DEFINE_STATIC_SRCU() defines srcu struct and do init at build time.
also remove unneeded mmu_notifier_init().

Signed-off-by: Lai Jiangshan <la...@cn.fujitsu.com>
---
 mm/mmu_notifier.c |    8 +-------
 1 files changed, 1 insertions(+), 7 deletions(-)

diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c
index be04122..aa7c785 100644
--- a/mm/mmu_notifier.c
+++ b/mm/mmu_notifier.c
@@ -20,7 +20,7 @@
 #include <linux/slab.h>
 
 /* global SRCU for all MMs */
-static struct srcu_struct srcu;
+DEFINE_STATIC_SRCU(srcu);
 
 /*
  * This function can't run concurrently against mmu_notifier_register
@@ -326,9 +326,3 @@ void mmu_notifier_unregister(struct mmu_notifier *mn, 
struct mm_struct *mm)
 }
 EXPORT_SYMBOL_GPL(mmu_notifier_unregister);
 
-static int __init mmu_notifier_init(void)
-{
-       return init_srcu_struct(&srcu);
-}
-
-module_init(mmu_notifier_init);
-- 
1.7.4.4

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