jffs2_flash_write
ret = jffs2_flash_write(c, phys_ofs, rawlen, &retlen, (char *)node);
ret = jffs2_flash_write(c, ref_offset(ref), sizeof(n), &retlen, (char *)&n);
int jffs2_flash_write(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *retlen, const u_char *buf);
ret = jffs2_flash_write(c, phys_ofs, sizeof(rr), &length, (char *)&rr);