diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index a5ddc62..b35c55c 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -50,6 +50,10 @@
 extern int SendReceive2(const unsigned int /* xid */ , struct cifsSesInfo *,
 			struct kvec *, int /* nvec to send */, 
 			int * /* type of buf returned */ , const int long_op);
+extern int SendReceiveBlockingLock(const unsigned int /* xid */ , struct cifsTconInfo *,
+				struct smb_hdr * /* input */ ,
+				struct smb_hdr * /* out */ ,
+				int * /* bytes returned */);
 extern int checkSMBhdr(struct smb_hdr *smb, __u16 mid);
 extern int checkSMB(struct smb_hdr *smb, __u16 mid, int length);
 extern int is_valid_oplock_break(struct smb_hdr *smb, struct TCP_Server_Info *);