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Date: Thu, 7 Dec 2023 11:45:43 +0900
From: Hyeonggon Yoo <>
To: Vlastimil Babka <>
Cc: David Rientjes <>, Christoph Lameter <>,
	Pekka Enberg <>,
	Joonsoo Kim <>,
	Andrew Morton <>,
	Roman Gushchin <>,
	Andrey Ryabinin <>,
	Alexander Potapenko <>,
	Andrey Konovalov <>,
	Dmitry Vyukov <>,
	Vincenzo Frascino <>,
	Marco Elver <>,
	Johannes Weiner <>,
	Michal Hocko <>,
	Shakeel Butt <>,
	Muchun Song <>,
	Kees Cook <>,,,,,,
	Michal Hocko <>
Subject: Re: [PATCH v2 00/21] remove the SLAB allocator

On Mon, Nov 20, 2023 at 07:34:11PM +0100, Vlastimil Babka wrote:
> Changes from v1:
> - Added new Patch 01 to fix up kernel docs build (thanks Marco Elver)
> - Additional changes to Kconfig user visible texts in Patch 02 (thanks Kees
>   Cook)
> - Whitespace fixes and other fixups (thanks Kees)
> The SLAB allocator has been deprecated since 6.5 and nobody has objected
> so far. As we agreed at LSF/MM, we should wait with the removal until
> the next LTS kernel is released. This is now determined to be 6.6, and
> we just missed 6.7, so now we can aim for 6.8 and start exposing the
> removal to linux-next during the 6.7 cycle. If nothing substantial pops
> up, will start including this in slab-next later this week.

I've been testing this for a few weeks on my testing system,
It passed a set of mm and slab tests on various SLUB configurations.

For the series, feel free to add:
Tested-by: Hyeonggon Yoo <>


> To keep the series reasonably sized and not pull in people from other
> subsystems than mm and closely related ones, I didn't attempt to remove
> every trace of unnecessary reference to dead config options in external
> areas, nor in the defconfigs. Such cleanups can be sent to and handled
> by respective maintainers after this is merged.
> Instead I have added some patches aimed to reap some immediate benefits
> of the removal, mainly by not having to split some fastpath code between
> slab_common.c and slub.c anymore. But that is also not an exhaustive
> effort and I expect more cleanups and optimizations will follow later.
> Patch 09 updates CREDITS for the removed mm/slab.c. Please point out if
> I missed someone not yet credited.
> Git version:

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