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authorMike Snitzer <snitzer@redhat.com>2016-02-07 02:38:46 +0300
committerMike Snitzer <snitzer@redhat.com>2016-02-22 19:06:21 +0300
commitf083b09b7819c785db4f82a81f68da3bccfb04bf (patch)
tree894fade789e2499a0bd16cb82c2b9ff21982b043 /drivers/md/dm-ioctl.c
parente522c039059b0fdf5ecd15d7007026326fffc9be (diff)
downloadlinux-f083b09b7819c785db4f82a81f68da3bccfb04bf.tar.xz
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-ioctl.c')
-rw-r--r--drivers/md/dm-ioctl.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index 80a439543259..4763c4ae30e4 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1291,7 +1291,8 @@ static int table_load(struct dm_ioctl *param, size_t param_size)
immutable_target_type = dm_get_immutable_target_type(md);
if (immutable_target_type &&
- (immutable_target_type != dm_table_get_immutable_target_type(t))) {
+ (immutable_target_type != dm_table_get_immutable_target_type(t)) &&
+ !dm_table_get_wildcard_target(t)) {
DMWARN("can't replace immutable target type %s",
immutable_target_type->name);
r = -EINVAL;