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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-08-27 00:23:02 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-10-23 09:24:34 +0900
commit8e656fd518784b49453f60c5f78b78703bc85cb2 (patch)
tree7adf4b71aba4bdf31dc05489a06933c48a0ea6f2 /fs/nilfs2/export.h
parent4d8d9293dce503eb0e083e17a02a328d397e7f00 (diff)
downloadop-kernel-dev-8e656fd518784b49453f60c5f78b78703bc85cb2.zip
op-kernel-dev-8e656fd518784b49453f60c5f78b78703bc85cb2.tar.gz
nilfs2: make snapshots in checkpoint tree exportable
The previous export operations cannot handle multiple versions of a filesystem if they belong to the same sb instance. This adds a new type of file handle and extends export operations so that they can get the inode specified by a checkpoint number as well as an inode number and a generation number. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/export.h')
-rw-r--r--fs/nilfs2/export.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/nilfs2/export.h b/fs/nilfs2/export.h
new file mode 100644
index 0000000..a71cc41
--- /dev/null
+++ b/fs/nilfs2/export.h
@@ -0,0 +1,17 @@
+#ifndef NILFS_EXPORT_H
+#define NILFS_EXPORT_H
+
+#include <linux/exportfs.h>
+
+extern const struct export_operations nilfs_export_ops;
+
+struct nilfs_fid {
+ u64 cno;
+ u64 ino;
+ u32 gen;
+
+ u32 parent_gen;
+ u64 parent_ino;
+} __attribute__ ((packed));
+
+#endif
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