Re: [PATCH 2/5] padata: make padata_free_shell() to respect pd's ->refcnt

[Daniel Jordan]

On Fri, Oct 28, 2022 at 10:35:49AM -0400, Daniel Jordan wrote:
> On Wed, Oct 19, 2022 at 10:37:05AM +0200, Nicolai Stange wrote:
> > Fixes: 07928d9bfc81 ("padata: Remove broken queue flushing")
> 
> It looks like this issue goes back to the first padata commit.  For
> instance, pd->refcnt goes to zero after the last _priv is serialized,
> padata_free is called in another task, and a particularly sluggish
> padata_reorder call touches pd after.
> 
> So wouldn't it be
> 
> Fixes: 16295bec6398 ("padata: Generic parallelization/serialization interface")
> 
> ?

I guess not, by my own logic from 2/5.  I think it might be

Fixes: d46a5ac7a7e2 ("padata: Use a timer to handle remaining objects in the reorder queues")