[PATCH] net: don't call kmem_cache_create with a spinlock held

This fixes the warning reported by Marcel Holtmann (Thanks!).
  
Signed-off-by: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

net/core/sock.c

@@ -1359,8 +1359,6 @@ int proto_register(struct proto *prot, int alloc_slab)
 {
 	int rc = -ENOBUFS;
 
-	write_lock(&proto_list_lock);
-
 	if (alloc_slab) {
 		prot->slab = kmem_cache_create(prot->name, prot->obj_size, 0,
 					       SLAB_HWCACHE_ALIGN, NULL, NULL);
@@ -1368,14 +1366,15 @@ int proto_register(struct proto *prot, int alloc_slab)
 		if (prot->slab == NULL) {
 			printk(KERN_CRIT "%s: Can't create sock SLAB cache!\n",
 			       prot->name);
-			goto out_unlock;
+			goto out;
 		}
 	}
 
+	write_lock(&proto_list_lock);
 	list_add(&prot->node, &proto_list);
-	rc = 0;
-out_unlock:
 	write_unlock(&proto_list_lock);
+	rc = 0;
+out:
 	return rc;
 }