diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 29e3455f..ff0b665 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -386,4 +386,6 @@
 	__dquot_free_space(inode, nr << inode->i_blkbits, DQUOT_SPACE_RESERVE);
 }
 
+unsigned int qtype_enforce_flag(int type);
+
 #endif /* _LINUX_QUOTAOPS_ */