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block: remove unnecessary condition check

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kmem_cache_destroy() can handle NULL pointer correctly, so there is
no need to check e->icq_cache before calling kmem_cache_destroy().

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Chengguang Xu 2018-08-28 07:31:11 +08:00 committed by Jens Axboe
parent 46cb52ad41
commit 62d2a19407
1 changed files with 1 additions and 2 deletions
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3
block/elevator.c
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@ -895,8 +895,7 @@ int elv_register(struct elevator_type *e)
spin_lock(&elv_list_lock);
if (elevator_find(e->elevator_name, e->uses_mq)) {
spin_unlock(&elv_list_lock);
if (e->icq_cache)
kmem_cache_destroy(e->icq_cache);
kmem_cache_destroy(e->icq_cache);
return -EBUSY;
}
list_add_tail(&e->list, &elv_list);