ipc/util: drop ipc_rcu_free()

There are no more callers of ipc_rcu_free(), so remove it.

Link: http://lkml.kernel.org/r/20170525185107.12869-9-manfred@colorfullife.com
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/ipc/util.c b/ipc/util.c
index dd73feb..556884b 100644 (file)
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -429,13 +429,6 @@ void ipc_rcu_putref(struct kern_ipc_perm *ptr,
        call_rcu(&ptr->rcu, func);
 }
 
-void ipc_rcu_free(struct rcu_head *h)
-{
-       struct kern_ipc_perm *ptr = container_of(h, struct kern_ipc_perm, rcu);
-
-       kvfree(ptr);
-}
-
 /**
  * ipcperms - check ipc permissions
  * @ns: ipc namespace

diff --git a/ipc/util.h b/ipc/util.h
index 2578fd9..44efbc0 100644 (file)
--- a/ipc/util.h
+++ b/ipc/util.h
@@ -119,7 +119,6 @@ struct kern_ipc_perm *ipc_rcu_alloc(int size);
 int ipc_rcu_getref(struct kern_ipc_perm *ptr);
 void ipc_rcu_putref(struct kern_ipc_perm *ptr,
                        void (*func)(struct rcu_head *head));
-void ipc_rcu_free(struct rcu_head *h);
 
 struct kern_ipc_perm *ipc_lock(struct ipc_ids *, int);
 struct kern_ipc_perm *ipc_obtain_object_idr(struct ipc_ids *ids, int id);