/*
   * JFFS2 -- Journalling Flash File System, Version 2.
   *
   * Copyright © 2001-2007 Red Hat, Inc.
   *
   * Created by David Woodhouse <dwmw2@infradead.org>
   *
   * For licensing information, see the file 'LICENCE' in this directory.
   *
   */
  
  #include <linux/kernel.h>
  #include <linux/mtd/mtd.h>
  #include "nodelist.h"
  
  int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
  			      unsigned long count, loff_t to, size_t *retlen)
  {
  	if (!jffs2_is_writebuffered(c)) {
  		if (jffs2_sum_active()) {
  			int res;
  			res = jffs2_sum_add_kvec(c, vecs, count, (uint32_t) to);
  			if (res) {
  				return res;
  			}
  		}
  	}
  
  	return mtd_writev(c->mtd, vecs, count, to, retlen);
  }
  
  int jffs2_flash_direct_write(struct jffs2_sb_info *c, loff_t ofs, size_t len,
  			size_t *retlen, const u_char *buf)
  {
  	int ret;
  	ret = mtd_write(c->mtd, ofs, len, retlen, buf);
  
  	if (jffs2_sum_active()) {
  		struct kvec vecs[1];
  		int res;
  
  		vecs[0].iov_base = (unsigned char *) buf;
  		vecs[0].iov_len = len;
  
  		res = jffs2_sum_add_kvec(c, vecs, 1, (uint32_t) ofs);
  		if (res) {
  			return res;
  		}
  	}
  	return ret;
  }