From: Danilo Krummrich <dakr@kernel.org>
To: Tamir Duberstein <tamird@gmail.com>
Cc: "Andrew Ballance" <andrewjballance@gmail.com>,
"Alice Ryhl" <aliceryhl@google.com>,
"Miguel Ojeda" <ojeda@kernel.org>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <benno.lossin@proton.me>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Trevor Gross" <tmgross@umich.edu>,
rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] rust: alloc: add `Vec::dec_len`
Date: Mon, 17 Mar 2025 12:22:31 +0100 [thread overview]
Message-ID: <Z9gF90wPSZTRQfRR@pollux> (raw)
In-Reply-To: <CAJ-ks9mJYyJK7iQz+qS2TnwNgTqp3rRWGTv6hiPhJ3v6aWsLng@mail.gmail.com>
On Sun, Mar 16, 2025 at 07:27:22PM -0400, Tamir Duberstein wrote:
>
> Does this suit?
I think for dec_ref() it is not the safety requrement that justifies the
invariant.
I think it should be something along the lines of:
// INVARIANT: We drop ownership for all elements within the range
// `[self.len - count, self.len]`, hence the updated value of `set.len`
// represents the exact number of elements stored within `self`.
>
> > // INVARIANT: By the safety requirements of this method `self.len - count` represents the
> > // exact number of elements stored within `self`.
Please do not use the email quote mechanism for code snippets, it's confusing
for readers to figure out by whom it has been written.
next prev parent reply other threads:[~2025-03-17 11:22 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-16 22:31 [PATCH 0/2] rust: alloc: split `Vec::set_len` into `Vec::{inc,dec}_len` Tamir Duberstein
2025-03-16 22:32 ` [PATCH 1/2] rust: alloc: replace `Vec::set_len` with `inc_len` Tamir Duberstein
2025-03-17 9:58 ` Benno Lossin
2025-03-17 10:23 ` Miguel Ojeda
2025-03-17 14:43 ` Benno Lossin
2025-03-17 10:48 ` Alice Ryhl
2025-03-17 11:25 ` Tamir Duberstein
2025-03-17 14:46 ` Benno Lossin
2025-03-17 15:01 ` Tamir Duberstein
2025-03-17 10:50 ` Alice Ryhl
2025-03-17 11:16 ` Danilo Krummrich
2025-03-17 11:25 ` Tamir Duberstein
2025-03-16 22:32 ` [PATCH 2/2] rust: alloc: add `Vec::dec_len` Tamir Duberstein
2025-03-16 22:35 ` Tamir Duberstein
2025-03-16 22:41 ` Danilo Krummrich
2025-03-16 22:47 ` Tamir Duberstein
2025-03-16 23:02 ` Danilo Krummrich
2025-03-16 23:27 ` Tamir Duberstein
2025-03-17 11:22 ` Danilo Krummrich [this message]
2025-03-17 11:34 ` Tamir Duberstein
2025-03-17 10:04 ` Benno Lossin
2025-03-17 11:34 ` Tamir Duberstein
2025-03-17 11:47 ` Alice Ryhl
2025-03-17 12:59 ` Alice Ryhl
2025-03-17 13:53 ` Tamir Duberstein
2025-03-18 9:30 ` Alice Ryhl
2025-03-18 14:12 ` Tamir Duberstein
2025-03-18 14:44 ` Alice Ryhl
2025-03-18 18:28 ` Tamir Duberstein
2025-03-18 18:46 ` Danilo Krummrich
2025-03-18 18:53 ` Tamir Duberstein
2025-03-18 19:26 ` Danilo Krummrich
2025-03-18 20:05 ` Tamir Duberstein
2025-03-18 20:13 ` Tamir Duberstein
2025-03-18 20:15 ` Danilo Krummrich
2025-03-17 14:42 ` Benno Lossin
2025-03-17 14:44 ` Tamir Duberstein
2025-03-17 16:16 ` Danilo Krummrich
2025-03-17 16:21 ` Tamir Duberstein
2025-03-17 14:39 ` Benno Lossin
2025-03-17 15:37 ` Tamir Duberstein
2025-03-17 15:57 ` Miguel Ojeda
2025-03-17 17:24 ` Benno Lossin
2025-03-17 17:28 ` Tamir Duberstein
2025-03-19 21:05 ` kernel test robot
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