slab: shrink sizeof(struct kmem_cache)

[pandora-kernel.git] / mm / slab.c

diff --git a/mm/slab.c b/mm/slab.c
index ef8ceb7..c3cb359 100644 (file)
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -574,7 +574,9 @@ static struct arraycache_init initarray_generic =
     { {0, BOOT_CPUCACHE_ENTRIES, 1, 0} };
 
 /* internal cache of cache description objs */
+static struct kmem_list3 *cache_cache_nodelists[MAX_NUMNODES];
 static struct kmem_cache cache_cache = {
+       .nodelists = cache_cache_nodelists,
        .batchcount = 1,
        .limit = BOOT_CPUCACHE_ENTRIES,
        .shared = 1,
@@ -1492,11 +1494,10 @@ void __init kmem_cache_init(void)
        cache_cache.nodelists[node] = &initkmem_list3[CACHE_CACHE + node];
 
        /*
-        * struct kmem_cache size depends on nr_node_ids, which
-        * can be less than MAX_NUMNODES.
+        * struct kmem_cache size depends on nr_node_ids & nr_cpu_ids
         */
-       cache_cache.buffer_size = offsetof(struct kmem_cache, nodelists) +
-                                nr_node_ids * sizeof(struct kmem_list3 *);
+       cache_cache.buffer_size = offsetof(struct kmem_cache, array[nr_cpu_ids]) +
+                                 nr_node_ids * sizeof(struct kmem_list3 *);
 #if DEBUG
        cache_cache.obj_size = cache_cache.buffer_size;
 #endif
@@ -2308,6 +2309,7 @@ kmem_cache_create (const char *name, size_t size, size_t align,
        if (!cachep)
                goto oops;
 
+       cachep->nodelists = (struct kmem_list3 **)&cachep->array[nr_cpu_ids];
 #if DEBUG
        cachep->obj_size = size;