[XFS] Manage spinlock differences between kernel versions a bit.
SGI-PV: 904196
SGI-Modid: xfs-linux:xfs-kern:23563a
Signed-off-by: Nathan Scott <nathans@sgi.com>
diff --git a/fs/xfs/linux-2.6/spin.h b/fs/xfs/linux-2.6/spin.h
index bcf60a0..0039504 100644
--- a/fs/xfs/linux-2.6/spin.h
+++ b/fs/xfs/linux-2.6/spin.h
@@ -45,6 +45,9 @@
typedef spinlock_t lock_t;
#define SPLDECL(s) unsigned long s
+#ifndef DEFINE_SPINLOCK
+#define DEFINE_SPINLOCK(s) spinlock_t s = SPIN_LOCK_UNLOCKED
+#endif
#define spinlock_init(lock, name) spin_lock_init(lock)
#define spinlock_destroy(lock)