[RFC][PATCH v2 3/7] Defining the slab_memory_callback priority as a constant

[Nadia . Derbey]

[PATCH 03/07]

This is a trivial patch that defines the priority of slab_memory_callback in
the callback chain as a constant.
This is to prepare for next patch in the series.

Signed-off-by: Nadia Derbey <Nadia.Derbey@xxxxxxxx>

---
 include/linux/memory.h |    6 ++++++
 mm/slub.c              |    2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

Index: linux-2.6.24/include/linux/memory.h
===================================================================
--- linux-2.6.24.orig/include/linux/memory.h	2008-01-29 16:54:38.000000000 +0100
+++ linux-2.6.24/include/linux/memory.h	2008-01-31 10:30:37.000000000 +0100
@@ -54,6 +54,12 @@ struct memory_notify {
 struct notifier_block;
 struct mem_section;
 
+/*
+ * Priorities for the hotplug memory callback routines (stored in decreasing
+ * order in the callback chain)
+ */
+#define SLAB_CALLBACK_PRI       1
+
 #ifndef CONFIG_MEMORY_HOTPLUG_SPARSE
 static inline int memory_dev_init(void)
 {
Index: linux-2.6.24/mm/slub.c
===================================================================
--- linux-2.6.24.orig/mm/slub.c	2008-01-29 16:54:49.000000000 +0100
+++ linux-2.6.24/mm/slub.c	2008-01-31 10:31:34.000000000 +0100
@@ -2816,7 +2816,7 @@ void __init kmem_cache_init(void)
 	kmalloc_caches[0].refcount = -1;
 	caches++;
 
-	hotplug_memory_notifier(slab_memory_callback, 1);
+	hotplug_memory_notifier(slab_memory_callback, SLAB_CALLBACK_PRI);
 #endif
 
 	/* Able to allocate the per node structures */

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