diff --git a/include/linux/shm.h b/include/linux/shm.h
index fd206387048a..6fb801686ad6 100644
--- a/include/linux/shm.h
+++ b/include/linux/shm.h
@@ -52,7 +52,7 @@ struct sysv_shm {
 
 long do_shmat(int shmid, char __user *shmaddr, int shmflg, unsigned long *addr,
 	      unsigned long shmlba);
-extern int is_file_shm_hugepages(struct file *file);
+int is_file_shm_hugepages(struct file *file);
 void exit_shm(struct task_struct *task);
 #define shm_init_task(task) INIT_LIST_HEAD(&(task)->sysvshm.shm_clist)
 #else