
 int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid);
 int nfs4_open_delegation_recall(struct dentry *dentry, struct nfs4_state *state);
 int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl);
+int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode);
 
 static inline int nfs_have_delegation(struct inode *inode, int flags)
 {