diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h
index 74cece8..9bc72de 100644
--- a/fs/nilfs2/nilfs.h
+++ b/fs/nilfs2/nilfs.h
@@ -277,6 +277,7 @@
 extern void nilfs_truncate(struct inode *);
 extern void nilfs_evict_inode(struct inode *);
 extern int nilfs_setattr(struct dentry *, struct iattr *);
+extern void nilfs_write_failed(struct address_space *mapping, loff_t to);
 int nilfs_permission(struct inode *inode, int mask);
 int nilfs_load_inode_block(struct inode *inode, struct buffer_head **pbh);
 extern int nilfs_inode_dirty(struct inode *);