--- a/drivers/mtd/mtdblock.c
+++ b/drivers/mtd/mtdblock.c
@@ -63,7 +63,7 @@ static void erase_callback(struct erase_
 	wake_up(wait_q);
 }
 
-static int erase_write (struct mtd_info *mtd, unsigned long pos,
+int erase_write (struct mtd_info *mtd, unsigned long pos,
 			int len, const char *buf)
 {
 	struct erase_info erase;
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -416,6 +416,9 @@ extern void register_mtd_user (struct mt
 extern int unregister_mtd_user (struct mtd_notifier *old);
 void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size);
 
+int erase_write (struct mtd_info *mtd, unsigned long pos,
+		 int len, const char *buf);
+
 void mtd_erase_callback(struct erase_info *instr);
 
 static inline int mtd_is_bitflip(int err) {