Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux

Pull SLAB changes from Pekka Enberg:
 "There's the new kmalloc_array() API, minor fixes and performance
  improvements, but quite honestly, nothing terribly exciting."

* 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux:
  mm: SLAB Out-of-memory diagnostics
  slab: introduce kmalloc_array()
  slub: per cpu partial statistics change
  slub: include include for prefetch
  slub: Do not hold slub_lock when calling sysfs_slab_add()
  slub: prefetch next freelist pointer in slab_alloc()
  slab, cleanup: remove unneeded return

2 files changed, 18 insertions, 5 deletions

diff --git a/include/linux/slab.h b/include/linux/slab.h
index 573c809c33d9..a595dce6b0c7 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -190,7 +190,7 @@ size_t ksize(const void *);
 #endif
 
 /**
- * kcalloc - allocate memory for an array. The memory is set to zero.
+ * kmalloc_array - allocate memory for an array.
  * @n: number of elements.
  * @size: element size.
  * @flags: the type of memory to allocate.
@@ -240,11 +240,22 @@ size_t ksize(const void *);
  * for general use, and so are not documented here. For a full list of
  * potential flags, always refer to linux/gfp.h.
  */
-static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
+static inline void *kmalloc_array(size_t n, size_t size, gfp_t flags)
 {
         if (size != 0 && n > ULONG_MAX / size)
                 return NULL;
-        return __kmalloc(n * size, flags | __GFP_ZERO);
+        return __kmalloc(n * size, flags);
+}
+
+/**
+ * kcalloc - allocate memory for an array. The memory is set to zero.
+ * @n: number of elements.
+ * @size: element size.
+ * @flags: the type of memory to allocate (see kmalloc).
+ */
+static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
+{
+        return kmalloc_array(n, size, flags | __GFP_ZERO);
 }
 
 #if !defined(CONFIG_NUMA) && !defined(CONFIG_SLOB)
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index ca122b36aec1..c2f8c8bc56ed 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -22,7 +22,7 @@ enum stat_item {
         FREE_FROZEN,            /* Freeing to frozen slab */
         FREE_ADD_PARTIAL,       /* Freeing moves slab to partial list */
         FREE_REMOVE_PARTIAL,    /* Freeing removes last object */
-        ALLOC_FROM_PARTIAL,     /* Cpu slab acquired from partial list */
+        ALLOC_FROM_PARTIAL,     /* Cpu slab acquired from node partial list */
         ALLOC_SLAB,             /* Cpu slab acquired from page allocator */
         ALLOC_REFILL,           /* Refill cpu slab from slab freelist */
         ALLOC_NODE_MISMATCH,    /* Switching cpu slab */
@@ -38,7 +38,9 @@ enum stat_item {
         CMPXCHG_DOUBLE_CPU_FAIL,/* Failure of this_cpu_cmpxchg_double */
         CMPXCHG_DOUBLE_FAIL,    /* Number of times that cmpxchg double did not match */
         CPU_PARTIAL_ALLOC,      /* Used cpu partial on alloc */
-        CPU_PARTIAL_FREE,       /* USed cpu partial on free */
+        CPU_PARTIAL_FREE,       /* Refill cpu partial on free */
+        CPU_PARTIAL_NODE,       /* Refill cpu partial from node partial */
+        CPU_PARTIAL_DRAIN,      /* Drain cpu partial to node partial */
         NR_SLUB_STAT_ITEMS };
 
 struct kmem_cache_cpu {