Re: [cocci] patch idea: convert trivial call_rcu users to kfree_rcu

[Julia Lawall]

On Mon, 27 May 2024, Vlastimil Babka wrote:

> Hi,
>
> one bit from LSF/MM discussions is that there might be call_rcu users with a
> callback that only does a kmem_cache_free() to a specific cache. Since SLOB
> was removed, it's always ok to use kfree() and thus also kfree_rcu() on
> allocations from kmem_cache_alloc() in addition to kmalloc(). Thus, such
> call_rcu() users might be simplified to kfree_rcu(). I found some cases
> semi-manually, but I'd expect coccinelle could help here so if anyone wants
> to take this task, feel free to.

Thanks for the suggestion!  I will try to look into it.

julia