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 "mdt.h" 27 #include "alloc.h" 28 29 30 static inline struct nilfs_inode * nilfs_ifile_map_inode(struct inode * ifile,ino_t ino,struct buffer_head * ibh)31 nilfs_ifile_map_inode(struct inode *ifile, ino_t ino, struct buffer_head *ibh) 32 { 33 void *kaddr = kmap(ibh->b_page); 34 35 return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr); 36 } 37 nilfs_ifile_unmap_inode(struct inode * ifile,ino_t ino,struct buffer_head * ibh)38 static inline void nilfs_ifile_unmap_inode(struct inode *ifile, ino_t ino, 39 struct buffer_head *ibh) 40 { 41 kunmap(ibh->b_page); 42 } 43 44 int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **); 45 int nilfs_ifile_delete_inode(struct inode *, ino_t); 46 int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **); 47 48 int nilfs_ifile_count_free_inodes(struct inode *, u64 *, u64 *); 49 50 int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root, 51 size_t inode_size, struct nilfs_inode *raw_inode, 52 struct inode **inodep); 53 54 #endif /* _NILFS_IFILE_H */ 55