diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index 004f3b3..0c6a86b 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -43,6 +43,7 @@
 int seq_escape(struct seq_file *, const char *, const char *);
 int seq_putc(struct seq_file *m, char c);
 int seq_puts(struct seq_file *m, const char *s);
+int seq_write(struct seq_file *seq, const void *data, size_t len);
 
 int seq_printf(struct seq_file *, const char *, ...)
 	__attribute__ ((format (printf,2,3)));