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AJvYcCULygnL4rvZjgG1Tf8m1Yvw5Z3yh7+POxaiGONMIzAMNM/bThOgEdVeNUtg6QeiSOyMvTs/SR0JpgaDNUM=@vger.kernel.org X-Gm-Message-State: AOJu0YyJC1LjcJa2hZe51l1nu9X1exAD01KjylKH4u67CMjBmrif5XKG 1wAQCD/KoZ0ykS/8HAKkvWLp3e+9Igfw29rI43UsF5HLbIPp2QHiRU8RM6mxRRiK1cLKS6ink64 Ctra4kEYBiBnLoVXHYA== X-Received: from wmsl22.prod.google.com ([2002:a05:600c:1d16:b0:480:4a03:7b72]) (user=aliceryhl job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:5309:b0:480:6999:27ec with SMTP id 5b1f17b1804b1-4830e940607mr67827665e9.13.1770279650037; Thu, 05 Feb 2026 00:20:50 -0800 (PST) Date: Thu, 5 Feb 2026 08:20:48 +0000 In-Reply-To: <20260205050128.17532-1-jongan.kim@lge.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260205050128.17532-1-jongan.kim@lge.com> Message-ID: Subject: Re: [PATCH v3 3/3] rust_binder: handle PID namespace conversion for freeze operation From: Alice Ryhl To: jongan.kim@lge.com Cc: a.hindborg@kernel.org, arve@android.com, bjorn3_gh@protonmail.com, boqun.feng@gmail.com, brauner@kernel.org, cmllamas@google.com, dakr@kernel.org, daniel.almeida@collabora.com, gary@garyguo.net, gregkh@linuxfoundation.org, heesu0025.kim@lge.com, ht.hong@lge.com, jungsu.hwang@lge.com, kernel-team@android.com, linux-kernel@vger.kernel.org, lossin@kernel.org, ojeda@kernel.org, rust-for-linux@vger.kernel.org, sanghun.lee@lge.com, seulgi.lee@lge.com, sunghoon.kim@lge.com, tamird@gmail.com, tkjos@android.com, tmgross@umich.edu, viresh.kumar@linaro.org, vitaly.wool@konsulko.se, yury.norov@gmail.com Content-Type: text/plain; charset="utf-8" On Thu, Feb 05, 2026 at 02:01:28PM +0900, jongan.kim@lge.com wrote: > On Wed, Feb 04 2026 10:50:31AM +0000, Alice Ryhl wrote: > > On Wed, Feb 04, 2026 at 06:11:47PM +0900, jongan.kim@lge.com wrote: > > > 3. Regarding the search mechanism and vec efficiency improvements you > > > mentioned, these seem like valuable optimizations but would represent > > > a broader architectural change to the binder driver. > > > > Improving get_procs_with_pid() seems like a separate thing. Perhaps it > > could be part of this other series: > > https://lore.kernel.org/all/20260201000817.275382-1-shivamklr@cock.li/ > > > > Improving it here should only happen if you need to rewrite said > > function *anyway*. > > Since we're changing the implementation to use task-based comparison instead > of PID-based comparison, we won't be using get_procs_with_pid() anymore and > will need to write a new function (e.g., get_procs_with_task()). > > Would this approach align with the Rust binder development direction? Replacing get_procs_with_pid() with a new get_procs_with_task() sounds reasonable to me. Alice