1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h
index 6ab8c1bada3f..c309f43bde45 100644
--- a/include/linux/ipc_namespace.h
+++ b/include/linux/ipc_namespace.h
@@ -19,6 +19,7 @@ struct ipc_ids {
         struct rw_semaphore rwsem;
         struct idr ipcs_idr;
         int max_idx;
+        int last_idx;   /* For wrap around detection */
 #ifdef CONFIG_CHECKPOINT_RESTORE
         int next_id;
 #endif