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| author | Sami Tolvanen <samitolvanen@google.com> | 2015-03-18 15:52:14 +0000 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2015-04-15 12:10:22 -0400 |
| commit | 65ff5b7ddf0541f2b6e5cc59c47bfbf6cbcd91b8 (patch) | |
| tree | 2a5391011a315f42e409a33d8238544451484c14 /drivers/md/dm.c | |
| parent | 0e0e32c16cfd2eeaf4fd4f16aa6cccd1333ce1e0 (diff) | |
| download | op-kernel-dev-65ff5b7ddf0541f2b6e5cc59c47bfbf6cbcd91b8.zip op-kernel-dev-65ff5b7ddf0541f2b6e5cc59c47bfbf6cbcd91b8.tar.gz | |
dm verity: add error handling modes for corrupted blocks
Add device specific modes to dm-verity to specify how corrupted
blocks should be handled. The following modes are defined:
- DM_VERITY_MODE_EIO is the default behavior, where reading a
corrupted block results in -EIO.
- DM_VERITY_MODE_LOGGING only logs corrupted blocks, but does
not block the read.
- DM_VERITY_MODE_RESTART calls kernel_restart when a corrupted
block is discovered.
In addition, each mode sends a uevent to notify userspace of
corruption and to allow further recovery actions.
The driver defaults to previous behavior (DM_VERITY_MODE_EIO)
and other modes can be enabled with an additional parameter to
the verity table.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 944cdb3..f8c7ca3 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -3483,6 +3483,7 @@ struct gendisk *dm_disk(struct mapped_device *md) { return md->disk; } +EXPORT_SYMBOL_GPL(dm_disk); struct kobject *dm_kobject(struct mapped_device *md) { |
