Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (32 commits)
  [NetLabel]: correct usage of RCU locking
  [TCP]: fix D-SACK cwnd handling
  [NET] napi: use non-interruptible sleep in napi_disable
  [SCTP] net/sctp/auth.c: make 3 functions static
  [TCP]: Add missing I/O AT code to ipv6 side.
  [SCTP]: #if 0 sctp_update_copy_cksum()
  [INET]: Unexport icmpmsg_statistics
  [NET]: Unexport sock_enable_timestamp().
  [TCP]: Make tcp_match_skb_to_sack() static.
  [IRDA]: Make ircomm_tty static.
  [NET] fs/proc/proc_net.c: make a struct static
  [NET] dev_change_name: ignore changes to same name
  [NET]: Document some simple rules for actions
  [NET_CLS_ACT]: Use skb_act_clone
  [NET_CLS_ACT]: Introduce skb_act_clone
  [TCP]: Fix scatterlist handling in MD5 signature support.
  [IPSEC]: Fix scatterlist handling in skb_icv_walk().
  [IPSEC]: Add missing sg_init_table() calls to ESP.
  [CRYPTO]: Initialize TCRYPT on-stack scatterlist objects correctly.
  [CRYPTO]: HMAC needs some more scatterlist fixups.
  ...

1 files changed, 10 insertions, 29 deletions

diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index 805a78e6ed55..f18e88bc86ec 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -504,22 +504,16 @@ int cipso_v4_doi_add(struct cipso_v4_doi *doi_def)
 	INIT_RCU_HEAD(&doi_def->rcu);
 	INIT_LIST_HEAD(&doi_def->dom_list);
 
-	rcu_read_lock();
-	if (cipso_v4_doi_search(doi_def->doi) != NULL)
-		goto doi_add_failure_rlock;
 	spin_lock(&cipso_v4_doi_list_lock);
 	if (cipso_v4_doi_search(doi_def->doi) != NULL)
-		goto doi_add_failure_slock;
+		goto doi_add_failure;
 	list_add_tail_rcu(&doi_def->list, &cipso_v4_doi_list);
 	spin_unlock(&cipso_v4_doi_list_lock);
-	rcu_read_unlock();
 
 	return 0;
 
-doi_add_failure_slock:
+doi_add_failure:
 	spin_unlock(&cipso_v4_doi_list_lock);
-doi_add_failure_rlock:
-	rcu_read_unlock();
 	return -EEXIST;
 }
 
@@ -543,29 +537,23 @@ int cipso_v4_doi_remove(u32 doi,
 	struct cipso_v4_doi *doi_def;
 	struct cipso_v4_domhsh_entry *dom_iter;
 
-	rcu_read_lock();
-	if (cipso_v4_doi_search(doi) != NULL) {
-		spin_lock(&cipso_v4_doi_list_lock);
-		doi_def = cipso_v4_doi_search(doi);
-		if (doi_def == NULL) {
-			spin_unlock(&cipso_v4_doi_list_lock);
-			rcu_read_unlock();
-			return -ENOENT;
-		}
+	spin_lock(&cipso_v4_doi_list_lock);
+	doi_def = cipso_v4_doi_search(doi);
+	if (doi_def != NULL) {
 		doi_def->valid = 0;
 		list_del_rcu(&doi_def->list);
 		spin_unlock(&cipso_v4_doi_list_lock);
+		rcu_read_lock();
 		list_for_each_entry_rcu(dom_iter, &doi_def->dom_list, list)
 			if (dom_iter->valid)
 				netlbl_domhsh_remove(dom_iter->domain,
 						     audit_info);
-		cipso_v4_cache_invalidate();
 		rcu_read_unlock();
-
+		cipso_v4_cache_invalidate();
 		call_rcu(&doi_def->rcu, callback);
 		return 0;
 	}
-	rcu_read_unlock();
+	spin_unlock(&cipso_v4_doi_list_lock);
 
 	return -ENOENT;
 }
@@ -653,22 +641,19 @@ int cipso_v4_doi_domhsh_add(struct cipso_v4_doi *doi_def, const char *domain)
 	new_dom->valid = 1;
 	INIT_RCU_HEAD(&new_dom->rcu);
 
-	rcu_read_lock();
 	spin_lock(&cipso_v4_doi_list_lock);
-	list_for_each_entry_rcu(iter, &doi_def->dom_list, list)
+	list_for_each_entry(iter, &doi_def->dom_list, list)
 		if (iter->valid &&
 		    ((domain != NULL && iter->domain != NULL &&
 		      strcmp(iter->domain, domain) == 0) ||
 		     (domain == NULL && iter->domain == NULL))) {
 			spin_unlock(&cipso_v4_doi_list_lock);
-			rcu_read_unlock();
 			kfree(new_dom->domain);
 			kfree(new_dom);
 			return -EEXIST;
 		}
 	list_add_tail_rcu(&new_dom->list, &doi_def->dom_list);
 	spin_unlock(&cipso_v4_doi_list_lock);
-	rcu_read_unlock();
 
 	return 0;
 }
@@ -689,9 +674,8 @@ int cipso_v4_doi_domhsh_remove(struct cipso_v4_doi *doi_def,
 {
 	struct cipso_v4_domhsh_entry *iter;
 
-	rcu_read_lock();
 	spin_lock(&cipso_v4_doi_list_lock);
-	list_for_each_entry_rcu(iter, &doi_def->dom_list, list)
+	list_for_each_entry(iter, &doi_def->dom_list, list)
 		if (iter->valid &&
 		    ((domain != NULL && iter->domain != NULL &&
 		      strcmp(iter->domain, domain) == 0) ||
@@ -699,13 +683,10 @@ int cipso_v4_doi_domhsh_remove(struct cipso_v4_doi *doi_def,
 			iter->valid = 0;
 			list_del_rcu(&iter->list);
 			spin_unlock(&cipso_v4_doi_list_lock);
-			rcu_read_unlock();
 			call_rcu(&iter->rcu, cipso_v4_doi_domhsh_free);
-
 			return 0;
 		}
 	spin_unlock(&cipso_v4_doi_list_lock);
-	rcu_read_unlock();
 
 	return -ENOENT;
 }