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Subject[patch -mm] notifier chain initialization
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Hi,

This one is against the -mm tree, description below.

Cheers,
Jes

This patch goes on top of Alan Stern's
notifier-chain-update-api-changes.patch

It restructures the notifier chain initialization macros by
introducing FOO_NOTIFIER_INIT() macros which are used by the
FOO_NOTIFIER_HEAD() macros.

The benefit is that one can use the FOO_NOTIFIER_INIT() macro for
static initialization of a notifier chain.

Signed-off-by: Jes Sorensen <jes@sgi.com>

---
include/linux/notifier.h | 19 +++++++++++++------
1 file changed, 13 insertions(+), 6 deletions(-)

Index: linux-2.6/include/linux/notifier.h
===================================================================
--- linux-2.6.orig/include/linux/notifier.h
+++ linux-2.6/include/linux/notifier.h
@@ -64,17 +64,24 @@
(name)->head = NULL; \
} while (0)

-#define ATOMIC_NOTIFIER_HEAD(name) \
- struct atomic_notifier_head name = { \
+#define ATOMIC_NOTIFIER_INIT(name) { \
.mutex = __MUTEX_INITIALIZER((name).mutex), \
.head = NULL }
-#define BLOCKING_NOTIFIER_HEAD(name) \
- struct blocking_notifier_head name = { \
+#define BLOCKING_NOTIFIER_INIT(name) { \
.rwsem = __RWSEM_INITIALIZER((name).rwsem), \
.head = NULL }
+#define RAW_NOTIFIER_INIT(name) { \
+ .head = NULL }
+
+#define ATOMIC_NOTIFIER_HEAD(name) \
+ struct atomic_notifier_head name = \
+ ATOMIC_NOTIFIER_INIT(name)
+#define BLOCKING_NOTIFIER_HEAD(name) \
+ struct blocking_notifier_head name = \
+ BLOCKING_NOTIFIER_INIT(name)
#define RAW_NOTIFIER_HEAD(name) \
- struct raw_notifier_head name = { \
- .head = NULL }
+ struct raw_notifier_head name = \
+ RAW_NOTIFIER_INIT(name)

#ifdef __KERNEL__

-
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