Maemo patchset 20101501+0m5

[h-e-n] / net / core / sock.c

diff --git a/net/core/sock.c b/net/core/sock.c
index edf7220..0a4689e 100644 (file)
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -886,8 +886,23 @@ static struct sock *sk_prot_alloc(struct proto *prot, gfp_t priority,
        struct kmem_cache *slab;
 
        slab = prot->slab;
-       if (slab != NULL)
-               sk = kmem_cache_alloc(slab, priority);
+       if (slab != NULL) {
+               sk = kmem_cache_alloc(slab, priority & ~__GFP_ZERO);
+               if (!sk)
+                       return sk;
+               if (priority & __GFP_ZERO) {
+                       /*
+                        * caches using SLAB_DESTROY_BY_RCU should let
+                        * sk_node.next un-modified. Special care is taken
+                        * when initializing object to zero.
+                        */
+                       if (offsetof(struct sock, sk_node.next) != 0)
+                               memset(sk, 0, offsetof(struct sock, sk_node.next));
+                       memset(&sk->sk_node.pprev, 0,
+                              prot->obj_size - offsetof(struct sock,
+                                                        sk_node.pprev));
+               }
+       }
        else
                sk = kmalloc(prot->obj_size, priority);