Re: + mm-zswap-use-workqueue-to-destroy-pool.patch added to -mm tree

[Dan Streetman]

On Wed, Apr 27, 2016 at 1:40 AM, Sergey Senozhatsky
<sergey.senozhatsky.work@xxxxxxxxx> wrote:
> Hello,
>
> On (04/26/16 16:52), akpm@xxxxxxxxxxxxxxxxxxxx wrote:
> [..]
>> -static void __zswap_pool_release(struct rcu_head *head)
>> +static void __zswap_pool_release(struct work_struct *work)
>>  {
>> -     struct zswap_pool *pool = container_of(head, typeof(*pool), rcu_head);
>> +     struct zswap_pool *pool = container_of(work, typeof(*pool), work);
>> +
>> +     synchronize_rcu();
>>
>>       /* nobody should have been able to get a kref... */
>>       WARN_ON(kref_get_unless_zero(&pool->kref));
>> @@ -674,7 +676,9 @@ static void __zswap_pool_empty(struct kr
>>       WARN_ON(pool == zswap_pool_current());
>>
>>       list_del_rcu(&pool->list);
>> -     call_rcu(&pool->rcu_head, __zswap_pool_release);
>> +
>> +     INIT_WORK(&pool->work, __zswap_pool_release);
>> +     schedule_work(&pool->work);
>>
>>       spin_unlock(&zswap_pools_lock);
>>  }
>> _
>>
>> Patches currently in -mm which might be from ddstreet@xxxxxxxx are
>>
>> mm-zpool-use-workqueue-for-zpool_destroy.patch
>> mm-zswap-use-workqueue-to-destroy-pool.patch
>
> I think only mm-zswap-use-workqueue-to-destroy-pool.patch is
> needed.

yep, please drop mm-zpool-use-workqueue-for-zpool_destroy.patch

thanks!

>
>         -ss