diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h
index a6d1655f9607d..f1605b554fbb3 100644
--- a/include/linux/ipc_namespace.h
+++ b/include/linux/ipc_namespace.h
@@ -42,8 +42,8 @@ struct ipc_namespace {
 
 	size_t		shm_ctlmax;
 	size_t		shm_ctlall;
+	unsigned long	shm_tot;
 	int		shm_ctlmni;
-	int		shm_tot;
 
 	struct notifier_block ipcns_nb;
 
diff --git a/ipc/shm.c b/ipc/shm.c
index ab3385a21b27a..10e17a7ccadac 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -343,7 +343,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
 	size_t size = params->u.size;
 	int error;
 	struct shmid_kernel *shp;
-	int numpages = (size + PAGE_SIZE -1) >> PAGE_SHIFT;
+	size_t numpages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
 	struct file * file;
 	char name[13];
 	int id;