diff options
| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-08-27 00:23:02 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-10-23 09:24:34 +0900 |
| commit | 8e656fd518784b49453f60c5f78b78703bc85cb2 (patch) | |
| tree | 7adf4b71aba4bdf31dc05489a06933c48a0ea6f2 /include/linux | |
| parent | 4d8d9293dce503eb0e083e17a02a328d397e7f00 (diff) | |
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 'include/linux')
| -rw-r--r-- | include/linux/exportfs.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h index a9cd507f8cd2..28028988c862 100644 --- a/include/linux/exportfs.h +++ b/include/linux/exportfs.h @@ -67,6 +67,19 @@ enum fid_type { * 32 bit parent block number, 32 bit parent generation number */ FILEID_UDF_WITH_PARENT = 0x52, + + /* + * 64 bit checkpoint number, 64 bit inode number, + * 32 bit generation number. + */ + FILEID_NILFS_WITHOUT_PARENT = 0x61, + + /* + * 64 bit checkpoint number, 64 bit inode number, + * 32 bit generation number, 32 bit parent generation. + * 64 bit parent inode number. + */ + FILEID_NILFS_WITH_PARENT = 0x62, }; struct fid { |