diff --git a/include/linux/ramfs.h b/include/linux/ramfs.h
index 78ecfa2..00b340b 100644
--- a/include/linux/ramfs.h
+++ b/include/linux/ramfs.h
@@ -2,8 +2,8 @@
 #define _LINUX_RAMFS_H
 
 struct inode *ramfs_get_inode(struct super_block *sb, int mode, dev_t dev);
-struct super_block *ramfs_get_sb(struct file_system_type *fs_type,
-	 int flags, const char *dev_name, void *data);
+extern int ramfs_get_sb(struct file_system_type *fs_type,
+	 int flags, const char *dev_name, void *data, struct vfsmount *mnt);
 
 #ifndef CONFIG_MMU
 extern unsigned long ramfs_nommu_get_unmapped_area(struct file *file,