From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f74.google.com (mail-wm1-f74.google.com [209.85.128.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 222C522FE0E for ; Mon, 16 Feb 2026 08:45:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771231522; cv=none; b=eqO5LxTanMXMY+n0MltcR9cYFIdeXf5iuPX3WBE4Ab/qxJ6aQTgWSIjZnBPdniD7dXTXHVW9NgxmD1ikLuRS19kA9HkQOQ3iSj9T3tZOJiW0Y9s3Y3y9/+GqCHLR1NVBRP7pu52vsJHq9fxY10UyUSm0B14kxD8347Jui8Vhx8A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771231522; c=relaxed/simple; bh=OuhvQPJfa2dU+b6ky9kEGtjO7h9w+NBDs0R5fcUWa9U=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=Ag1Cg4K61aOOxa9Y3/pI1BvZS+l5GlBYYZYG4Zpw1WA6ViXLC+RtSg9fD6kLClL4nniaFJu5zJ7/B9DBQ66ZD/TtWlK5ufjAZwc91Z9JLmZ9gcv+3Y+EYOy0Iuqo4rhX99WsF3lvG6DdMKojPAQ9eIzF/FJQEe7ZrPt/ZD/CoJg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--aliceryhl.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=nrKWUdDU; arc=none smtp.client-ip=209.85.128.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--aliceryhl.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="nrKWUdDU" Received: by mail-wm1-f74.google.com with SMTP id 5b1f17b1804b1-483101623e9so26003745e9.3 for ; Mon, 16 Feb 2026 00:45:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1771231519; x=1771836319; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=+WW9q6QHOftoZklmKwTwtVIYnoU0bbW26zbJNX1Oa7s=; b=nrKWUdDUDtODtP8mzv6xYfThCGK5wrn3VzpeXlkI39NDmzeZDANz65jW9gT7p1auCh 2vkCD4OLNz+Xprk+KYkWoK1M/EWhERWpeKcAVZGFz1BcuEuGgPSB0VhtrX3RJDIe5oez pNH7ulelfJoz3ln6AqS+M7esKjRTjQW9zYOeYEIy4wKVSJA9LPJUEco3zjwRddIpvzZM YjqdhHiXMbRrBPgjhC3qGVJjcG3yMRIFlfyoPIEi0JSpFnPvAHl2Wk3+TG4AZ1igyjXr k+XKc0aeyN/KaxTYRSNmKFPaKjA8/Gq7wb1ptqAmJdDQiFHgyhSrb7nH1C/T0PqemUnh 8WMA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1771231519; x=1771836319; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=+WW9q6QHOftoZklmKwTwtVIYnoU0bbW26zbJNX1Oa7s=; b=U6mi7JwmaeymTarKIRgJKDBp7+m/fZOkoilL6I8Vhgh22PIgN+z/0lPVFG72Zut4fU PEYfN4rKC5EzEoBzwnZ4hNgtj4KTGdEzHLFssRHwurrf0T0vYl4CVAHPTSQpUYctKoIe 3yQDv5VvUxSYaBT1d7qQ0K1wzjp+0V3zTbRvryC463Xswdt7nnNQcz5fKy0RfpcQNcAr ouxq6xvZX5tI9cfsZjmCyi5s2T1Ufb3mwnc8FICaF0uifUKA6rSgvXSAvcFwkSPa/X1w i4+RR0BosvPY2YtHC1iFF4ccnjt4Q2V9uQYXYITmzDaoxAQJ2gJkAfcztjhUgc+t8LGb SbUQ== X-Forwarded-Encrypted: i=1; AJvYcCWjGAret1tyWy+U86k+tj3wrB/90jiqgK7bnJ/OCfmKvAFJv/IljnGcD5IYYKFcfz2K20lu0WxYP5I8v2A=@vger.kernel.org X-Gm-Message-State: AOJu0YyVVXmRWn09RmgxiJ4jo5EktNpz96OUr7OdTqRqN9CS3KdK4LH0 vyPMFvmKW1Qzc4NTY23H4/Uxfa6QPYW1RS2jnDDIZqmfXO/9ExmhQCO+f5YAFtbhMx5CV8dlHl6 pQ0eqPkh1NR2CrT/aVw== X-Received: from wmph40.prod.google.com ([2002:a05:600c:49a8:b0:480:2051:60e1]) (user=aliceryhl job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:5299:b0:480:19ed:7efa with SMTP id 5b1f17b1804b1-48373a7a0dfmr128425625e9.36.1771231519316; Mon, 16 Feb 2026 00:45:19 -0800 (PST) Date: Mon, 16 Feb 2026 08:45:18 +0000 In-Reply-To: <20260215-binder-shrink-vec-v3-v5-0-6e5e56d69766@zohomail.in> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260215-binder-shrink-vec-v3-v5-0-6e5e56d69766@zohomail.in> Message-ID: Subject: Re: [PATCH v5 0/3] rust: alloc: add KVVec shrinking method From: Alice Ryhl To: shivamkalra98@zohomail.in Cc: Danilo Krummrich , Lorenzo Stoakes , Vlastimil Babka , "Liam R. Howlett" , Uladzislau Rezki , Miguel Ojeda , Boqun Feng , Gary Guo , "=?utf-8?B?QmrDtnJu?= Roy Baron" , Benno Lossin , Andreas Hindborg , Trevor Gross , Greg Kroah-Hartman , "Arve =?utf-8?B?SGrDuG5uZXbDpWc=?=" , Todd Kjos , Christian Brauner , Carlos Llamas , rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" On Sun, Feb 15, 2026 at 02:05:20AM +0530, Shivam Kalra via B4 Relay wrote: > This series adds a shrink_to() method to KVVec to allow explicit > capacity reduction for memory reclamation. > > Problem: > When elements are removed from a KVVec, the allocated capacity is not > reduced. The underlying C allocators (krealloc/kvrealloc) don't shrink > memory in-place. This can cause significant memory waste in scenarios > with variable workloads. Overall looks good to me! Reviewed-by: Alice Ryhl