From: Matthew Wilcox <willy@infradead.org>
To: Alice Ryhl <aliceryhl@google.com>
Cc: "Miguel Ojeda" <ojeda@kernel.org>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Wedson Almeida Filho" <wedsonaf@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@samsung.com>,
"Kees Cook" <keescook@chromium.org>,
"Al Viro" <viro@zeniv.linux.org.uk>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Arve Hjønnevåg" <arve@android.com>,
"Todd Kjos" <tkjos@android.com>,
"Martijn Coenen" <maco@android.com>,
"Joel Fernandes" <joel@joelfernandes.org>,
"Carlos Llamas" <cmllamas@google.com>,
"Suren Baghdasaryan" <surenb@google.com>,
"Arnd Bergmann" <arnd@arndb.de>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
rust-for-linux@vger.kernel.org,
"Christian Brauner" <brauner@kernel.org>
Subject: Re: [PATCH v2 4/4] rust: add abstraction for `struct page`
Date: Tue, 27 Feb 2024 15:37:11 +0000 [thread overview]
Message-ID: <Zd4Bp6ohjb7H9poA@casper.infradead.org> (raw)
In-Reply-To: <20240208-alice-mm-v2-4-d821250204a6@google.com>
On Thu, Feb 08, 2024 at 03:47:54PM +0000, Alice Ryhl wrote:
> +impl Page {
> + /// Allocates a new page.
> + pub fn new() -> Result<Self, AllocError> {
> + // SAFETY: These are the correct arguments to allocate a single page.
> + let page = unsafe {
> + bindings::alloc_pages(
> + bindings::GFP_KERNEL | bindings::__GFP_ZERO | bindings::__GFP_HIGHMEM,
I thought I raised this last time, but this is over-specialised for
Binder's purposes. Many places that want to allocate a page want
different GFP flags from this; they shouldn't even be the default flags.
So either what you're defining here is a BinderPage, or new() needs
to take GFP flags.
next prev parent reply other threads:[~2024-02-27 15:37 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-08 15:47 [PATCH v2 0/4] Memory management patches needed by Rust Binder Alice Ryhl
2024-02-08 15:47 ` [PATCH v2 1/4] rust: uaccess: add userspace pointers Alice Ryhl
2024-02-08 22:54 ` Valentin Obst
2024-02-09 11:15 ` Alice Ryhl
2024-02-21 11:47 ` Alice Ryhl
2024-02-27 10:05 ` Carlos López
2024-02-27 13:12 ` Alice Ryhl
2024-02-08 15:47 ` [PATCH v2 2/4] uaccess: always export _copy_[from|to]_user with CONFIG_RUST Alice Ryhl
2024-02-08 22:56 ` Valentin Obst
2024-02-09 14:41 ` Arnd Bergmann
2024-02-09 16:45 ` Valentin Obst
2024-02-10 0:15 ` Kees Cook
2024-02-10 11:07 ` Arnd Bergmann
2024-02-14 10:51 ` Alice Ryhl
2024-02-08 15:47 ` [PATCH v2 3/4] rust: uaccess: add typed accessors for userspace pointers Alice Ryhl
2024-02-08 22:57 ` Valentin Obst
2024-02-09 10:40 ` Alice Ryhl
2024-02-09 17:18 ` Valentin Obst
2024-02-08 15:47 ` [PATCH v2 4/4] rust: add abstraction for `struct page` Alice Ryhl
2024-02-10 4:23 ` Martin Rodriguez Reboredo
2024-02-12 9:36 ` Alice Ryhl
2024-02-12 18:11 ` Martin Rodriguez Reboredo
2024-02-27 8:32 ` Andreas Hindborg
2024-02-27 15:37 ` Matthew Wilcox [this message]
2024-02-27 15:56 ` Alice Ryhl
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