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authorKoji Sato <sato.koji@lab.ntt.co.jp>2009-04-07 06:01:31 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-07 19:31:14 +0400
commit29619809727a4e524e26dbd7bfdc93ff7f50aa74 (patch)
tree2c765d9a5d122bc66c5d01079eeadae4edf61a24 /fs/nilfs2/cpfile.h
parent43bfb45ed4feace26157778889be55e4046b7a4b (diff)
downloadlinux-29619809727a4e524e26dbd7bfdc93ff7f50aa74.tar.xz
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.h45
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 */