linux-kernel - Re: [PATCH 3/3] rust: xarray: add `insert` and `reserve`

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Message-ID: <CAH5fLgjmUXUcXFFYdrM4f2iZeD-JbEuSV1DuFbGERNQNM+V51w@mail.gmail.com>
Date: Sun, 6 Jul 2025 10:31:59 +0200
From: Alice Ryhl <aliceryhl@...gle.com>
To: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc: Tamir Duberstein <tamird@...il.com>, Andreas Hindborg <a.hindborg@...nel.org>, 
	Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Benno Lossin <lossin@...nel.org>, Trevor Gross <tmgross@...ch.edu>, 
	Danilo Krummrich <dakr@...nel.org>, Matthew Wilcox <willy@...radead.org>, 
	Andrew Morton <akpm@...ux-foundation.org>, rust-for-linux@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
	linux-mm@...ck.org, Daniel Almeida <daniel.almeida@...labora.com>
Subject: Re: [PATCH 3/3] rust: xarray: add `insert` and `reserve`

On Tue, Jul 1, 2025 at 6:56 PM Miguel Ojeda
<miguel.ojeda.sandonis@...il.com> wrote:
>
> On Tue, Jul 1, 2025 at 6:27 PM Tamir Duberstein <tamird@...il.com> wrote:
> >
> > Add `Guard::{insert,reserve}` and `Guard::{insert,reserve}_limit`, which
> > are akin to `__xa_{alloc,insert}` in C.
>
> Who will be using this? i.e. we need to justify adding code, typically
> by mentioning the users.

Rust Binder does have a user for `reserve`. As for xa_alloc, Rust
Binder may end up using it, but the current plan is to use Burak's
bitmap work instead.

Alice