Re: [PATCH] mm/slab: stop exporting kvfree_rcu_barrier[_on_cache]()

["Vlastimil Babka (SUSE)" <vbabka@kernel.org>]

On 7/30/26 16:32, Vlastimil Babka (SUSE) wrote:
> No module code calls these functions directly. Seems it was always the
> case. Remove the exports.
> 
> Signed-off-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
> ---
> Based on slab/for-7.3/kfree_rcu_nolock

Applied to that branch and slab/for-next

> ---
>  mm/slab_common.c | 4 ----
>  1 file changed, 4 deletions(-)
> 
> diff --git a/mm/slab_common.c b/mm/slab_common.c
> index 6750dfa27367..cd155ffc2762 100644
> --- a/mm/slab_common.c
> +++ b/mm/slab_common.c
> @@ -1329,14 +1329,12 @@ void kvfree_rcu_barrier(void)
>  	deferred_work_barrier();
>  	rcu_barrier();
>  }
> -EXPORT_SYMBOL_GPL(kvfree_rcu_barrier);
>  
>  void kvfree_rcu_barrier_on_cache(struct kmem_cache *s)
>  {
>  	deferred_work_barrier();
>  	rcu_barrier();
>  }
> -EXPORT_SYMBOL_GPL(kvfree_rcu_barrier_on_cache);
>  
>  void __init kvfree_rcu_init(void)
>  {
> @@ -2163,7 +2161,6 @@ void kvfree_rcu_barrier(void)
>  	flush_all_rcu_sheaves();
>  	__kvfree_rcu_barrier();
>  }
> -EXPORT_SYMBOL_GPL(kvfree_rcu_barrier);
>  
>  /**
>   * kvfree_rcu_barrier_on_cache - Wait for in-flight kvfree_rcu() calls on a
> @@ -2186,7 +2183,6 @@ void kvfree_rcu_barrier_on_cache(struct kmem_cache *s)
>  	rcu_barrier();
>  	__kvfree_rcu_barrier();
>  }
> -EXPORT_SYMBOL_GPL(kvfree_rcu_barrier_on_cache);
>  
>  static unsigned long
>  kfree_rcu_shrink_count(struct shrinker *shrink, struct shrink_control *sc)
> 
> ---
> base-commit: b01f6ed9ff0c4581fc669044fa5b82a93b4ef144
> change-id: 20260730-unexport-barriers-439b3f69f791
>