ipc: sem_putref() does not need the semaphore lock any more

ipc_rcu_putref() uses atomics for the refcount, and the games to lock and unlock the semaphore just to try to keep the reference counting working are no longer useful. Acked-by: Davidlohr Bueso <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Al Viro <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
cbmeeks · May 4, 2013 · 73b2950 · 73b2950
1 parent 6d49dab
commit 73b2950
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/ipc/sem.c b/ipc/sem.c
@@ -329,9 +329,7 @@ static inline void sem_lock_and_putref(struct sem_array *sma)
 
 static inline void sem_putref(struct sem_array *sma)
 {
-	sem_lock_and_putref(sma);
-	sem_unlock(sma, -1);
-	rcu_read_unlock();
+	ipc_rcu_putref(sma);
 }
 
 static inline void sem_rmid(struct ipc_namespace *ns, struct sem_array *s)