fs/9p: Use protocol-defined value for lock/getlock 'type' field.

commit 51b8b4fb32271d39fbdd760397406177b2b0fd36 upstream.

Signed-off-by: Jim Garlick <garlick@llnl.gov>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Harsh Prateek Bora <harsh@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h
index a8d613f..32f67c3 100644
--- a/include/net/9p/9p.h
+++ b/include/net/9p/9p.h
@@ -344,6 +344,11 @@
 /* Room for readdir header */
 #define P9_READDIRHDRSZ	24
 
+/* 9p2000.L lock type */
+#define P9_LOCK_TYPE_RDLCK 0
+#define P9_LOCK_TYPE_WRLCK 1
+#define P9_LOCK_TYPE_UNLCK 2
+
 /**
  * struct p9_str - length prefixed string type
  * @len: length of the string