1 /* 2 * ifile.h - NILFS inode file 3 * 4 * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * Written by Amagai Yoshiji. 17 * Revised by Ryusuke Konishi. 18 * 19 */ 20 21 #ifndef _NILFS_IFILE_H 22 #define _NILFS_IFILE_H 23 24 #include <linux/fs.h> 25 #include <linux/buffer_head.h> 26 #include <linux/nilfs2_fs.h> 27 #include "mdt.h" 28 #include "alloc.h" 29 30 31 static inline struct nilfs_inode * 32 nilfs_ifile_map_inode(struct inode *ifile, ino_t ino, struct buffer_head *ibh) 33 { 34 void *kaddr = kmap(ibh->b_page); 35 36 return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr); 37 } 38 39 static inline void nilfs_ifile_unmap_inode(struct inode *ifile, ino_t ino, 40 struct buffer_head *ibh) 41 { 42 kunmap(ibh->b_page); 43 } 44 45 int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **); 46 int nilfs_ifile_delete_inode(struct inode *, ino_t); 47 int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **); 48 49 int nilfs_ifile_count_free_inodes(struct inode *, u64 *, u64 *); 50 51 int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root, 52 size_t inode_size, struct nilfs_inode *raw_inode, 53 struct inode **inodep); 54 55 #endif /* _NILFS_IFILE_H */ 56