diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index 51e6cd1..f442e46 100644
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -97,6 +97,7 @@
 extern int SMB2_get_srv_num(const unsigned int xid, struct cifs_tcon *tcon,
 			    u64 persistent_fid, u64 volatile_fid,
 			    __le64 *uniqueid);
+extern int smb2_async_readv(struct cifs_readdata *rdata);
 extern int SMB2_echo(struct TCP_Server_Info *server);
 
 #endif			/* _SMB2PROTO_H */