linux-kernel - Re: [PATCH 00/20] remove the SLAB allocator

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Message-ID: <ZVNXkENBUCipBuCg@tiehlicka>
Date:   Tue, 14 Nov 2023 12:18:40 +0100
From:   Michal Hocko <mhocko@...e.com>
To:     Vlastimil Babka <vbabka@...e.cz>
Cc:     David Rientjes <rientjes@...gle.com>,
        Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Hyeonggon Yoo <42.hyeyoo@...il.com>,
        Roman Gushchin <roman.gushchin@...ux.dev>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
        Andrey Ryabinin <ryabinin.a.a@...il.com>,
        Alexander Potapenko <glider@...gle.com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Marco Elver <elver@...gle.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Shakeel Butt <shakeelb@...gle.com>,
        Muchun Song <muchun.song@...ux.dev>,
        Kees Cook <keescook@...omium.org>, kasan-dev@...glegroups.com,
        cgroups@...r.kernel.org
Subject: Re: [PATCH 00/20] remove the SLAB allocator

On Mon 13-11-23 20:13:41, Vlastimil Babka wrote:
> 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. AFAIK that version hasn't been
> announced yet, but assuming it would be 6.7, we can aim for 6.8 and
> start exposing the removal to linux-next during the 6.7 cycle.

Makes sense to me.
[...]
>  27 files changed, 784 insertions(+), 5122 deletions(-)

This is just too much of a maintenance burden to have a comfort of
multiple low level allocators. So it is good to see it go. Not that I
would have anything against SLAB allocator as such but if we need to
choose SLUB seems like a better choice.

Thanks for all the work!
-- 
Michal Hocko
SUSE Labs