Merge git://git.infradead.org/users/dwmw2/random-2.6

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

diff --git a/mm/slub.c b/mm/slub.c
index b7e2cd5..fb486d5 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1329,7 +1329,7 @@ static struct page *get_any_partial(struct kmem_cache *s, gfp_t flags)
                n = get_node(s, zone_to_nid(zone));
 
                if (n && cpuset_zone_allowed_hardwall(zone, flags) &&
-                               n->nr_partial > MIN_PARTIAL) {
+                               n->nr_partial > n->min_partial) {
                        page = get_partial_node(n);
                        if (page)
                                return page;
@@ -1381,7 +1381,7 @@ static void unfreeze_slab(struct kmem_cache *s, struct page *page, int tail)
                slab_unlock(page);
        } else {
                stat(c, DEACTIVATE_EMPTY);
-               if (n->nr_partial < MIN_PARTIAL) {
+               if (n->nr_partial < n->min_partial) {
                        /*
                         * Adding an empty slab to the partial slabs in order
                         * to avoid page allocator overhead. This slab needs
@@ -1913,9 +1913,21 @@ static void init_kmem_cache_cpu(struct kmem_cache *s,
 #endif
 }
 
-static void init_kmem_cache_node(struct kmem_cache_node *n)
+static void
+init_kmem_cache_node(struct kmem_cache_node *n, struct kmem_cache *s)
 {
        n->nr_partial = 0;
+
+       /*
+        * The larger the object size is, the more pages we want on the partial
+        * list to avoid pounding the page allocator excessively.
+        */
+       n->min_partial = ilog2(s->size);
+       if (n->min_partial < MIN_PARTIAL)
+               n->min_partial = MIN_PARTIAL;
+       else if (n->min_partial > MAX_PARTIAL)
+               n->min_partial = MAX_PARTIAL;
+
        spin_lock_init(&n->list_lock);
        INIT_LIST_HEAD(&n->partial);
 #ifdef CONFIG_SLUB_DEBUG
@@ -2087,7 +2099,7 @@ static struct kmem_cache_node *early_kmem_cache_node_alloc(gfp_t gfpflags,
        init_object(kmalloc_caches, n, 1);
        init_tracking(kmalloc_caches, n);
 #endif
-       init_kmem_cache_node(n);
+       init_kmem_cache_node(n, kmalloc_caches);
        inc_slabs_node(kmalloc_caches, node, page->objects);
 
        /*
@@ -2144,7 +2156,7 @@ static int init_kmem_cache_nodes(struct kmem_cache *s, gfp_t gfpflags)
 
                }
                s->node[node] = n;
-               init_kmem_cache_node(n);
+               init_kmem_cache_node(n, s);
        }
        return 1;
 }
@@ -2155,7 +2167,7 @@ static void free_kmem_cache_nodes(struct kmem_cache *s)
 
 static int init_kmem_cache_nodes(struct kmem_cache *s, gfp_t gfpflags)
 {
-       init_kmem_cache_node(&s->local_node);
+       init_kmem_cache_node(&s->local_node, s);
        return 1;
 }
 #endif
@@ -2300,7 +2312,7 @@ static int kmem_cache_open(struct kmem_cache *s, gfp_t gfpflags,
 
        s->refcount = 1;
 #ifdef CONFIG_NUMA
-       s->remote_node_defrag_ratio = 100;
+       s->remote_node_defrag_ratio = 1000;
 #endif
        if (!init_kmem_cache_nodes(s, gfpflags & ~SLUB_DMA))
                goto error;
@@ -2715,7 +2727,6 @@ size_t ksize(const void *object)
         */
        return s->size;
 }
-EXPORT_SYMBOL(ksize);
 
 void kfree(const void *x)
 {
@@ -2890,7 +2901,7 @@ static int slab_mem_going_online_callback(void *arg)
                        ret = -ENOMEM;
                        goto out;
                }
-               init_kmem_cache_node(n);
+               init_kmem_cache_node(n, s);
                s->node[nid] = n;
        }
 out:
@@ -4047,7 +4058,7 @@ static ssize_t remote_node_defrag_ratio_store(struct kmem_cache *s,
        if (err)
                return err;
 
-       if (ratio < 100)
+       if (ratio <= 100)
                s->remote_node_defrag_ratio = ratio * 10;
 
        return length;