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 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(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 inode *ifile, ino_t ino, 30 struct buffer_head *ibh) 31 { 32 kunmap(ibh->b_page); 33 } 34 35 int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **); 36 int nilfs_ifile_delete_inode(struct inode *, ino_t); 37 int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **); 38 39 int nilfs_ifile_count_free_inodes(struct inode *, u64 *, u64 *); 40 41 int 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