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| author | Koji Sato <sato.koji@lab.ntt.co.jp> | 2009-04-06 19:01:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-07 08:31:14 -0700 |
| commit | 29619809727a4e524e26dbd7bfdc93ff7f50aa74 (patch) | |
| tree | 2c765d9a5d122bc66c5d01079eeadae4edf61a24 /fs/nilfs2/cpfile.h | |
| parent | 43bfb45ed4feace26157778889be55e4046b7a4b (diff) | |
| download | linux-29619809727a4e524e26dbd7bfdc93ff7f50aa74.tar.gz linux-29619809727a4e524e26dbd7bfdc93ff7f50aa74.tar.bz2 linux-29619809727a4e524e26dbd7bfdc93ff7f50aa74.zip | |
nilfs2: checkpoint file
This adds a meta data file which holds checkpoint entries in its data
blocks.
Signed-off-by: Koji Sato <sato.koji@lab.ntt.co.jp>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nilfs2/cpfile.h')
| -rw-r--r-- | fs/nilfs2/cpfile.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/fs/nilfs2/cpfile.h b/fs/nilfs2/cpfile.h new file mode 100644 index 000000000000..f097e90fcb20 --- /dev/null +++ b/fs/nilfs2/cpfile.h @@ -0,0 +1,45 @@ +/* + * cpfile.h - NILFS checkpoint 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 Koji Sato <koji@osrg.net>. + */ + +#ifndef _NILFS_CPFILE_H +#define _NILFS_CPFILE_H + +#include <linux/fs.h> +#include <linux/buffer_head.h> +#include <linux/nilfs2_fs.h> + +#define NILFS_CPFILE_GFP NILFS_MDT_GFP + + +int nilfs_cpfile_get_checkpoint(struct inode *, __u64, int, + struct nilfs_checkpoint **, + struct buffer_head **); +void nilfs_cpfile_put_checkpoint(struct inode *, __u64, struct buffer_head *); +int nilfs_cpfile_delete_checkpoints(struct inode *, __u64, __u64); +int nilfs_cpfile_delete_checkpoint(struct inode *, __u64); +int nilfs_cpfile_change_cpmode(struct inode *, __u64, int); +int nilfs_cpfile_is_snapshot(struct inode *, __u64); +int nilfs_cpfile_get_stat(struct inode *, struct nilfs_cpstat *); +ssize_t nilfs_cpfile_get_cpinfo(struct inode *, __u64, int, + struct nilfs_cpinfo *, size_t); + +#endif /* _NILFS_CPFILE_H */ |