From 643a435dc9a09c5cf85c1b854221384e8060fd48 Mon Sep 17 00:00:00 2001
From: yangsheng <yangsheng>
Date: Mon, 25 May 2009 13:28:30 +0000
Subject: [PATCH] Branch b1_6 b=18718

i=joahnn, shadow

fixed the build for sles9.
---
 lustre/autoconf/lustre-core.m4         | 12 ++++++++++++
 lustre/include/linux/lustre_compat25.h |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/lustre/autoconf/lustre-core.m4 b/lustre/autoconf/lustre-core.m4
index 9572896..c2677a4 100644
--- a/lustre/autoconf/lustre-core.m4
+++ b/lustre/autoconf/lustre-core.m4
@@ -1480,6 +1480,15 @@ LB_LINUX_TRY_COMPILE([
 EXTRA_KCFLAGS="$tmp_flags"
 ])
 
+# 2.6.5 sles9 hasn't define sysctl_vfs_cache_pressure
+AC_DEFUN([LC_HAVE_SYSCTL_VFS_CACHE_PRESSURE],
+[LB_CHECK_SYMBOL_EXPORT([sysctl_vfs_cache_pressure],
+[fs/dcache.c],[
+        AC_DEFINE(HAVE_SYSCTL_VFS_CACHE_PRESSURE, 1, [kernel exports sysctl_vfs_cache_pressure])
+],[
+])
+])
+
 #
 # LC_PROG_LINUX
 #
@@ -1534,6 +1543,9 @@ AC_DEFUN([LC_PROG_LINUX],
           # does the kernel have VFS intent patches?
           LC_VFS_INTENT_PATCHES
 
+	  # 2.6.5 sles9
+	  LC_HAVE_SYSCTL_VFS_CACHE_PRESSURE
+
           # 2.6.12
           LC_EXPORT_SYNCHRONIZE_RCU
 
diff --git a/lustre/include/linux/lustre_compat25.h b/lustre/include/linux/lustre_compat25.h
index 09d4c71..050c8f9 100644
--- a/lustre/include/linux/lustre_compat25.h
+++ b/lustre/include/linux/lustre_compat25.h
@@ -506,5 +506,9 @@ static inline long labs(long x)
 #define INODE_PRIVATE_DATA(inode)       ((inode)->u.generic_ip)
 #endif
 
+#ifndef	HAVE_SYSCTL_VFS_CACHE_PRESSURE
+#define	sysctl_vfs_cache_pressure	100
+#endif
+
 #endif /* __KERNEL__ */
 #endif /* _COMPAT25_H */
-- 
1.8.3.1