extern void *copy_mount_options(const void __user *);
extern char *copy_mount_string(const void __user *);
-extern struct vfsmount *lookup_mnt(struct path *);
+extern struct vfsmount *lookup_mnt(const struct path *);
extern int finish_automount(struct vfsmount *, struct path *);
extern int sb_prepare_remount_readonly(struct super_block *);
loff_t iomap_apply(struct inode *inode, loff_t pos, loff_t length,
unsigned flags, struct iomap_ops *ops, void *data,
iomap_actor_t actor);
+
+/* direct-io.c: */
+int sb_init_dio_done_wq(struct super_block *sb);