r8169: avoid needless NAPI poll scheduling

[linux-2.6-omap-h63xx.git] / mm / slub.c

diff --git a/mm/slub.c b/mm/slub.c
index f976d2866e734f2cc84a880555fcbfa8fe377e34..9b2d6178d06ce7259941c6aafa7b20cf81228e40 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1853,7 +1853,9 @@ static void init_kmem_cache_node(struct kmem_cache_node *n)
        atomic_long_set(&n->nr_slabs, 0);
        spin_lock_init(&n->list_lock);
        INIT_LIST_HEAD(&n->partial);
+#ifdef CONFIG_SLUB_DEBUG
        INIT_LIST_HEAD(&n->full);
+#endif
 }
 
 #ifdef CONFIG_NUMA
@@ -1881,8 +1883,10 @@ static struct kmem_cache_node * __init early_kmem_cache_node_alloc(gfp_t gfpflag
        page->freelist = get_freepointer(kmalloc_caches, n);
        page->inuse++;
        kmalloc_caches->node[node] = n;
+#ifdef CONFIG_SLUB_DEBUG
        init_object(kmalloc_caches, n, 1);
        init_tracking(kmalloc_caches, n);
+#endif
        init_kmem_cache_node(n);
        atomic_long_inc(&n->nr_slabs);
        add_partial(n, page);
@@ -2192,12 +2196,13 @@ void kmem_cache_destroy(struct kmem_cache *s)
        s->refcount--;
        if (!s->refcount) {
                list_del(&s->list);
+               up_write(&slub_lock);
                if (kmem_cache_close(s))
                        WARN_ON(1);
                sysfs_slab_remove(s);
                kfree(s);
-       }
-       up_write(&slub_lock);
+       } else
+               up_write(&slub_lock);
 }
 EXPORT_SYMBOL(kmem_cache_destroy);
 
@@ -2389,7 +2394,7 @@ size_t ksize(const void *object)
        struct page *page;
        struct kmem_cache *s;
 
-       if (object == ZERO_SIZE_PTR)
+       if (ZERO_OR_NULL_PTR(object))
                return 0;
 
        page = get_object_page(object);
@@ -2663,12 +2668,10 @@ static struct kmem_cache *find_mergeable(size_t size,
 
 struct kmem_cache *kmem_cache_create(const char *name, size_t size,
                size_t align, unsigned long flags,
-               void (*ctor)(void *, struct kmem_cache *, unsigned long),
-               void (*dtor)(void *, struct kmem_cache *, unsigned long))
+               void (*ctor)(void *, struct kmem_cache *, unsigned long))
 {
        struct kmem_cache *s;
 
-       BUG_ON(dtor);
        down_write(&slub_lock);
        s = find_mergeable(size, align, flags, ctor);
        if (s) {
@@ -2679,25 +2682,26 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size,
                 */
                s->objsize = max(s->objsize, (int)size);
                s->inuse = max_t(int, s->inuse, ALIGN(size, sizeof(void *)));
+               up_write(&slub_lock);
                if (sysfs_slab_alias(s, name))
                        goto err;
-       } else {
-               s = kmalloc(kmem_size, GFP_KERNEL);
-               if (s && kmem_cache_open(s, GFP_KERNEL, name,
+               return s;
+       }
+       s = kmalloc(kmem_size, GFP_KERNEL);
+       if (s) {
+               if (kmem_cache_open(s, GFP_KERNEL, name,
                                size, align, flags, ctor)) {
-                       if (sysfs_slab_add(s)) {
-                               kfree(s);
-                               goto err;
-                       }
                        list_add(&s->list, &slab_caches);
-               } else
-                       kfree(s);
+                       up_write(&slub_lock);
+                       if (sysfs_slab_add(s))
+                               goto err;
+                       return s;
+               }
+               kfree(s);
        }
        up_write(&slub_lock);
-       return s;
 
 err:
-       up_write(&slub_lock);
        if (flags & SLAB_PANIC)
                panic("Cannot create slabcache %s\n", name);
        else