diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 32ffea0..864090e 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -38,6 +38,7 @@
 #include <linux/inet.h>
 #include <linux/errno.h>
 #include <linux/delay.h>
+#include <linux/sched.h>
 #include <linux/sunrpc/xdr.h>
 #include <linux/sunrpc/svc.h>
 #include <linux/sunrpc/clnt.h>