Fix section mismatch

This patch fixes following compile warning:

--------- >8 --------
WARNING: mm/built-in.o - Section mismatch: reference to .init.text: from .text between 'kmem_cache_create' (at offset 0x2167b) and 'drain_alien_cache'

WARNING: mm/built-in.o - Section mismatch: reference to .init.text: from .text between 'kmem_cache_create' (at offset 0x216c1) and 'drain_alien_cache' --------- 8< --------

set_up_list3s() can be called from setup_cpu_cache() [mm/slab.c] which is not an init function.

---
 mm/slab.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -305,7 +305,7 @@ struct kmem_list3 {
  * Need this for bootstrapping a per node allocator.
  */
 #define NUM_INIT_LISTS (2 * MAX_NUMNODES + 1)
-struct kmem_list3 __initdata initkmem_list3[NUM_INIT_LISTS];
+struct kmem_list3 initkmem_list3[NUM_INIT_LISTS];
 #define	CACHE_CACHE 0
 #define	SIZE_AC 1
 #define	SIZE_L3 (1 + MAX_NUMNODES)

@@ -1960,7 +1960,7 @@ static void slab_destroy(struct kmem_cac
  * For setting up all the kmem_list3s for cache whose buffer_size is same as
  * size of kmem_list3.
  */
-static void __init set_up_list3s(struct kmem_cache *cachep, int index)
+static void set_up_list3s(struct kmem_cache *cachep, int index)
 {
 	int node;
 

Yes. This warning is a false positive. See

static int setup_cpu_cache(struct kmem_cache *cachep)

{
	if (g_cpucache_up == FULL)
		return enable_cpucache(cachep);

	if (g_cpucache_up == NONE) {
		...
		set_up_list3s(cachep, SIZE_AC);

The g_cpucache_up==NONE state only exists before we have run free_initmem().

There is a similar false-positive down in acpi somewhere.

I think Sam is working on a scheme whereby we can add annotation to quash the warnings in cases such as this.