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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-05-09 14:51:53 +0200 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-05-10 04:32:34 +0200 |
| commit | d240e06713007bba309b074a386b7072b73c31a6 (patch) | |
| tree | 3c9133ae5b349aeec8c0a93338b9dd13b9c9dac1 /drivers/infiniband/ulp/ipoib/ipoib_multicast.c | |
| parent | nilfs2: use huge_encode_dev/huge_decode_dev (diff) | |
| download | linux-d240e06713007bba309b074a386b7072b73c31a6.tar.xz linux-d240e06713007bba309b074a386b7072b73c31a6.zip | |
nilfs2: disallow remount of snapshot from/to a regular mount
Snapshots and regular ro/rw mounts are essentially-different within
the meaning whether the checkpoint is static or not and is marked with
a snapshot flag or not.
The current implemenation, however, allows to remount a snapshot to a
regular rw-mount if the checkpoint number equals the latest one.
This transition is actually impossible since changing a checkpoint to
a snapshot makes another checkpoint, thus the condition is never
satisfied.
This fixes the weird state of affairs, and specifically separates
snapshots and regular rw/ro-mounts.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib_multicast.c')
0 files changed, 0 insertions, 0 deletions