* [PATCH] dm-cache: destroy migration_cache if cache target registration failed
@ 2018-10-07 6:45 Shenghui Wang
0 siblings, 0 replies; only message in thread
From: Shenghui Wang @ 2018-10-07 6:45 UTC (permalink / raw)
To: agk, snitzer, dm-devel
Destroy migration_cache if cache target registration failed in
dm_cache_init.
Signed-off-by: Shenghui Wang <shhuiw@foxmail.com>
---
drivers/md/dm-cache-target.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
index e13d991e9fb5..c248667f549d 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -3481,17 +3481,16 @@ static struct target_type cache_target = {
static int __init dm_cache_init(void)
{
- int r;
+ int r = -ENOMEM;
migration_cache = KMEM_CACHE(dm_cache_migration, 0);
- if (!migration_cache) {
- dm_unregister_target(&cache_target);
- return -ENOMEM;
- }
+ if (!migration_cache)
+ return r;
r = dm_register_target(&cache_target);
if (r) {
DMERR("cache target registration failed: %d", r);
+ kmem_cache_destroy(migration_cache);
return r;
}
--
2.18.0
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2018-10-07 6:45 [PATCH] dm-cache: destroy migration_cache if cache target registration failed Shenghui Wang
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