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authorJames Morris <jmorris@namei.org>2009-07-14 00:30:40 +1000
committerJames Morris <jmorris@namei.org>2009-07-14 00:30:40 +1000
commit7d45ecafb6792ca68da9517969d37d910601845f (patch)
treea98b1074e5577e66a97963745f975404d0aac266 /include/linux/spinlock.h
parentbe940d6279c30a2d7c4e8d1d5435f957f594d66d (diff)
parent7638d5322bd89d49e013a03fe2afaeb6d214fabd (diff)
Merge branch 'master' into next
Conflicts: include/linux/personality.h Use Linus' version. Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'include/linux/spinlock.h')
-rw-r--r--include/linux/spinlock.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index 252b245cfcf..4be57ab0347 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -132,6 +132,11 @@ do { \
#endif /*__raw_spin_is_contended*/
#endif
+/* The lock does not imply full memory barrier. */
+#ifndef ARCH_HAS_SMP_MB_AFTER_LOCK
+static inline void smp_mb__after_lock(void) { smp_mb(); }
+#endif
+
/**
* spin_unlock_wait - wait until the spinlock gets unlocked
* @lock: the spinlock in question.