mm/slub.c: use register_hotmemory_notifier()
Squishes a statement-with-no-effect warning, removes some ifdefs and
shrinks .text by 2 bytes.
Note that this code fails to check for blocking_notifier_chain_register()
failures.
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/slub.c b/mm/slub.c
index 4aec537..a0206df 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -18,6 +18,7 @@
#include <linux/slab.h>
#include "slab.h"
#include <linux/proc_fs.h>
+#include <linux/notifier.h>
#include <linux/seq_file.h>
#include <linux/kmemcheck.h>
#include <linux/cpu.h>
@@ -3483,7 +3484,6 @@
}
EXPORT_SYMBOL(kmem_cache_shrink);
-#if defined(CONFIG_MEMORY_HOTPLUG)
static int slab_mem_going_offline_callback(void *arg)
{
struct kmem_cache *s;
@@ -3598,7 +3598,10 @@
return ret;
}
-#endif /* CONFIG_MEMORY_HOTPLUG */
+static struct notifier_block slab_memory_callback_nb = {
+ .notifier_call = slab_memory_callback,
+ .priority = SLAB_CALLBACK_PRI,
+};
/********************************************************************
* Basic setup of slabs
@@ -3651,7 +3654,7 @@
create_boot_cache(kmem_cache_node, "kmem_cache_node",
sizeof(struct kmem_cache_node), SLAB_HWCACHE_ALIGN);
- hotplug_memory_notifier(slab_memory_callback, SLAB_CALLBACK_PRI);
+ register_hotmemory_notifier(&slab_memory_callback_nb);
/* Able to allocate the per node structures */
slab_state = PARTIAL;