ipc,msg: drop msg_unlock

There is only one user left, drop this function and just call
ipc_unlock_object() and rcu_read_unlock().

Signed-off-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/ipc/msg.c b/ipc/msg.c
index 8203e71bcfbc..b0d541d42677 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -70,8 +70,6 @@ struct msg_sender {
 
 #define msg_ids(ns)     ((ns)->ids[IPC_MSG_IDS])
 
-#define msg_unlock(msq)         ipc_unlock(&(msq)->q_perm)
-
 static void freeque(struct ipc_namespace *, struct kern_ipc_perm *);
 static int newque(struct ipc_namespace *, struct ipc_params *);
 #ifdef CONFIG_PROC_FS
@@ -270,7 +268,8 @@ static void freeque(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp)
         expunge_all(msq, -EIDRM);
         ss_wakeup(&msq->q_senders, 1);
         msg_rmid(ns, msq);
-        msg_unlock(msq);
+        ipc_unlock_object(&msq->q_perm);
+        rcu_read_unlock();
 
         list_for_each_entry_safe(msg, t, &msq->q_messages, m_list) {
                 atomic_dec(&ns->msg_hdrs);