CIFS: Add SMB2 support for cifs_iovec_write

Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index f442e46..ec983be 100644
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -98,6 +98,7 @@
 			    u64 persistent_fid, u64 volatile_fid,
 			    __le64 *uniqueid);
 extern int smb2_async_readv(struct cifs_readdata *rdata);
+extern int smb2_async_writev(struct cifs_writedata *wdata);
 extern int SMB2_echo(struct TCP_Server_Info *server);
 
 #endif			/* _SMB2PROTO_H */