1 files changed, 9 insertions, 1 deletions

diff --git a/mm/slub.c b/mm/slub.c
index 4907563ef7ff..5b915e86a9b0 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -269,6 +269,11 @@ static inline void *get_freepointer(struct kmem_cache *s, void *object)
         return *(void **)(object + s->offset);
 }
 
+static void prefetch_freepointer(const struct kmem_cache *s, void *object)
+{
+        prefetch(object + s->offset);
+}
+
 static inline void *get_freepointer_safe(struct kmem_cache *s, void *object)
 {
         void *p;
@@ -2309,6 +2314,8 @@ redo:
                 object = __slab_alloc(s, gfpflags, node, addr, c);
 
         else {
+                void *next_object = get_freepointer_safe(s, object);
+
                 /*
                  * The cmpxchg will only match if there was no additional
                  * operation and if we are on the right processor.
@@ -2324,11 +2331,12 @@ redo:
                 if (unlikely(!this_cpu_cmpxchg_double(
                                 s->cpu_slab->freelist, s->cpu_slab->tid,
                                 object, tid,
-                                get_freepointer_safe(s, object), next_tid(tid)))) {
+                                next_object, next_tid(tid)))) {
 
                         note_cmpxchg_failure("slab_alloc", s, tid);
                         goto redo;
                 }
+                prefetch_freepointer(s, next_object);
                 stat(s, ALLOC_FASTPATH);
         }