ipc: rename ipc_obtain_object

...  to ipc_obtain_object_idr, which is more meaningful and makes the code
slightly easier to follow.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/ipc/sem.c b/ipc/sem.c
index d1a6edd..bc3d530 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -391,7 +391,7 @@
 	struct kern_ipc_perm *ipcp;
 	struct sem_array *sma;
 
-	ipcp = ipc_obtain_object(&sem_ids(ns), id);
+	ipcp = ipc_obtain_object_idr(&sem_ids(ns), id);
 	if (IS_ERR(ipcp))
 		return ERR_CAST(ipcp);
 
@@ -410,7 +410,7 @@
 
 static inline struct sem_array *sem_obtain_object(struct ipc_namespace *ns, int id)
 {
-	struct kern_ipc_perm *ipcp = ipc_obtain_object(&sem_ids(ns), id);
+	struct kern_ipc_perm *ipcp = ipc_obtain_object_idr(&sem_ids(ns), id);
 
 	if (IS_ERR(ipcp))
 		return ERR_CAST(ipcp);