linux-kernel - Re: [PATCH v3 03/12] rust: xarray: add `contains

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Message-ID: <CAJ-ks9mF5x5mAUcfN6dWN-NWoaE=j-8h0y_F5AM2Pnfn8RcV6g@mail.gmail.com>
Date: Tue, 10 Feb 2026 11:56:25 -0500
From: Tamir Duberstein <tamird@...il.com>
To: Andreas Hindborg <a.hindborg@...nel.org>
Cc: 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>, Alice Ryhl <aliceryhl@...gle.com>, 
	Trevor Gross <tmgross@...ch.edu>, Danilo Krummrich <dakr@...nel.org>, 
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, "Liam R. Howlett" <Liam.Howlett@...cle.com>, 
	Vlastimil Babka <vbabka@...e.cz>, Andrew Morton <akpm@...ux-foundation.org>, 
	Christoph Lameter <cl@...two.org>, David Rientjes <rientjes@...gle.com>, 
	Roman Gushchin <roman.gushchin@...ux.dev>, Harry Yoo <harry.yoo@...cle.com>, 
	Daniel Gomez <da.gomez@...nel.org>, rust-for-linux@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v3 03/12] rust: xarray: add `contains_index` method

On Mon, Feb 9, 2026 at 6:38 AM Andreas Hindborg <a.hindborg@...nel.org> wrote:
>
> Add a convenience method `contains_index` to check whether an element
> exists at a given index in the XArray. This method provides a more
> ergonomic API compared to calling `get` and checking for `Some`.
>
> Signed-off-by: Andreas Hindborg <a.hindborg@...nel.org>

As I said in v1 I'm -1 on this change. As gregkh would say: it's hard
to review a new API without seeing its user.