From: Xiongwei Song <xiongwei.song@windriver.com>

Since slab allocator has already been removed. There is no users about
it, so remove it.

Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com>
---
 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.
-
 	slub_debug[=options[,slabs][;[options[,slabs]]...]	[MM, SLUB]
 			Enabling slub_debug allows one to determine the
 			culprit if slab objects become corrupted. Enabling
-- 
2.34.1

On Mon, Nov 20, 2023 at 6:12 PM <sxwjean@me.com> wrote:
>
> From: Xiongwei Song <xiongwei.song@windriver.com>
>
> Since slab allocator has already been removed. There is no users about
> it, so remove it.
>
> Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com>
> ---
>  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

> -----Original Message-----
> From: owner-linux-mm@kvack.org <owner-linux-mm@kvack.org> On Behalf Of Hyeonggon
> Yoo
> Sent: Tuesday, November 21, 2023 4:30 PM
> To: sxwjean@me.com
> Cc: cl@linux.com; penberg@kernel.org; rientjes@google.com; iamjoonsoo.kim@lge.com;
> vbabka@suse.cz; roman.gushchin@linux.dev; corbet@lwn.net; linux-mm@kvack.org; linux-
> doc@vger.kernel.org; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH 1/4] Documentation: kernel-parameters: remove slab_max_order
> 
> CAUTION: This email comes from a non Wind River email account!
> Do not click links or open attachments unless you recognize the sender and know the
> content is safe.
> 
> On Mon, Nov 20, 2023 at 6:12 PM <sxwjean@me.com> wrote:
> >
> > From: Xiongwei Song <xiongwei.song@windriver.com>
> >
> > Since slab allocator has already been removed. There is no users about
> > it, so remove it.
> >
> > Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com>
> > ---
> >  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:

Thanks Hyeonggon. Will do that.

Regards,
Xiongwei

> >        noaliencache    [MM, NUMA, SLAB] Disables the allocation of alien
> >                       caches in the slab allocator.  Saves per-node memory,
> >                      but will impact performance.
> 
> Thanks,
> Hyeonggon