linux-kernel - Re: [PATCH v3 4/4] rust: binder: shrink all

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Message-ID: <5dc113c1-c9c4-4420-832d-65681414cee2@cock.li>
Date: Tue, 10 Feb 2026 17:17:02 +0530
From: Shivam Kalra <shivamklr@...k.li>
To: Alice Ryhl <aliceryhl@...gle.com>
Cc: Danilo Krummrich <dakr@...nel.org>,
 Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
 Vlastimil Babka <vbabka@...e.cz>, "Liam R. Howlett"
 <Liam.Howlett@...cle.com>, Uladzislau Rezki <urezki@...il.com>,
 Miguel Ojeda <ojeda@...nel.org>, Boqun Feng <boqun.feng@...il.com>,
 Gary Guo <gary@...yguo.net>, Björn Roy Baron
 <bjorn3_gh@...tonmail.com>, Benno Lossin <lossin@...nel.org>,
 Andreas Hindborg <a.hindborg@...nel.org>, Trevor Gross <tmgross@...ch.edu>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Arve Hjønnevåg <arve@...roid.com>,
 Todd Kjos <tkjos@...roid.com>, Christian Brauner <brauner@...nel.org>,
 Carlos Llamas <cmllamas@...gle.com>, rust-for-linux@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 4/4] rust: binder: shrink all_procs when deregistering
 processes

On 09/02/26 19:24, Alice Ryhl wrote:
> 
> Hmm. This way we need to reallocate immediately if one more process is
> added. How about:
> 
> if len < cap / 4 {
>     shrink_to(cap / 2);
> }
> 
> Alice
Good point, that avoids the shrink-then-immediately-regrow pattern.
Will adopt this for v4.