1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3 * 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
21 static inline struct nilfs_inode *
22 nilfs_ifile_map_inode(struct inode *ifile, ino_t ino, struct buffer_head *ibh)
23 {
24 void *kaddr = kmap_local_page(ibh->b_page);
25
26 return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr);
27 }
28
29 static inline void nilfs_ifile_unmap_inode(struct nilfs_inode *raw_inode)
30 {
31 kunmap_local(raw_inode);
32 }
33
34 int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **);
35 int nilfs_ifile_delete_inode(struct inode *, ino_t);
36 int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **);
37
38 int nilfs_ifile_count_free_inodes(struct inode *, u64 *, u64 *);
39
40 int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root,
41 __u64 cno, size_t inode_size);
42
43 #endif /* _NILFS_IFILE_H */
44
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