Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / mm / slub.c

diff --git a/kernel/mm/slub.c b/kernel/mm/slub.c
index d304d88..feb4a44 100644 (file)
--- a/kernel/mm/slub.c
+++ b/kernel/mm/slub.c
@@ -2881,6 +2881,7 @@ struct detached_freelist {
        void *tail;
        void *freelist;
        int cnt;
+       struct kmem_cache *s;
 };
 
 /*
@@ -2895,8 +2896,9 @@ struct detached_freelist {
  * synchronization primitive.  Look ahead in the array is limited due
  * to performance reasons.
  */
-static int build_detached_freelist(struct kmem_cache *s, size_t size,
-                                  void **p, struct detached_freelist *df)
+static inline
+int build_detached_freelist(struct kmem_cache *s, size_t size,
+                           void **p, struct detached_freelist *df)
 {
        size_t first_skipped_index = 0;
        int lookahead = 3;
@@ -2912,8 +2914,11 @@ static int build_detached_freelist(struct kmem_cache *s, size_t size,
        if (!object)
                return 0;
 
+       /* Support for memcg, compiler can optimize this out */
+       df->s = cache_from_obj(s, object);
+
        /* Start new detached freelist */
-       set_freepointer(s, object, NULL);
+       set_freepointer(df->s, object, NULL);
        df->page = virt_to_head_page(object);
        df->tail = object;
        df->freelist = object;
@@ -2928,7 +2933,7 @@ static int build_detached_freelist(struct kmem_cache *s, size_t size,
                /* df->page is always set at this point */
                if (df->page == virt_to_head_page(object)) {
                        /* Opportunity build freelist */
-                       set_freepointer(s, object, df->freelist);
+                       set_freepointer(df->s, object, df->freelist);
                        df->freelist = object;
                        df->cnt++;
                        p[size] = NULL; /* mark object processed */
@@ -2947,25 +2952,20 @@ static int build_detached_freelist(struct kmem_cache *s, size_t size,
        return first_skipped_index;
 }
 
-
 /* Note that interrupts must be enabled when calling this function. */
-void kmem_cache_free_bulk(struct kmem_cache *orig_s, size_t size, void **p)
+void kmem_cache_free_bulk(struct kmem_cache *s, size_t size, void **p)
 {
        if (WARN_ON(!size))
                return;
 
        do {
                struct detached_freelist df;
-               struct kmem_cache *s;
-
-               /* Support for memcg */
-               s = cache_from_obj(orig_s, p[size - 1]);
 
                size = build_detached_freelist(s, size, p, &df);
                if (unlikely(!df.page))
                        continue;
 
-               slab_free(s, df.page, df.freelist, df.tail, df.cnt, _RET_IP_);
+               slab_free(df.s, df.page, df.freelist, df.tail, df.cnt,_RET_IP_);
        } while (likely(size));
 }
 EXPORT_SYMBOL(kmem_cache_free_bulk);