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Wed, 06 Dec 2023 18:45:51 -0800 (PST) Date: Thu, 7 Dec 2023 11:45:43 +0900 From: Hyeonggon Yoo <42.hyeyoo@gmail.com> 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 , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, cgroups@vger.kernel.org, linux-hardening@vger.kernel.org, Michal Hocko Subject: Re: [PATCH v2 00/21] remove the SLAB allocator Message-ID: References: <20231120-slab-remove-slab-v2-0-9c9c70177183@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231120-slab-remove-slab-v2-0-9c9c70177183@suse.cz> X-Rspam-User: X-Stat-Signature: rs1xxm4uuo8dpeizqwhfhoprshwgy718 X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: A130C20014 X-HE-Tag: 1701917153-813133 X-HE-Meta: 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 Af57Dj+f 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 <42.hyeyoo@gmail.com> Thanks! > 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: https://git.kernel.org/vbabka/l/slab-remove-slab-v2r1