diff --git a/[refs] b/[refs]
index d88721ac72dd..f9ce64867d1d 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7e81ab9d3d9a22fb7b20c56f0cabc8ef51954014
+refs/heads/master: 4b8df8915a6980f476e1fa8f4d156e36cb63bf76
diff --git a/trunk/fs/proc/base.c b/trunk/fs/proc/base.c
index 3c41149dea88..a5fa1fdafc4e 100644
--- a/trunk/fs/proc/base.c
+++ b/trunk/fs/proc/base.c
@@ -708,6 +708,7 @@ static const struct file_operations proc_oom_adjust_operations = {
 	.write		= oom_adjust_write,
 };
 
+#ifdef CONFIG_MMU
 static ssize_t clear_refs_write(struct file *file, const char __user *buf,
 				size_t count, loff_t *ppos)
 {
@@ -741,6 +742,7 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf,
 static struct file_operations proc_clear_refs_operations = {
 	.write		= clear_refs_write,
 };
+#endif
 
 #ifdef CONFIG_AUDITSYSCALL
 #define TMPBUFLEN 21