NFS: Allow redirtying of a completed unstable write.

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

diff --git a/mm/slub.c b/mm/slub.c
index c9c12ac..1a427c0 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -5,7 +5,7 @@
  * The allocator synchronizes using per slab locks and only
  * uses a centralized lock to manage a pool of partial slabs.
  *
- * (C) 2007 SGI, Christoph Lameter <clameter@sgi.com>
+ * (C) 2007 SGI, Christoph Lameter
  */
 
 #include <linux/mm.h>
@@ -217,7 +217,7 @@ struct track {
 
 enum track_item { TRACK_ALLOC, TRACK_FREE };
 
-#if defined(CONFIG_SYSFS) && defined(CONFIG_SLUB_DEBUG)
+#ifdef CONFIG_SLUB_DEBUG
 static int sysfs_slab_add(struct kmem_cache *);
 static int sysfs_slab_alias(struct kmem_cache *, const char *);
 static void sysfs_slab_remove(struct kmem_cache *);
@@ -2726,9 +2726,10 @@ size_t ksize(const void *object)
 
        page = virt_to_head_page(object);
 
-       if (unlikely(!PageSlab(page)))
+       if (unlikely(!PageSlab(page))) {
+               WARN_ON(!PageCompound(page));
                return PAGE_SIZE << compound_order(page);
-
+       }
        s = page->slab;
 
 #ifdef CONFIG_SLUB_DEBUG
@@ -2994,8 +2995,6 @@ void __init kmem_cache_init(void)
                create_kmalloc_cache(&kmalloc_caches[1],
                                "kmalloc-96", 96, GFP_KERNEL);
                caches++;
-       }
-       if (KMALLOC_MIN_SIZE <= 128) {
                create_kmalloc_cache(&kmalloc_caches[2],
                                "kmalloc-192", 192, GFP_KERNEL);
                caches++;
@@ -3025,6 +3024,16 @@ void __init kmem_cache_init(void)
        for (i = 8; i < KMALLOC_MIN_SIZE; i += 8)
                size_index[(i - 1) / 8] = KMALLOC_SHIFT_LOW;
 
+       if (KMALLOC_MIN_SIZE == 128) {
+               /*
+                * The 192 byte sized cache is not used if the alignment
+                * is 128 byte. Redirect kmalloc to use the 256 byte cache
+                * instead.
+                */
+               for (i = 128 + 8; i <= 192; i += 8)
+                       size_index[(i - 1) / 8] = 8;
+       }
+
        slab_state = UP;
 
        /* Provide the correct kmalloc names now that the caches are up */
@@ -3247,7 +3256,7 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
        return slab_alloc(s, gfpflags, node, caller);
 }
 
-#if (defined(CONFIG_SYSFS) && defined(CONFIG_SLUB_DEBUG)) || defined(CONFIG_SLABINFO)
+#ifdef CONFIG_SLUB_DEBUG
 static unsigned long count_partial(struct kmem_cache_node *n,
                                        int (*get_count)(struct page *))
 {
@@ -3276,9 +3285,7 @@ static int count_free(struct page *page)
 {
        return page->objects - page->inuse;
 }
-#endif
 
-#if defined(CONFIG_SYSFS) && defined(CONFIG_SLUB_DEBUG)
 static int validate_slab(struct kmem_cache *s, struct page *page,
                                                unsigned long *map)
 {
@@ -3764,7 +3771,7 @@ static int any_slab_objects(struct kmem_cache *s)
                if (!n)
                        continue;
 
-               if (atomic_read(&n->total_objects))
+               if (atomic_long_read(&n->total_objects))
                        return 1;
        }
        return 0;