slub: Prepare inuse field in new_slab()

inuse will always be set to page->objects. There is no point in
initializing the field to zero in new_slab() and then overwriting
the value in __slab_alloc().

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/mm/slub.c b/mm/slub.c
index d4b76bea5dba..83bb81de4468 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1447,7 +1447,7 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node)
         set_freepointer(s, last, NULL);
 
         page->freelist = start;
-        page->inuse = 0;
+        page->inuse = page->objects;
         page->frozen = 1;
 out:
         return page;
@@ -2139,7 +2139,6 @@ new_slab:
                  */
                 object = page->freelist;
                 page->freelist = NULL;
-                page->inuse = page->objects;
 
                 stat(s, ALLOC_SLAB);
                 c->node = page_to_nid(page);
@@ -2681,7 +2680,7 @@ static void early_kmem_cache_node_alloc(int node)
         n = page->freelist;
         BUG_ON(!n);
         page->freelist = get_freepointer(kmem_cache_node, n);
-        page->inuse++;
+        page->inuse = 1;
         page->frozen = 0;
         kmem_cache_node->node[node] = n;
 #ifdef CONFIG_SLUB_DEBUG