diff options
| author |   Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-08-15 23:33:57 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-10-23 09:24:35 +0900 |
| commit | dc3d3b810a644dfa329efaa230cd514226f8981d (patch) | |
| tree | e0a2c2bfb3edb6b1fa4383cb2d1f52adb653c9e2 /fs/nilfs2/the_nilfs.c | |
| parent | nilfs2: use checkpoint tree for mount check of snapshots (diff) | |
| download | linux-dev-dc3d3b810a644dfa329efaa230cd514226f8981d.tar.xz linux-dev-dc3d3b810a644dfa329efaa230cd514226f8981d.zip | |
nilfs2: deny write access to inodes in snapshots
Snapshots of nilfs are read-only.
After super block instances (sb) will be unified, nilfs will need to
check write access by a way other than implicit test with
IS_RDONLY(inode). This is because IS_RDONLY() refers to MS_RDONLY bit
of inode->i_sb->s_flags and it will become inaccurate after the
unification of sb.
To prepare for the issue, this uses i_op->permission to deny write
access to inodes in snapshots.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/the_nilfs.c')
0 files changed, 0 insertions, 0 deletions