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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 e4451d1da75..878d7ac286f 100644
--- a/include/linux/ipc_namespace.h
+++ b/include/linux/ipc_namespace.h
@@ -33,6 +33,7 @@ struct ipc_namespace {
};
extern struct ipc_namespace init_ipc_ns;
+extern atomic_t nr_ipc_ns;
#ifdef CONFIG_SYSVIPC
#define INIT_IPC_NS(ns) .ns = &init_ipc_ns,