diff options
| author | Mike Snitzer <snitzer@redhat.com> | 2016-02-06 18:38:46 -0500 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2016-02-22 11:06:21 -0500 |
| commit | f083b09b7819c785db4f82a81f68da3bccfb04bf (patch) | |
| tree | 894fade789e2499a0bd16cb82c2b9ff21982b043 /drivers/md/dm.h | |
| parent | e522c039059b0fdf5ecd15d7007026326fffc9be (diff) | |
| download | linux-f083b09b7819c785db4f82a81f68da3bccfb04bf.tar.bz2 | |
dm: set DM_TARGET_WILDCARD feature on "error" target
The DM_TARGET_WILDCARD feature indicates that the "error" target may
replace any target; even immutable targets. This feature will be useful
to preserve the ability to replace the "multipath" target even once it
is formally converted over to having the DM_TARGET_IMMUTABLE feature.
Also, implicit in the DM_TARGET_WILDCARD feature flag being set is that
.map, .map_rq, .clone_and_map_rq and .release_clone_rq are all defined
in the target_type.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm.h')
| -rw-r--r-- | drivers/md/dm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/dm.h b/drivers/md/dm.h index 7edcf97dfa5a..53df2585571b 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -73,6 +73,7 @@ int dm_table_resume_targets(struct dm_table *t); int dm_table_any_congested(struct dm_table *t, int bdi_bits); unsigned dm_table_get_type(struct dm_table *t); struct target_type *dm_table_get_immutable_target_type(struct dm_table *t); +struct dm_target *dm_table_get_wildcard_target(struct dm_table *t); bool dm_table_request_based(struct dm_table *t); bool dm_table_mq_request_based(struct dm_table *t); void dm_table_free_md_mempools(struct dm_table *t); |