NFSv4: Return delegations in case we're changing ACLs

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 6b0f7fe..65d5ab4 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -853,6 +853,11 @@
 			filemap_fdatawait(inode->i_mapping);
 		nfs_wb_all(inode);
 	}
+	/*
+	 * Return any delegations if we're going to change ACLs
+	 */
+	if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0)
+		nfs_inode_return_delegation(inode);
 	error = NFS_PROTO(inode)->setattr(dentry, &fattr, attr);
 	if (error == 0)
 		nfs_refresh_inode(inode, &fattr);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 3db1c9f..c10dcd1 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2405,6 +2405,7 @@
 
 	if (!nfs4_server_supports_acls(server))
 		return -EOPNOTSUPP;
+	nfs_inode_return_delegation(inode);
 	buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
 	ret = rpc_call_sync(NFS_SERVER(inode)->client, &msg, 0);
 	if (ret == 0)