ipc: delete "nr_ipc_ns"

Write-only variable. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Alexey Dobriyan <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
josf · Aug 2, 2016 · 3bd080e · 3bd080e
1 parent a4691de
commit 3bd080e
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diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h
@@ -63,8 +63,6 @@ struct ipc_namespace {
 };
 
 extern struct ipc_namespace init_ipc_ns;
-extern atomic_t nr_ipc_ns;
-
 extern spinlock_t mq_lock;
 
 #ifdef CONFIG_SYSVIPC

diff --git a/ipc/msgutil.c b/ipc/msgutil.c
@@ -37,8 +37,6 @@ struct ipc_namespace init_ipc_ns = {
 #endif
 };
 
-atomic_t nr_ipc_ns = ATOMIC_INIT(1);
-
 struct msg_msgseg {
 	struct msg_msgseg *next;
 	/* the next part of the message follows immediately */

diff --git a/ipc/namespace.c b/ipc/namespace.c
@@ -43,7 +43,6 @@ static struct ipc_namespace *create_ipc_ns(struct user_namespace *user_ns,
 		kfree(ns);
 		return ERR_PTR(err);
 	}
-	atomic_inc(&nr_ipc_ns);
 
 	sem_init_ns(ns);
 	msg_init_ns(ns);
@@ -96,7 +95,6 @@ static void free_ipc_ns(struct ipc_namespace *ns)
 	sem_exit_ns(ns);
 	msg_exit_ns(ns);
 	shm_exit_ns(ns);
-	atomic_dec(&nr_ipc_ns);
 
 	put_user_ns(ns->user_ns);
 	ns_free_inum(&ns->ns);