LXR linux/fs/nilfs2/direct.h

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * direct.h - NILFS direct block pointer.
   4 *
   5 * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
   6 *
   7 * Written by Koji Sato.
   8 */
   9
  10#ifndef _NILFS_DIRECT_H
  11#define _NILFS_DIRECT_H
  12
  13#include <linux/types.h>
  14#include <linux/buffer_head.h>
  15#include "bmap.h"
  16
  17
  18#define NILFS_DIRECT_NBLOCKS    (NILFS_BMAP_SIZE / sizeof(__le64) - 1)
  19#define NILFS_DIRECT_KEY_MIN    0
  20#define NILFS_DIRECT_KEY_MAX    (NILFS_DIRECT_NBLOCKS - 1)
  21
  22
  23int nilfs_direct_init(struct nilfs_bmap *);
  24int nilfs_direct_delete_and_convert(struct nilfs_bmap *, __u64, __u64 *,
  25                                    __u64 *, int);
  26
  27
  28#endif  /* _NILFS_DIRECT_H */
  29