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>

ipc/msg.c

@@ -76,7 +76,7 @@ struct msg_sender {
 
 static inline struct msg_queue *msq_obtain_object(struct ipc_namespace *ns, int id)
 {
-	struct kern_ipc_perm *ipcp = ipc_obtain_object(&msg_ids(ns), id);
+	struct kern_ipc_perm *ipcp = ipc_obtain_object_idr(&msg_ids(ns), id);
 
 	if (IS_ERR(ipcp))
 		return ERR_CAST(ipcp);

ipc/sem.c

@@ -391,7 +391,7 @@ static inline struct sem_array *sem_obtain_lock(struct ipc_namespace *ns,
 	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_lock(struct ipc_namespace *ns,
 
 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);

ipc/shm.c

@@ -129,7 +129,7 @@ void __init shm_init(void)
 
 static inline struct shmid_kernel *shm_obtain_object(struct ipc_namespace *ns, int id)
 {
-	struct kern_ipc_perm *ipcp = ipc_obtain_object(&shm_ids(ns), id);
+	struct kern_ipc_perm *ipcp = ipc_obtain_object_idr(&shm_ids(ns), id);
 
 	if (IS_ERR(ipcp))
 		return ERR_CAST(ipcp);

ipc/util.c

@@ -555,7 +555,7 @@ void ipc64_perm_to_ipc_perm(struct ipc64_perm *in, struct ipc_perm *out)
  * Call inside the RCU critical section.
  * The ipc object is *not* locked on exit.
  */
-struct kern_ipc_perm *ipc_obtain_object(struct ipc_ids *ids, int id)
+struct kern_ipc_perm *ipc_obtain_object_idr(struct ipc_ids *ids, int id)
 {
 	struct kern_ipc_perm *out;
 	int lid = ipcid_to_idx(id);
@@ -581,7 +581,7 @@ struct kern_ipc_perm *ipc_lock(struct ipc_ids *ids, int id)
 	struct kern_ipc_perm *out;
 
 	rcu_read_lock();
-	out = ipc_obtain_object(ids, id);
+	out = ipc_obtain_object_idr(ids, id);
 	if (IS_ERR(out))
 		goto err1;
 
@@ -605,7 +605,7 @@ err1:
  * @ids: ipc identifier set
  * @id: ipc id to look for
  *
- * Similar to ipc_obtain_object() but also checks
+ * Similar to ipc_obtain_object_idr() but also checks
  * the ipc object reference counter.
  *
  * Call inside the RCU critical section.
@@ -613,7 +613,7 @@ err1:
  */
 struct kern_ipc_perm *ipc_obtain_object_check(struct ipc_ids *ids, int id)
 {
-	struct kern_ipc_perm *out = ipc_obtain_object(ids, id);
+	struct kern_ipc_perm *out = ipc_obtain_object_idr(ids, id);
 
 	if (IS_ERR(out))
 		goto out;

ipc/util.h

@@ -132,7 +132,7 @@ void ipc_rcu_putref(void *ptr, void (*func)(struct rcu_head *head));
 void ipc_rcu_free(struct rcu_head *head);
 
 struct kern_ipc_perm *ipc_lock(struct ipc_ids *, int);
-struct kern_ipc_perm *ipc_obtain_object(struct ipc_ids *ids, int id);
+struct kern_ipc_perm *ipc_obtain_object_idr(struct ipc_ids *ids, int id);
 
 void kernel_to_ipc64_perm(struct kern_ipc_perm *in, struct ipc64_perm *out);
 void ipc64_perm_to_ipc_perm(struct ipc64_perm *in, struct ipc_perm *out);