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dm cache: avoid calling policy destructor twice on error

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If the cache policy's config values are not able to be set we must
set the policy to NULL after destroying it in create_cache_policy()
so we don't attempt to destroy it a second time later.

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Heinz Mauelshagen 2013-03-20 17:21:26 +00:00 committed by Alasdair G Kergon
parent 617a0b89da
commit b978440b8d
1 changed files with 4 additions and 1 deletions
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5
drivers/md/dm-cache-target.c
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@ -1763,8 +1763,11 @@ static int create_cache_policy(struct cache *cache, struct cache_args *ca,
}
r = set_config_values(cache->policy, ca->policy_argc, ca->policy_argv);
if (r)
if (r) {
*error = "Error setting cache policy's config values";
dm_cache_policy_destroy(cache->policy);
cache->policy = NULL;
}
return r;
}