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mm/slub.c: use register_hotmemory_notifier()

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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>
This commit is contained in:
Andrew Morton 2013-04-29 15:08:06 -07:00 committed by Linus Torvalds
parent 8f68fa2d19
commit 3ac38faa1f
1 changed files with 6 additions and 3 deletions
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9
mm/slub.c
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@ -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 @@ int kmem_cache_shrink(struct kmem_cache *s)
}
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 @@ static int slab_memory_callback(struct notifier_block *self,
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 @@ void __init kmem_cache_init(void)
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;