1 files changed, 12 insertions, 15 deletions

diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 1e14beb23f9b..0249d4175bac 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -38,8 +38,6 @@ struct kmem_cache_cpu {
         void **freelist;        /* Pointer to first free per cpu object */
         struct page *page;      /* The slab from which we are allocating */
         int node;               /* The node of the page (or -1 for debug) */
-        unsigned int offset;    /* Freepointer offset (in word units) */
-        unsigned int objsize;   /* Size of an object (from kmem_cache) */
 #ifdef CONFIG_SLUB_STATS
         unsigned stat[NR_SLUB_STAT_ITEMS];
 #endif
@@ -69,6 +67,7 @@ struct kmem_cache_order_objects {
  * Slab cache management.
  */
 struct kmem_cache {
+        struct kmem_cache_cpu *cpu_slab;
         /* Used for retriving partial slabs etc */
         unsigned long flags;
         int size;               /* The size of an object including meta data */
@@ -104,11 +103,6 @@ struct kmem_cache {
         int remote_node_defrag_ratio;
         struct kmem_cache_node *node[MAX_NUMNODES];
 #endif
-#ifdef CONFIG_SMP
-        struct kmem_cache_cpu *cpu_slab[NR_CPUS];
-#else
-        struct kmem_cache_cpu cpu_slab;
-#endif
 };
 
 /*
@@ -135,11 +129,21 @@ struct kmem_cache {
 
 #define SLUB_PAGE_SHIFT (PAGE_SHIFT + 2)
 
+#ifdef CONFIG_ZONE_DMA
+#define SLUB_DMA __GFP_DMA
+/* Reserve extra caches for potential DMA use */
+#define KMALLOC_CACHES (2 * SLUB_PAGE_SHIFT - 6)
+#else
+/* Disable DMA functionality */
+#define SLUB_DMA (__force gfp_t)0
+#define KMALLOC_CACHES SLUB_PAGE_SHIFT
+#endif
+
 /*
  * We keep the general caches in an array of slab caches that are used for
  * 2^x bytes of allocations.
  */
-extern struct kmem_cache kmalloc_caches[SLUB_PAGE_SHIFT];
+extern struct kmem_cache kmalloc_caches[KMALLOC_CACHES];
 
 /*
  * Sorry that the following has to be that ugly but some versions of GCC
@@ -207,13 +211,6 @@ static __always_inline struct kmem_cache *kmalloc_slab(size_t size)
         return &kmalloc_caches[index];
 }
 
-#ifdef CONFIG_ZONE_DMA
-#define SLUB_DMA __GFP_DMA
-#else
-/* Disable DMA functionality */
-#define SLUB_DMA (__force gfp_t)0
-#endif
-
 void *kmem_cache_alloc(struct kmem_cache *, gfp_t);
 void *__kmalloc(size_t size, gfp_t flags);