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

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On Mon, May 27, 2024 at 12:27:14PM -0700, Paul E. McKenney wrote:
> On Mon, May 27, 2024 at 10:13:40AM +0200, Julia Lawall wrote:
> > 
> > 
> > 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.
> 
> Thank you both!
> 
I wanted to take an action on it but Julia was first. So, please go ahead :)

--
Uladzislau Rezki




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