From 29619809727a4e524e26dbd7bfdc93ff7f50aa74 Mon Sep 17 00:00:00 2001 From: Koji Sato Date: Mon, 6 Apr 2009 19:01:31 -0700 Subject: nilfs2: checkpoint file This adds a meta data file which holds checkpoint entries in its data blocks. Signed-off-by: Koji Sato Signed-off-by: Ryusuke Konishi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/nilfs2/cpfile.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 fs/nilfs2/cpfile.h (limited to 'fs/nilfs2/cpfile.h') diff --git a/fs/nilfs2/cpfile.h b/fs/nilfs2/cpfile.h new file mode 100644 index 00000000000..f097e90fcb2 --- /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 . + */ + +#ifndef _NILFS_CPFILE_H +#define _NILFS_CPFILE_H + +#include +#include +#include + +#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 */ -- cgit v1.2.3