linux-kernel - [PATCH-v2 08/17] staging/lustre: fix build on s390

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Date:	Mon, 15 Jul 2013 21:08:06 +0800
From:	Peng Tao <bergwolf@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, Peng Tao <bergwolf@...il.com>,
	Peng Tao <tao.peng@....com>,
	Andreas Dilger <andreas.dilger@...el.com>
Subject: [PATCH-v2 08/17] staging/lustre: fix build on s390

As reported by Fengguang:
In file included from drivers/staging/lustre/lustre/obdclass/../include/lustre/lustre_idl.h:99:0,
	    from drivers/staging/lustre/lustre/obdclass/../include/lprocfs_status.h:46,
	    from drivers/staging/lustre/lustre/obdclass/../include/obd_support.h:42,
	    from drivers/staging/lustre/lustre/obdclass/../include/obd_class.h:40,
	    from drivers/staging/lustre/lustre/obdclass/lu_object.c:53:
drivers/staging/lustre/lustre/obdclass/../include/lustre/lustre_user.h:356:10: error: field 'lmd_st' has incomplete type
drivers/staging/lustre/lustre/obdclass/../include/lustre/lustre_user.h:361:10: error: field 'lmd_st' has incomplete type

Reported-by: Fengguang Wu <fengguang.wu@...el.com>
Signed-off-by: Peng Tao <tao.peng@....com>
Signed-off-by: Andreas Dilger <andreas.dilger@...el.com>
---
 .../lustre/lustre/include/linux/lustre_user.h      |   18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/linux/lustre_user.h b/drivers/staging/lustre/lustre/include/linux/lustre_user.h
index ebaf929..ea9393c 100644
--- a/drivers/staging/lustre/lustre/include/linux/lustre_user.h
+++ b/drivers/staging/lustre/lustre/include/linux/lustre_user.h
@@ -53,15 +53,19 @@
 
 #include <linux/string.h>
 
-#if defined(__x86_64__) || defined(__ia64__) || defined(__ppc64__) || \
-    defined(__craynv) || defined (__mips64__) || defined(__powerpc64__)
-typedef struct stat     lstat_t;
-#define lstat_f	 lstat
-#define HAVE_LOV_USER_MDS_DATA
-#else
+/*
+ * We need to always use 64bit version because the structure
+ * is shared across entire cluster where 32bit and 64bit machines
+ * are co-existing.
+ */
+#if __BITS_PER_LONG != 64 || defined(__ARCH_WANT_STAT64)
 typedef struct stat64   lstat_t;
 #define lstat_f	 lstat64
-#define HAVE_LOV_USER_MDS_DATA
+#else
+typedef struct stat     lstat_t;
+#define lstat_f	 lstat
 #endif
 
+#define HAVE_LOV_USER_MDS_DATA
+
 #endif /* _LUSTRE_USER_H */
-- 
1.7.9.5

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