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-rw-r--r--include/linux/ipc_namespace.h1
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