diff mbox

[07/12] Staging: batman-adv: Remove unneeded rcu_read_lock

Message ID 1284836482-23431-8-git-send-email-sven.eckelmann@gmx.de (mailing list archive)
State Not Applicable, archived
Headers

Commit Message

Sven Eckelmann Sept. 18, 2010, 7:01 p.m. UTC 
  Regions which do not use rcu functions don't need to protected by
rcu_read_lock. If we want to protect data from being freed than it must
be covered by the same read-side critical section or otherwise the grace
period may already ended and freed the memory before we called
rcu_read_lock again.

Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
---
 drivers/staging/batman-adv/originator.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/drivers/staging/batman-adv/originator.c b/drivers/staging/batman-adv/originator.c
index f25d7fd..c530df1 100644
--- a/drivers/staging/batman-adv/originator.c
+++ b/drivers/staging/batman-adv/originator.c
@@ -329,7 +329,6 @@  int orig_seq_print_text(struct seq_file *seq, void *offset)
 				  net_dev->name);
 	}
 
-	rcu_read_lock();
 	seq_printf(seq, "[B.A.T.M.A.N. adv %s%s, MainIF/MAC: %s/%s (%s)]\n",
 		   SOURCE_VERSION, REVISION_VERSION_STR,
 		   bat_priv->primary_if->net_dev->name,
@@ -337,7 +336,6 @@  int orig_seq_print_text(struct seq_file *seq, void *offset)
 	seq_printf(seq, "  %-15s %s (%s/%i) %17s [%10s]: %20s ...\n",
 		   "Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop",
 		   "outgoingIF", "Potential nexthops");
-	rcu_read_unlock();
 
 	spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);