From e0b066f02640b770db0c66889744a323e15c98d7 Mon Sep 17 00:00:00 2001
From: ericm <ericm>
Date: Wed, 18 Oct 2006 23:48:40 +0000
Subject: [PATCH] branch: b_new_cmd basic support for PAG, ported from HEAD.

---
 build/autoconf/lustre-build-linux.m4 | 13 +++++++++++++
 build/autoconf/lustre-build.m4       |  1 +
 2 files changed, 14 insertions(+)

diff --git a/build/autoconf/lustre-build-linux.m4 b/build/autoconf/lustre-build-linux.m4
index 680a082..b4a9dd2 100644
--- a/build/autoconf/lustre-build-linux.m4
+++ b/build/autoconf/lustre-build-linux.m4
@@ -404,6 +404,19 @@ AM_CONDITIONAL(GSS, test x$enable_gss = xyes)
 ])
 
 #
+# LB_LINUX_CONFIG_PAG
+#
+AC_DEFUN([LB_LINUX_CONFIG_PAG],
+[AC_MSG_CHECKING([if Linux is patched with basic PAG support])
+LB_LINUX_TRY_COMPILE([#include <linux/sched.h>],[
+unsigned long pag = current->pag;
+],[AC_MSG_RESULT([yes])
+AC_DEFINE(HAVE_LINUX_PAG, 1, [linux has basic PAG support for Lustre])],[
+AC_MSG_RESULT([no])
+])
+])
+
+#
 # LC_LINUX_CONFIG_GSS
 #
 # Build gss and related tools of Lustre. Currently both kernel and user space
diff --git a/build/autoconf/lustre-build.m4 b/build/autoconf/lustre-build.m4
index 56de6fb..970d412 100644
--- a/build/autoconf/lustre-build.m4
+++ b/build/autoconf/lustre-build.m4
@@ -498,6 +498,7 @@ LC_CONFIG_SPLIT
 LC_CONFIG_LDISKFS
 
 LB_CONFIG_MODULES
+LB_LINUX_CONFIG_PAG
 LC_LINUX_CONFIG_GSS
 
 LC_CONFIG_LIBLUSTRE
-- 
1.8.3.1