LXR linux/fs/nilfs2/ifile.h

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * ifile.h - NILFS inode file
   4 *
   5 * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
   6 *
   7 * Written by Amagai Yoshiji.
   8 * Revised by Ryusuke Konishi.
   9 *
  10 */
  11
  12#ifndef _NILFS_IFILE_H
  13#define _NILFS_IFILE_H
  14
  15#include <linux/fs.h>
  16#include <linux/buffer_head.h>
  17#include "mdt.h"
  18#include "alloc.h"
  19
  20
  21static inline struct nilfs_inode *
  22nilfs_ifile_map_inode(struct inode *ifile, ino_t ino, struct buffer_head *ibh)
  23{
  24        void *kaddr = kmap(ibh->b_page);
  25
  26        return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr);
  27}
  28
  29static inline void nilfs_ifile_unmap_inode(struct inode *ifile, ino_t ino,
  30                                           struct buffer_head *ibh)
  31{
  32        kunmap(ibh->b_page);
  33}
  34
  35int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **);
  36int nilfs_ifile_delete_inode(struct inode *, ino_t);
  37int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **);
  38
  39int nilfs_ifile_count_free_inodes(struct inode *, u64 *, u64 *);
  40
  41int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root,
  42                     size_t inode_size, struct nilfs_inode *raw_inode,
  43                     struct inode **inodep);
  44
  45#endif  /* _NILFS_IFILE_H */
  46