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 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 19 * 20 * Written by Amagai Yoshiji <amagai@osrg.net> 21 * Revised by Ryusuke Konishi <ryusuke@osrg.net> 22 * 23 */ 24 25 #ifndef _NILFS_IFILE_H 26 #define _NILFS_IFILE_H 27 28 #include <linux/fs.h> 29 #include <linux/buffer_head.h> 30 #include <linux/nilfs2_fs.h> 31 #include "mdt.h" 32 #include "alloc.h" 33 34 35 static inline struct nilfs_inode * 36 nilfs_ifile_map_inode(struct inode *ifile, ino_t ino, struct buffer_head *ibh) 37 { 38 void *kaddr = kmap(ibh->b_page); 39 return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr); 40 } 41 42 static inline void nilfs_ifile_unmap_inode(struct inode *ifile, ino_t ino, 43 struct buffer_head *ibh) 44 { 45 kunmap(ibh->b_page); 46 } 47 48 int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **); 49 int nilfs_ifile_delete_inode(struct inode *, ino_t); 50 int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **); 51 52 int nilfs_ifile_count_free_inodes(struct inode *, u64 *, u64 *); 53 54 int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root, 55 size_t inode_size, struct nilfs_inode *raw_inode, 56 struct inode **inodep); 57 58 #endif /* _NILFS_IFILE_H */ 59