From 43bfb45ed4feace26157778889be55e4046b7a4b Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Mon, 6 Apr 2009 19:01:30 -0700 Subject: nilfs2: inode map file This adds a meta data file which stores on-disk inodes in its data blocks. Signed-off-by: Ryusuke Konishi Signed-off-by: Yoshiji Amagai Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/nilfs2/ifile.h | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 fs/nilfs2/ifile.h (limited to 'fs/nilfs2/ifile.h') diff --git a/fs/nilfs2/ifile.h b/fs/nilfs2/ifile.h new file mode 100644 index 00000000000..5d30a35679b --- /dev/null +++ b/fs/nilfs2/ifile.h @@ -0,0 +1,53 @@ +/* + * ifile.h - NILFS inode file + * + * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + * Written by Amagai Yoshiji + * Revised by Ryusuke Konishi + * + */ + +#ifndef _NILFS_IFILE_H +#define _NILFS_IFILE_H + +#include +#include +#include +#include "mdt.h" +#include "alloc.h" + +#define NILFS_IFILE_GFP NILFS_MDT_GFP + +static inline struct nilfs_inode * +nilfs_ifile_map_inode(struct inode *ifile, ino_t ino, struct buffer_head *ibh) +{ + void *kaddr = kmap(ibh->b_page); + return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr); +} + +static inline void nilfs_ifile_unmap_inode(struct inode *ifile, ino_t ino, + struct buffer_head *ibh) +{ + kunmap(ibh->b_page); +} + +int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **); +int nilfs_ifile_delete_inode(struct inode *, ino_t); +int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **); + +#endif /* _NILFS_IFILE_H */ -- cgit v1.2.3