From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f46.google.com (mail-oa1-f46.google.com [209.85.160.46]) (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 1152DDDC8 for ; Wed, 12 Jul 2023 20:46:30 +0000 (UTC) Received: by mail-oa1-f46.google.com with SMTP id 586e51a60fabf-1b00b0ab0daso5913609fac.0 for ; Wed, 12 Jul 2023 13:46:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1689194790; x=1691786790; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=hjYp/GGGt1suSt9XKydx09ugNwhwrtHkiMgpJkM/lOc=; b=ncfNislj9zkZDbzfooNQKCoi3fZ/tNoj/jW86RpRgvnL/xWidIpWcLH6ayF7AetyXO qAHUWsEqwvY/NGG3fsTp3T5S1FjT/PNbxOToVwEQ82BTZcQAerhxx85WCv+6o+sVl5oF XmOVP70uv/1ZWlrvgrOlOXDPHUprmR+TjTvWD8V9/i5t9gafRdk/jZI6bg0k1+FuwnIr KDe5lzQr+yOdL9AFvjfJwOFbG9AxD/BxnV7lqt9o4cpBP1ytub13wm+8xwY46e7QiBIF FJcf4gGhW5HVpz9WAXW8y74oeWD0SGnqtQNxrrbAWkLXZPuzgApTeQiyIVeFFzaghT2V I36Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689194790; x=1691786790; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=hjYp/GGGt1suSt9XKydx09ugNwhwrtHkiMgpJkM/lOc=; b=GXfMwzNwdclpNIPsq0FEXmvZVmUaUZTUNrm3Y+sn0oAz4WwBzX8/JWLQLgjMXquu0G YifG6MjFSzAkrenDcQB2yGsYMDw3bMitAgO7RXfVDytRVcq3Z0Axzg9/mp2txYtkW5k2 yH208qgiAvFp00cPT1X2s/R5B+2tP6K4rUTVs5BsRGNEqRdhAk2Bd8M1gOz2o8q9dfTp Ukab+yOxqRu59zklHZbnWVz2BpZzi2uQDjkmWR9X5UUor+bi7mVN9hjIN+moSLwfQ0LN euB05kAIesIMmCYim7ltw3WVhjbxPVTi9EVzB82nnTI1sr6DaaJTt8F+0M7hBrJF5Pn5 95wg== X-Gm-Message-State: ABy/qLaaQLZoyQwJInEs2oIOr29dUXUmOcLUDQVU0FOgAiEnM25FYY44 qD0B+JloSH3cBanxoOO00Qk= X-Google-Smtp-Source: APBJJlGB8IZyS5AEyRlG5pMJgxfMJIQfz18Bl/ywWLjb12fdCb0ahZIw7N3RXMtz/5OOeQxQTXct2g== X-Received: by 2002:a05:6870:e313:b0:1b7:8950:f583 with SMTP id z19-20020a056870e31300b001b78950f583mr297915oad.33.1689194789797; Wed, 12 Jul 2023 13:46:29 -0700 (PDT) Received: from [192.168.54.90] (static.220.238.itcsa.net. [190.15.220.238]) by smtp.gmail.com with ESMTPSA id ds53-20020a0568705b3500b001a6d15fc52fsm2397384oab.4.2023.07.12.13.46.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 12 Jul 2023 13:46:29 -0700 (PDT) Message-ID: <4b92e8be-32c8-0ac4-723f-59f2fc42e6b3@gmail.com> Date: Wed, 12 Jul 2023 17:33:12 -0300 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Subject: Re: [PATCH v3 2/9] rust: sync: add `Arc::{from_raw, into_raw}` Content-Language: en-US To: Alice Ryhl , rust-for-linux@vger.kernel.org, Tejun Heo , Miguel Ojeda Cc: Lai Jiangshan , Wedson Almeida Filho , Alex Gaynor , Boqun Feng , Gary Guo , =?UTF-8?Q?Bj=c3=b6rn_Roy_Baron?= , Benno Lossin , linux-kernel@vger.kernel.org, patches@lists.linux.dev, Wedson Almeida Filho References: <20230711093303.1433770-1-aliceryhl@google.com> <20230711093303.1433770-3-aliceryhl@google.com> From: Martin Rodriguez Reboredo In-Reply-To: <20230711093303.1433770-3-aliceryhl@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 7/11/23 06:32, Alice Ryhl wrote: > From: Wedson Almeida Filho > > These methods can be used to turn an `Arc` into a raw pointer and back, > in a way that preserves the metadata for fat pointers. > > This is done using the unstable ptr_metadata feature [1]. However, it > could also be done using the unstable pointer_byte_offsets feature [2], > which is likely to have a shorter path to stabilization than > ptr_metadata. > > Link: https://github.com/rust-lang/rust/issues/81513 [1] > Link: https://github.com/rust-lang/rust/issues/96283 [2] > Signed-off-by: Wedson Almeida Filho > Co-developed-by: Alice Ryhl > Signed-off-by: Alice Ryhl > Reviewed-by: Gary Guo > --- > [...] Reviewed-by: Martin Rodriguez Reboredo