Switch may_open() and break_lease() to passing O_...

... instead of mixing FMODE_ and O_

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/open.c

@@ -271,7 +271,7 @@ static long do_sys_truncate(const char __user *pathname, loff_t length)
 	 * Make sure that there are no leases.  get_write_access() protects
 	 * against the truncate racing with a lease-granting setlease().
 	 */
-	error = break_lease(inode, FMODE_WRITE);
+	error = break_lease(inode, O_WRONLY);
 	if (error)
 		goto put_write_and_out;