From: "Vlastimil Babka (SUSE)" <vbabka@kernel.org>
To: "Andreas Hindborg" <a.hindborg@kernel.org>,
"Tamir Duberstein" <tamird@kernel.org>,
"Miguel Ojeda" <ojeda@kernel.org>,
"Boqun Feng" <boqun@kernel.org>, "Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <lossin@kernel.org>,
"Alice Ryhl" <aliceryhl@google.com>,
"Trevor Gross" <tmgross@umich.edu>,
"Danilo Krummrich" <dakr@kernel.org>,
"Daniel Almeida" <daniel.almeida@collabora.com>,
"Alexandre Courbot" <acourbot@nvidia.com>,
"Onur Özkan" <work@onurozkan.dev>,
"Matthew Wilcox" <willy@infradead.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Lorenzo Stoakes" <ljs@kernel.org>,
"Liam R. Howlett" <liam@infradead.org>,
"Harry Yoo" <harry@kernel.org>, "Hao Li" <hao.li@linux.dev>,
"Christoph Lameter" <cl@gentwo.org>,
"David Rientjes" <rientjes@google.com>,
"Roman Gushchin" <roman.gushchin@linux.dev>
Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH v5 08/12] rust: mm: add abstractions for allocating from a `sheaf`
Date: Thu, 3 Sep 2026 12:09:16 +0200 [thread overview]
Message-ID: <8a73da1c-0167-4aa5-a62c-4190327685cd@kernel.org> (raw)
In-Reply-To: <20260902-xarray-entry-send-v5-8-d18adae40708@kernel.org>
On 9/2/26 15:26, Andreas Hindborg wrote:
> Add Rust APIs for allocating objects from a `sheaf`.
>
> Introduce a reduced abstraction `KMemCacheInit` for `struct kmem_cache` to
> support management of the `Sheaf`s.
>
> Initialize objects using in-place initialization when objects are allocated
> from a `Sheaf`. This is different from C which tends to do some
> initialization when the cache is filled. This approach is chosen because
> there is no destructor/drop capability in `struct kmem_cache` that can be
> invoked when the cache is dropped.
>
> Cc: Vlastimil Babka <vbabka@suse.cz>
> Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
> Cc: linux-mm@kvack.org
> Assisted-by: LLM
> Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Acked-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Note that currently all caches have sheaves (except CONFIG_SLUB_TINY or
slab_debug enabled), and sheaf_capacity on creation is treated as a minimum,
which the automated sizing calculation can make larger - in case you want to
reflect this detail in some of the description comments.
next prev parent reply other threads:[~2026-09-03 10:09 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-02 13:25 [PATCH v5 00/12] rust: xarray: add entry API with preloading Andreas Hindborg
2026-09-02 13:25 ` [PATCH v5 01/12] rust: xarray: minor formatting fixes Andreas Hindborg
2026-09-02 13:25 ` [PATCH v5 02/12] rust: xarray: add debug format for `StoreError` Andreas Hindborg
2026-09-02 13:25 ` [PATCH v5 03/12] xarray: move xas_result() and xa_zero_to_null() to the header Andreas Hindborg
2026-09-02 13:26 ` [PATCH v5 04/12] rust: xarray: add `XArrayState` Andreas Hindborg
2026-09-02 13:26 ` [PATCH v5 05/12] rust: xarray: simplify `Guard::load` Andreas Hindborg
2026-09-02 13:26 ` [PATCH v5 06/12] rust: xarray: add `find_next` and `find_next_mut` Andreas Hindborg
2026-09-02 13:26 ` [PATCH v5 07/12] rust: xarray: add entry API Andreas Hindborg
2026-09-02 13:26 ` [PATCH v5 08/12] rust: mm: add abstractions for allocating from a `sheaf` Andreas Hindborg
2026-09-03 10:09 ` Vlastimil Babka (SUSE) [this message]
2026-09-02 13:26 ` [PATCH v5 09/12] rust: mm: sheaf: allow use of C initialized static caches Andreas Hindborg
2026-09-03 10:11 ` Vlastimil Babka (SUSE)
2026-09-02 13:26 ` [PATCH v5 10/12] xarray, radix-tree: enable sheaf support for kmem_cache Andreas Hindborg
2026-09-02 13:26 ` [PATCH v5 11/12] rust: xarray: add preload API Andreas Hindborg
2026-09-02 13:26 ` [PATCH v5 12/12] rust: xarray: document `Guard` lock drop semantics Andreas Hindborg
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