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-rw-r--r--ipc/util.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/ipc/util.h b/ipc/util.h
index 67bdd2aa2c28d..a55d6cebe6d3b 100644
--- a/ipc/util.h
+++ b/ipc/util.h
@@ -14,6 +14,7 @@
#include <linux/unistd.h>
#include <linux/err.h>
#include <linux/ipc_namespace.h>
+#include <linux/pid.h>
/*
* The IPC ID contains 2 separate numbers - index and sequence number.