Re: [PATCH 1/4] Documentation: kernel-parameters: remove slab_max_order

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On Mon, Nov 20, 2023 at 6:12 PM <sxwjean@xxxxxx> wrote:
>
> From: Xiongwei Song <xiongwei.song@xxxxxxxxxxxxx>
>
> Since slab allocator has already been removed. There is no users about
> it, so remove it.
>
> Signed-off-by: Xiongwei Song <xiongwei.song@xxxxxxxxxxxxx>
> ---
>  Documentation/admin-guide/kernel-parameters.txt | 6 ------
>  1 file changed, 6 deletions(-)
>
> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> index 65731b060e3f..c7709a11f8ce 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -5887,12 +5887,6 @@
>                         own.
>                         For more information see Documentation/mm/slub.rst.
>
> -       slab_max_order= [MM, SLAB]
> -                       Determines the maximum allowed order for slabs.
> -                       A high setting may cause OOMs due to memory
> -                       fragmentation.  Defaults to 1 for systems with
> -                       more than 32MB of RAM, 0 otherwise.
> -

Good catch!

By the way I think noaliencache can be removed too in this patch together:
>        noaliencache    [MM, NUMA, SLAB] Disables the allocation of alien
>                       caches in the slab allocator.  Saves per-node memory,
>                      but will impact performance.

Thanks,
Hyeonggon





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