linux-kernel - Re: [PATCH v13 0/4] support large align and nid in Rust allocators

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Message-Id: <DBL1R8JJ38M1.21F7MRUUUX4U4@kernel.org>
Date: Fri, 25 Jul 2025 12:00:07 +0200
From: "Danilo Krummrich" <dakr@...nel.org>
To: "Andrew Morton" <akpm@...ux-foundation.org>
Cc: "Vitaly Wool" <vitaly.wool@...sulko.se>, <linux-mm@...ck.org>,
 <linux-kernel@...r.kernel.org>, "Uladzislau Rezki" <urezki@...il.com>,
 "Alice Ryhl" <aliceryhl@...gle.com>, "Vlastimil Babka" <vbabka@...e.cz>,
 <rust-for-linux@...r.kernel.org>, "Lorenzo Stoakes"
 <lorenzo.stoakes@...cle.com>, "Liam R . Howlett" <Liam.Howlett@...cle.com>,
 "Kent Overstreet" <kent.overstreet@...ux.dev>,
 <linux-bcachefs@...r.kernel.org>, <bpf@...r.kernel.org>, "Herbert Xu"
 <herbert@...dor.apana.org.au>, "Jann Horn" <jannh@...gle.com>, "Pedro
 Falcato" <pfalcato@...e.de>, "Hui Zhu" <hui.zhu@...ux.dev>
Subject: Re: [PATCH v13 0/4] support large align and nid in Rust allocators

(Cc: Hui)

On Thu Jul 24, 2025 at 10:54 PM CEST, Andrew Morton wrote:
> On Tue, 15 Jul 2025 15:56:45 +0200 Vitaly Wool <vitaly.wool@...sulko.se> wrote:
>
>> The coming patches provide the ability for Rust allocators to set
>> NUMA node and large alignment.
>> 
>> ...
>>
>>  fs/bcachefs/darray.c           |    2 -
>>  fs/bcachefs/util.h             |    2 -
>>  include/linux/bpfptr.h         |    2 -
>>  include/linux/slab.h           |   39 ++++++++++++++++++++++---------------
>>  include/linux/vmalloc.h        |   12 ++++++++---
>>  lib/rhashtable.c               |    4 +--
>>  mm/nommu.c                     |    3 +-
>>  mm/slub.c                      |   64 +++++++++++++++++++++++++++++++++++++++++--------------------
>>  mm/vmalloc.c                   |   29 ++++++++++++++++++++++-----
>>  rust/helpers/slab.c            |   10 +++++----
>>  rust/helpers/vmalloc.c         |    5 ++--
>>  rust/kernel/alloc.rs           |   54 ++++++++++++++++++++++++++++++++++++++++++++++-----
>>  rust/kernel/alloc/allocator.rs |   49 +++++++++++++++++++++-------------------------
>>  rust/kernel/alloc/kbox.rs      |    4 +--
>>  rust/kernel/alloc/kvec.rs      |   11 ++++++++--
>>  15 files changed, 200 insertions(+), 90 deletions(-)
>
> I assume we're looking for a merge into mm.git?

Yes, I think that's what we agreed in v1 -- the bits I maintain should carry my
Acked-by already.

> We're at -rc7 so let's target 6.17.  Please resend around the end of
> the upcoming merge window?

Yes, this is too late for this cycle. Given that we target the next one, there's
a patch in my queue [1] that interacts with this series.

It would be good if you could pick up [1] (once ready) after this series lands.
I asked Hui to rebase onto this series and Cc you for subsequent submissions for
this purpose.

[1] https://lore.kernel.org/lkml/da9b2afca02124ec14fc9ac7f2a2a85e5be96bc7.1753423953.git.zhuhui@kylinos.cn/