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-rw-r--r--include/linux/ipc.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/ipc.h b/include/linux/ipc.h
index 1980867a64a..7c8c6d8d090 100644
--- a/include/linux/ipc.h
+++ b/include/linux/ipc.h
@@ -52,6 +52,7 @@ struct ipc_perm
#ifdef __KERNEL__
#include <linux/kref.h>
+#include <linux/spinlock.h>
#define IPCMNI 32768 /* <= MAX_INT limit for ipc arrays (including sysctl changes) */