mm: slub: work around unneeded lockdep warning

[~andy/linux] / mm / slub.c

diff --git a/mm/slub.c b/mm/slub.c
index a99e9e67c60e9b5f02e3308510f5b3f6f6fc3dc5..432bddf484bbf943da517f364f759ea5f448ef29 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2890,7 +2890,13 @@ static void early_kmem_cache_node_alloc(int node)
        init_kmem_cache_node(n);
        inc_slabs_node(kmem_cache_node, node, page->objects);
 
+       /*
+        * the lock is for lockdep's sake, not for any actual
+        * race protection
+        */
+       spin_lock(&n->list_lock);
        add_partial(n, page, DEACTIVATE_TO_HEAD);
+       spin_unlock(&n->list_lock);
 }
 
 static void free_kmem_cache_nodes(struct kmem_cache *s)