1 files changed, 1 insertions, 0 deletions

diff --git a/mm/slab.c b/mm/slab.c
index f378d027c684..233e39d14caf 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -107,6 +107,7 @@
 #include        <linux/nodemask.h>
 #include        <linux/mempolicy.h>
 #include        <linux/mutex.h>
+#include        <linux/rtmutex.h>
 
 #include        <asm/uaccess.h>
 #include        <asm/cacheflush.h>