linux-kernel - Re: [PATCH v7 1/2] rust: mm: add abstractions for mm_struct and vm_area

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Message-ID: <CANiq72n8oKnAWVj71uus8FuYEqqi+Bvy2zJ4SP=DX9Cgd39UKg@mail.gmail.com>
Date: Mon, 14 Oct 2024 12:46:44 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Alice Ryhl <aliceryhl@...gle.com>
Cc: Miguel Ojeda <ojeda@...nel.org>, Matthew Wilcox <willy@...radead.org>, 
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, Vlastimil Babka <vbabka@...e.cz>, 
	John Hubbard <jhubbard@...dia.com>, "Liam R. Howlett" <Liam.Howlett@...cle.com>, 
	Andrew Morton <akpm@...ux-foundation.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Arnd Bergmann <arnd@...db.de>, Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng <boqun.feng@...il.com>, 
	Gary Guo <gary@...yguo.net>, Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Benno Lossin <benno.lossin@...ton.me>, linux-kernel@...r.kernel.org, linux-mm@...ck.org, 
	rust-for-linux@...r.kernel.org, Andreas Hindborg <a.hindborg@...nel.org>, 
	Wedson Almeida Filho <wedsonaf@...il.com>
Subject: Re: [PATCH v7 1/2] rust: mm: add abstractions for mm_struct and vm_area_struct

On Mon, Oct 14, 2024 at 11:30 AM Alice Ryhl <aliceryhl@...gle.com> wrote:
>
> +/// #[repr(transparent)]

Line in docs.

> +/// #[repr(transparent)]
> +#[repr(transparent)]

Ditto here, but in this case also outside the docs.

Some trivial nits I noticed below since I am here.

> +    /// during the lifetime 'a.

Backticks (some other instances on lifetimes too).

> +    /// Calls `mmget_not_zero` and returns a handle if it succeeds.

I would add `bindings::` since otherwise it may be confusing to say
the C name without qualifying, since this function is also called the
same way.

> +        // SAFETY: The pointer is valid since self is a reference.

`self`.

> +// Make all VmAreaRef methods available on VmAreaMut.
> +// Make all VmAreaMut methods available on VmAreaNew.

Backticks.

> +    /// Can contain "struct page" and pure PFN pages.
> +    /// MADV_HUGEPAGE marked this vma.

These are copied from C, so it is fine, but we may want to take the
chance to format them.

Cheers,
Miguel